[{"department":[{"_id":"58"}],"user_id":"37144","_id":"48626","publication_date":"03.08.2023","type":"patent","status":"public","abstract":[{"text":"Die Erfindung betrifft einen elektrooptischen Mischer (1) mit elektrischem Ausgang, aufweisend:\r\n• eine Photodiode (PD),\r\n• einen ersten Anschluss,\r\n• einen zweiten Anschluss,\r\n• wobei die Anschlüsse eine erste Spannungsversorgung (V1) und eine zweite Spannungsversorgung (V2) oder eine erste Stromversorgung (I1) und eine zweite Stromversorgung (I2) anschließbar ist,\r\n• einen Anschluss für ein Kleinsignal-Massepotential,\r\n• ein erstes Teilanpassungsnetzwerk (Z2, Z4), welches auf der Anodenseite der Photodiode (PD) angeordnet ist, wobei ein Teil des ersten Teilanpassungsnetzwerkes (Z2) mit dem Anschluss für die zweite Spannungsversorgung (V2) schaltbar (S2) verbindbar ist, und wobei ein anderer Teil des ersten Teilanpassungsnetzwerkes (Z4) mit dem Anschluss für das Kleinsignal-Massepotential schaltbar (S2') verbindbar ist,\r\n• ein zweites Teilanpassungsnetzwerk (Z1, Z3), welches auf der Kathodenseite der Photodiode (PD) angeordnet ist, wobei ein Teil des zweiten Teilanpassungsnetzwerkes (Z1) mit dem Anschluss für die erste Spannungsversorgung (V1) schaltbar (S1) verbindbar ist, und wobei ein anderer Teil des zweiten Teilanpassungsnetzwerkes (Z3) mit dem Anschluss für das Kleinsignal-Massepotential schaltbar (S1') verbindbar ist,\r\n• ein erstes entkoppelndes Element (C1) angeordnet auf der Kathodenseite und ein zweites entkoppelndes Element (C2) angeordnet auf der Anodenseite der Photodiode (PD),\r\n• wobei zwischen den von der Photodiode (PD) abgewandten Seiten des ersten entkoppelnden Elementes (C1) und des zweiten entkoppelnden Elementes (C2) im Betrieb einelektrisches Ausgangssignal bereitgestellt werden kann.","lang":"ger"}],"author":[{"last_name":"Kruse","id":"38254","full_name":"Kruse, Stephan","first_name":"Stephan"},{"last_name":"Scheytt","orcid":"0000-0002-5950-6618 ","full_name":"Scheytt, J. Christoph","id":"37144","first_name":"J. Christoph"}],"date_created":"2023-11-06T10:29:41Z","ipc":"H03F 3/08 (2006.01), H03F 3/45 (2006.01), H03F 1/34 (2006.01), H04B 10/00 (2013.01)","date_updated":"2025-02-10T13:15:50Z","title":"Elektrooptischer Mischer","ipn":"DE102022201070A1","citation":{"chicago":"Kruse, Stephan, and J. Christoph Scheytt. “Elektrooptischer Mischer,” 2023.","ieee":"S. Kruse and J. C. Scheytt, “Elektrooptischer Mischer.” 2023.","ama":"Kruse S, Scheytt JC. Elektrooptischer Mischer. Published online 2023.","short":"S. Kruse, J.C. Scheytt, (2023).","mla":"Kruse, Stephan, and J. Christoph Scheytt. Elektrooptischer Mischer. 2023.","bibtex":"@article{Kruse_Scheytt_2023, title={Elektrooptischer Mischer}, author={Kruse, Stephan and Scheytt, J. Christoph}, year={2023} }","apa":"Kruse, S., & Scheytt, J. C. (2023). Elektrooptischer Mischer."},"year":"2023"},{"year":"2023","citation":{"short":"V. Surendranath Shroff, C. Kress, M. Bahmanian, J.C. Scheytt, in: 2023 PhotonIcs & Electromagnetics Research Symposium (PIERS), , IEEE, 2023.","mla":"Surendranath Shroff, Vijayalakshmi, et al. “Analysis of Phase Noise in Waveguide-Integrated Optical Test Structures in Silicon Photonics.” 2023 PhotonIcs & Electromagnetics Research Symposium (PIERS), , IEEE, 2023, doi:10.1109/PIERS59004.2023.10221473.","bibtex":"@inproceedings{Surendranath Shroff_Kress_Bahmanian_Scheytt_2023, title={Analysis of Phase Noise in Waveguide-integrated Optical Test Structures in Silicon Photonics}, DOI={10.1109/PIERS59004.2023.10221473}, booktitle={2023 PhotonIcs & Electromagnetics Research Symposium (PIERS), }, publisher={IEEE}, author={Surendranath Shroff, Vijayalakshmi and Kress, Christian and Bahmanian, Meysam and Scheytt, J. Christoph}, year={2023} }","apa":"Surendranath Shroff, V., Kress, C., Bahmanian, M., & Scheytt, J. C. (2023). Analysis of Phase Noise in Waveguide-integrated Optical Test Structures in Silicon Photonics. 2023 PhotonIcs & Electromagnetics Research Symposium (PIERS), . 2023 PhotonIcs & Electromagnetics Research Symposium (PIERS), Prague, Czech Republic. https://doi.org/10.1109/PIERS59004.2023.10221473","ama":"Surendranath Shroff V, Kress C, Bahmanian M, Scheytt JC. Analysis of Phase Noise in Waveguide-integrated Optical Test Structures in Silicon Photonics. In: 2023 PhotonIcs & Electromagnetics Research Symposium (PIERS), . IEEE; 2023. doi:10.1109/PIERS59004.2023.10221473","ieee":"V. Surendranath Shroff, C. Kress, M. Bahmanian, and J. C. Scheytt, “Analysis of Phase Noise in Waveguide-integrated Optical Test Structures in Silicon Photonics,” presented at the 2023 PhotonIcs & Electromagnetics Research Symposium (PIERS), Prague, Czech Republic, 2023, doi: 10.1109/PIERS59004.2023.10221473.","chicago":"Surendranath Shroff, Vijayalakshmi, Christian Kress, Meysam Bahmanian, and J. Christoph Scheytt. “Analysis of Phase Noise in Waveguide-Integrated Optical Test Structures in Silicon Photonics.” In 2023 PhotonIcs & Electromagnetics Research Symposium (PIERS), . IEEE, 2023. https://doi.org/10.1109/PIERS59004.2023.10221473."},"publication_status":"published","publication_identifier":{"eisbn":["979-8-3503-1284-3"]},"title":"Analysis of Phase Noise in Waveguide-integrated Optical Test Structures in Silicon Photonics","doi":"10.1109/PIERS59004.2023.10221473","conference":{"start_date":"2023-07-03","name":"2023 PhotonIcs & Electromagnetics Research Symposium (PIERS)","location":"Prague, Czech Republic","end_date":"2023-07-06"},"date_updated":"2025-02-11T10:58:57Z","publisher":"IEEE","date_created":"2023-09-27T11:08:23Z","author":[{"first_name":"Vijayalakshmi","last_name":"Surendranath Shroff","full_name":"Surendranath Shroff, Vijayalakshmi","id":"76626"},{"last_name":"Kress","full_name":"Kress, Christian","id":"13256","first_name":"Christian"},{"full_name":"Bahmanian, Meysam","id":"69233","last_name":"Bahmanian","first_name":"Meysam"},{"full_name":"Scheytt, J. Christoph","id":"37144","orcid":"0000-0002-5950-6618 ","last_name":"Scheytt","first_name":"J. Christoph"}],"abstract":[{"lang":"eng","text":"This paper experimentally investigates and interprets the e®ects of noise and non-\r\nlinearity in a silicon photonic optical test structure. For the analysis di®erent optoelectronic phase\r\nnoise measurement techniques are used. Our tests focuses on the performance of integrated opti-\r\ncal test structures using femtosecond pulses in the 1550nm spectral range. A primary objective\r\nis to understand the behaviour of silicon photonic waveguides that can be further employed in the\r\nimplementation of an optoelectronic phase-locked loop (OEPLL) in silicon photonics technology.\r\nA comparison of our results, as well as a discussion on the di®erent optoelectronic phase noise\r\nmeasurement techniques are presented. Our ¯ndings provide insights that can be leveraged to\r\noptimize the design and performance of ultra-low phase noise on-chip OEPLL systems locking\r\nto mode-locked laser (MLL) signals. In the future such systems can be essential for advanced\r\ncommunication and sensing applications."}],"status":"public","type":"conference","publication":"2023 PhotonIcs & Electromagnetics Research Symposium (PIERS), ","language":[{"iso":"eng"}],"_id":"47521","user_id":"76626","department":[{"_id":"58"},{"_id":"230"}]},{"abstract":[{"lang":"eng","text":"\tWe propose a general framework to compute the word error rate (WER) of ASR systems that process recordings containing multiple speakers at their input and that produce multiple output word sequences (MIMO).\r\n\tSuch ASR systems are typically required, e.g., for meeting transcription.\r\n\tWe provide an efficient implementation based on a dynamic programming search in a multi-dimensional Levenshtein distance tensor under the constraint that a reference utterance must be matched consistently with one hypothesis output. \r\n\tThis also results in an efficient implementation of the ORC WER which previously suffered from exponential complexity.\r\n\tWe give an overview of commonly used WER definitions for multi-speaker scenarios and show that they are specializations of the above MIMO WER tuned to particular application scenarios. \r\n\tWe conclude with a discussion of the pros and cons of the various WER definitions and a recommendation when to use which."}],"file":[{"relation":"main_file","content_type":"application/pdf","file_size":204994,"file_id":"48282","file_name":"ICASSP_2023_Meeting_Evaluation.pdf","access_level":"open_access","date_updated":"2023-10-19T07:41:56Z","date_created":"2023-10-19T07:39:57Z","creator":"tvn"}],"publication":"ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)","keyword":["Word Error Rate","Meeting Recognition","Levenshtein Distance"],"ddc":["000"],"language":[{"iso":"eng"}],"year":"2023","quality_controlled":"1","title":"On Word Error Rate Definitions and Their Efficient Computation for Multi-Speaker Speech Recognition Systems","publisher":"IEEE","date_created":"2023-10-19T07:38:31Z","status":"public","type":"conference","file_date_updated":"2023-10-19T07:41:56Z","_id":"48281","project":[{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"grant_number":"448568305","name":"Automatische Transkription von Gesprächssituationen","_id":"508"}],"department":[{"_id":"54"}],"user_id":"40767","citation":{"apa":"von Neumann, T., Boeddeker, C., Kinoshita, K., Delcroix, M., & Haeb-Umbach, R. (2023). On Word Error Rate Definitions and Their Efficient Computation for Multi-Speaker Speech Recognition Systems. ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). https://doi.org/10.1109/icassp49357.2023.10094784","bibtex":"@inproceedings{von Neumann_Boeddeker_Kinoshita_Delcroix_Haeb-Umbach_2023, title={On Word Error Rate Definitions and Their Efficient Computation for Multi-Speaker Speech Recognition Systems}, DOI={10.1109/icassp49357.2023.10094784}, booktitle={ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)}, publisher={IEEE}, author={von Neumann, Thilo and Boeddeker, Christoph and Kinoshita, Keisuke and Delcroix, Marc and Haeb-Umbach, Reinhold}, year={2023} }","mla":"von Neumann, Thilo, et al. “On Word Error Rate Definitions and Their Efficient Computation for Multi-Speaker Speech Recognition Systems.” ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), IEEE, 2023, doi:10.1109/icassp49357.2023.10094784.","short":"T. von Neumann, C. Boeddeker, K. Kinoshita, M. Delcroix, R. Haeb-Umbach, in: ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), IEEE, 2023.","chicago":"Neumann, Thilo von, Christoph Boeddeker, Keisuke Kinoshita, Marc Delcroix, and Reinhold Haeb-Umbach. “On Word Error Rate Definitions and Their Efficient Computation for Multi-Speaker Speech Recognition Systems.” In ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2023. https://doi.org/10.1109/icassp49357.2023.10094784.","ieee":"T. von Neumann, C. Boeddeker, K. Kinoshita, M. Delcroix, and R. Haeb-Umbach, “On Word Error Rate Definitions and Their Efficient Computation for Multi-Speaker Speech Recognition Systems,” 2023, doi: 10.1109/icassp49357.2023.10094784.","ama":"von Neumann T, Boeddeker C, Kinoshita K, Delcroix M, Haeb-Umbach R. On Word Error Rate Definitions and Their Efficient Computation for Multi-Speaker Speech Recognition Systems. In: ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE; 2023. doi:10.1109/icassp49357.2023.10094784"},"has_accepted_license":"1","publication_status":"published","related_material":{"link":[{"url":"https://github.com/fgnt/meeteval","relation":"software"}]},"doi":"10.1109/icassp49357.2023.10094784","main_file_link":[{"url":"https://ieeexplore.ieee.org/document/10094784"}],"oa":"1","date_updated":"2025-02-12T09:16:34Z","author":[{"orcid":"https://orcid.org/0000-0002-7717-8670","last_name":"von Neumann","id":"49870","full_name":"von Neumann, Thilo","first_name":"Thilo"},{"first_name":"Christoph","last_name":"Boeddeker","id":"40767","full_name":"Boeddeker, Christoph"},{"first_name":"Keisuke","full_name":"Kinoshita, Keisuke","last_name":"Kinoshita"},{"full_name":"Delcroix, Marc","last_name":"Delcroix","first_name":"Marc"},{"full_name":"Haeb-Umbach, Reinhold","id":"242","last_name":"Haeb-Umbach","first_name":"Reinhold"}]},{"status":"public","type":"conference","file_date_updated":"2023-10-19T07:19:59Z","project":[{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"name":"Automatische Transkription von Gesprächssituationen","_id":"508","grant_number":"448568305"}],"_id":"48275","user_id":"40767","department":[{"_id":"54"}],"citation":{"apa":"von Neumann, T., Boeddeker, C., Delcroix, M., & Haeb-Umbach, R. (2023). MeetEval: A Toolkit for Computation of Word Error Rates for Meeting Transcription Systems. Proc. CHiME 2023 Workshop on Speech Processing in Everyday Environments. CHiME 2023 Workshop on Speech Processing in Everyday Environments, Dublin.","mla":"von Neumann, Thilo, et al. “MeetEval: A Toolkit for Computation of Word Error Rates for Meeting Transcription Systems.” Proc. CHiME 2023 Workshop on Speech Processing in Everyday Environments, 2023.","bibtex":"@inproceedings{von Neumann_Boeddeker_Delcroix_Haeb-Umbach_2023, title={MeetEval: A Toolkit for Computation of Word Error Rates for Meeting Transcription Systems}, booktitle={Proc. CHiME 2023 Workshop on Speech Processing in Everyday Environments}, author={von Neumann, Thilo and Boeddeker, Christoph and Delcroix, Marc and Haeb-Umbach, Reinhold}, year={2023} }","short":"T. von Neumann, C. Boeddeker, M. Delcroix, R. Haeb-Umbach, in: Proc. CHiME 2023 Workshop on Speech Processing in Everyday Environments, 2023.","ama":"von Neumann T, Boeddeker C, Delcroix M, Haeb-Umbach R. MeetEval: A Toolkit for Computation of Word Error Rates for Meeting Transcription Systems. In: Proc. CHiME 2023 Workshop on Speech Processing in Everyday Environments. ; 2023.","ieee":"T. von Neumann, C. Boeddeker, M. Delcroix, and R. Haeb-Umbach, “MeetEval: A Toolkit for Computation of Word Error Rates for Meeting Transcription Systems,” presented at the CHiME 2023 Workshop on Speech Processing in Everyday Environments, Dublin, 2023.","chicago":"Neumann, Thilo von, Christoph Boeddeker, Marc Delcroix, and Reinhold Haeb-Umbach. “MeetEval: A Toolkit for Computation of Word Error Rates for Meeting Transcription Systems.” In Proc. CHiME 2023 Workshop on Speech Processing in Everyday Environments, 2023."},"has_accepted_license":"1","related_material":{"link":[{"url":"https://github.com/fgnt/meeteval","relation":"software"}]},"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/2307.11394"}],"conference":{"location":"Dublin","name":"CHiME 2023 Workshop on Speech Processing in Everyday Environments"},"oa":"1","date_updated":"2025-02-12T09:12:05Z","author":[{"orcid":"https://orcid.org/0000-0002-7717-8670","last_name":"von Neumann","full_name":"von Neumann, Thilo","id":"49870","first_name":"Thilo"},{"first_name":"Christoph","full_name":"Boeddeker, Christoph","id":"40767","last_name":"Boeddeker"},{"full_name":"Delcroix, Marc","last_name":"Delcroix","first_name":"Marc"},{"first_name":"Reinhold","last_name":"Haeb-Umbach","id":"242","full_name":"Haeb-Umbach, Reinhold"}],"abstract":[{"text":"MeetEval is an open-source toolkit to evaluate all kinds of meeting transcription systems.\r\nIt provides a unified interface for the computation of commonly used Word Error Rates (WERs), specifically cpWER, ORC WER and MIMO WER along other WER definitions.\r\nWe extend the cpWER computation by a temporal constraint to ensure that only words are identified as correct when the temporal alignment is plausible.\r\nThis leads to a better quality of the matching of the hypothesis string to the reference string that more closely resembles the actual transcription quality, and a system is penalized if it provides poor time annotations.\r\nSince word-level timing information is often not available, we present a way to approximate exact word-level timings from segment-level timings (e.g., a sentence) and show that the approximation leads to a similar WER as a matching with exact word-level annotations.\r\nAt the same time, the time constraint leads to a speedup of the matching algorithm, which outweighs the additional overhead caused by processing the time stamps.","lang":"eng"}],"file":[{"content_type":"application/pdf","relation":"main_file","date_created":"2023-10-19T07:19:59Z","creator":"tvn","date_updated":"2023-10-19T07:19:59Z","access_level":"open_access","file_id":"48276","file_name":"Chime_7__MeetEval.pdf","file_size":263744}],"publication":"Proc. CHiME 2023 Workshop on Speech Processing in Everyday Environments","ddc":["000"],"keyword":["Speech Recognition","Word Error Rate","Meeting Transcription"],"language":[{"iso":"eng"}],"year":"2023","quality_controlled":"1","title":"MeetEval: A Toolkit for Computation of Word Error Rates for Meeting Transcription Systems","date_created":"2023-10-19T07:24:51Z"},{"_id":"47128","project":[{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"grant_number":"448568305","_id":"508","name":"Automatische Transkription von Gesprächssituationen"}],"department":[{"_id":"54"}],"user_id":"40767","file_date_updated":"2023-11-15T14:56:18Z","type":"conference","status":"public","date_updated":"2025-02-12T09:14:45Z","oa":"1","author":[{"last_name":"Cord-Landwehr","id":"44393","full_name":"Cord-Landwehr, Tobias","first_name":"Tobias"},{"first_name":"Christoph","last_name":"Boeddeker","full_name":"Boeddeker, Christoph","id":"40767"},{"first_name":"Cătălin","last_name":"Zorilă","full_name":"Zorilă, Cătălin"},{"first_name":"Rama","full_name":"Doddipatla, Rama","last_name":"Doddipatla"},{"id":"242","full_name":"Haeb-Umbach, Reinhold","last_name":"Haeb-Umbach","first_name":"Reinhold"}],"conference":{"name":"2023 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)","location":"Rhodes"},"doi":"10.1109/icassp49357.2023.10095370","has_accepted_license":"1","publication_status":"published","citation":{"short":"T. Cord-Landwehr, C. Boeddeker, C. Zorilă, R. Doddipatla, R. Haeb-Umbach, in: ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), IEEE, 2023.","bibtex":"@inproceedings{Cord-Landwehr_Boeddeker_Zorilă_Doddipatla_Haeb-Umbach_2023, title={Frame-Wise and Overlap-Robust Speaker Embeddings for Meeting Diarization}, DOI={10.1109/icassp49357.2023.10095370}, booktitle={ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)}, publisher={IEEE}, author={Cord-Landwehr, Tobias and Boeddeker, Christoph and Zorilă, Cătălin and Doddipatla, Rama and Haeb-Umbach, Reinhold}, year={2023} }","mla":"Cord-Landwehr, Tobias, et al. “Frame-Wise and Overlap-Robust Speaker Embeddings for Meeting Diarization.” ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), IEEE, 2023, doi:10.1109/icassp49357.2023.10095370.","apa":"Cord-Landwehr, T., Boeddeker, C., Zorilă, C., Doddipatla, R., & Haeb-Umbach, R. (2023). Frame-Wise and Overlap-Robust Speaker Embeddings for Meeting Diarization. ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). 2023 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Rhodes. https://doi.org/10.1109/icassp49357.2023.10095370","ama":"Cord-Landwehr T, Boeddeker C, Zorilă C, Doddipatla R, Haeb-Umbach R. Frame-Wise and Overlap-Robust Speaker Embeddings for Meeting Diarization. In: ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE; 2023. doi:10.1109/icassp49357.2023.10095370","chicago":"Cord-Landwehr, Tobias, Christoph Boeddeker, Cătălin Zorilă, Rama Doddipatla, and Reinhold Haeb-Umbach. “Frame-Wise and Overlap-Robust Speaker Embeddings for Meeting Diarization.” In ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2023. https://doi.org/10.1109/icassp49357.2023.10095370.","ieee":"T. Cord-Landwehr, C. Boeddeker, C. Zorilă, R. Doddipatla, and R. Haeb-Umbach, “Frame-Wise and Overlap-Robust Speaker Embeddings for Meeting Diarization,” presented at the 2023 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Rhodes, 2023, doi: 10.1109/icassp49357.2023.10095370."},"ddc":["000"],"language":[{"iso":"eng"}],"publication":"ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)","file":[{"creator":"cord","date_created":"2023-11-15T14:56:18Z","date_updated":"2023-11-15T14:56:18Z","access_level":"open_access","file_name":"teacher_student_embeddings.pdf","file_id":"48932","file_size":246306,"content_type":"application/pdf","relation":"main_file"}],"publisher":"IEEE","date_created":"2023-09-19T14:01:20Z","title":"Frame-Wise and Overlap-Robust Speaker Embeddings for Meeting Diarization","year":"2023"},{"publication":"INTERSPEECH 2023","type":"conference","status":"public","file":[{"creator":"cord","date_created":"2023-11-15T15:00:02Z","date_updated":"2023-11-15T15:00:02Z","access_level":"open_access","file_name":"multispeaker_embeddings.pdf","file_id":"48933","file_size":303203,"content_type":"application/pdf","relation":"main_file"}],"department":[{"_id":"54"}],"user_id":"40767","_id":"47129","project":[{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"grant_number":"448568305","_id":"508","name":"Automatische Transkription von Gesprächssituationen"}],"file_date_updated":"2023-11-15T15:00:02Z","language":[{"iso":"eng"}],"ddc":["000"],"has_accepted_license":"1","publication_status":"published","citation":{"ama":"Cord-Landwehr T, Boeddeker C, Zorilă C, Doddipatla R, Haeb-Umbach R. A Teacher-Student Approach for Extracting Informative Speaker Embeddings From Speech Mixtures. In: INTERSPEECH 2023. ISCA; 2023. doi:10.21437/interspeech.2023-1379","chicago":"Cord-Landwehr, Tobias, Christoph Boeddeker, Cătălin Zorilă, Rama Doddipatla, and Reinhold Haeb-Umbach. “A Teacher-Student Approach for Extracting Informative Speaker Embeddings From Speech Mixtures.” In INTERSPEECH 2023. ISCA, 2023. https://doi.org/10.21437/interspeech.2023-1379.","ieee":"T. Cord-Landwehr, C. Boeddeker, C. Zorilă, R. Doddipatla, and R. Haeb-Umbach, “A Teacher-Student Approach for Extracting Informative Speaker Embeddings From Speech Mixtures,” 2023, doi: 10.21437/interspeech.2023-1379.","short":"T. Cord-Landwehr, C. Boeddeker, C. Zorilă, R. Doddipatla, R. Haeb-Umbach, in: INTERSPEECH 2023, ISCA, 2023.","mla":"Cord-Landwehr, Tobias, et al. “A Teacher-Student Approach for Extracting Informative Speaker Embeddings From Speech Mixtures.” INTERSPEECH 2023, ISCA, 2023, doi:10.21437/interspeech.2023-1379.","bibtex":"@inproceedings{Cord-Landwehr_Boeddeker_Zorilă_Doddipatla_Haeb-Umbach_2023, title={A Teacher-Student Approach for Extracting Informative Speaker Embeddings From Speech Mixtures}, DOI={10.21437/interspeech.2023-1379}, booktitle={INTERSPEECH 2023}, publisher={ISCA}, author={Cord-Landwehr, Tobias and Boeddeker, Christoph and Zorilă, Cătălin and Doddipatla, Rama and Haeb-Umbach, Reinhold}, year={2023} }","apa":"Cord-Landwehr, T., Boeddeker, C., Zorilă, C., Doddipatla, R., & Haeb-Umbach, R. (2023). A Teacher-Student Approach for Extracting Informative Speaker Embeddings From Speech Mixtures. INTERSPEECH 2023. https://doi.org/10.21437/interspeech.2023-1379"},"year":"2023","date_created":"2023-09-19T14:34:37Z","author":[{"first_name":"Tobias","last_name":"Cord-Landwehr","full_name":"Cord-Landwehr, Tobias","id":"44393"},{"full_name":"Boeddeker, Christoph","id":"40767","last_name":"Boeddeker","first_name":"Christoph"},{"last_name":"Zorilă","full_name":"Zorilă, Cătălin","first_name":"Cătălin"},{"first_name":"Rama","last_name":"Doddipatla","full_name":"Doddipatla, Rama"},{"first_name":"Reinhold","last_name":"Haeb-Umbach","full_name":"Haeb-Umbach, Reinhold","id":"242"}],"publisher":"ISCA","oa":"1","date_updated":"2025-02-12T09:15:28Z","doi":"10.21437/interspeech.2023-1379","title":"A Teacher-Student Approach for Extracting Informative Speaker Embeddings From Speech Mixtures"},{"language":[{"iso":"eng"}],"department":[{"_id":"54"}],"user_id":"40767","_id":"54439","project":[{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"name":"Automatische Transkription von Gesprächssituationen","_id":"508","grant_number":"448568305"}],"status":"public","publication":"7th International Workshop on Speech Processing in Everyday Environments (CHiME 2023)","type":"conference","doi":"10.21437/chime.2023-10","main_file_link":[{"url":"https://www.isca-archive.org/chime_2023/boeddeker23_chime.pdf","open_access":"1"}],"title":"Multi-stage diarization refinement for the CHiME-7 DASR scenario","date_created":"2024-05-23T15:16:15Z","author":[{"last_name":"Boeddeker","full_name":"Boeddeker, Christoph","id":"40767","first_name":"Christoph"},{"last_name":"Cord-Landwehr","full_name":"Cord-Landwehr, Tobias","id":"44393","first_name":"Tobias"},{"id":"49870","full_name":"von Neumann, Thilo","last_name":"von Neumann","orcid":"https://orcid.org/0000-0002-7717-8670","first_name":"Thilo"},{"first_name":"Reinhold","id":"242","full_name":"Haeb-Umbach, Reinhold","last_name":"Haeb-Umbach"}],"oa":"1","date_updated":"2025-02-12T09:16:13Z","publisher":"ISCA","citation":{"apa":"Boeddeker, C., Cord-Landwehr, T., von Neumann, T., & Haeb-Umbach, R. (2023). Multi-stage diarization refinement for the CHiME-7 DASR scenario. 7th International Workshop on Speech Processing in Everyday Environments (CHiME 2023). https://doi.org/10.21437/chime.2023-10","short":"C. Boeddeker, T. Cord-Landwehr, T. von Neumann, R. Haeb-Umbach, in: 7th International Workshop on Speech Processing in Everyday Environments (CHiME 2023), ISCA, 2023.","mla":"Boeddeker, Christoph, et al. “Multi-Stage Diarization Refinement for the CHiME-7 DASR Scenario.” 7th International Workshop on Speech Processing in Everyday Environments (CHiME 2023), ISCA, 2023, doi:10.21437/chime.2023-10.","bibtex":"@inproceedings{Boeddeker_Cord-Landwehr_von Neumann_Haeb-Umbach_2023, title={Multi-stage diarization refinement for the CHiME-7 DASR scenario}, DOI={10.21437/chime.2023-10}, booktitle={7th International Workshop on Speech Processing in Everyday Environments (CHiME 2023)}, publisher={ISCA}, author={Boeddeker, Christoph and Cord-Landwehr, Tobias and von Neumann, Thilo and Haeb-Umbach, Reinhold}, year={2023} }","ama":"Boeddeker C, Cord-Landwehr T, von Neumann T, Haeb-Umbach R. Multi-stage diarization refinement for the CHiME-7 DASR scenario. In: 7th International Workshop on Speech Processing in Everyday Environments (CHiME 2023). ISCA; 2023. doi:10.21437/chime.2023-10","chicago":"Boeddeker, Christoph, Tobias Cord-Landwehr, Thilo von Neumann, and Reinhold Haeb-Umbach. “Multi-Stage Diarization Refinement for the CHiME-7 DASR Scenario.” In 7th International Workshop on Speech Processing in Everyday Environments (CHiME 2023). ISCA, 2023. https://doi.org/10.21437/chime.2023-10.","ieee":"C. Boeddeker, T. Cord-Landwehr, T. von Neumann, and R. Haeb-Umbach, “Multi-stage diarization refinement for the CHiME-7 DASR scenario,” 2023, doi: 10.21437/chime.2023-10."},"year":"2023","publication_status":"published"},{"date_created":"2023-10-23T15:06:39Z","author":[{"first_name":"Simon","full_name":"Berger, Simon","last_name":"Berger"},{"last_name":"Vieting","full_name":"Vieting, Peter","first_name":"Peter"},{"last_name":"Boeddeker","full_name":"Boeddeker, Christoph","id":"40767","first_name":"Christoph"},{"last_name":"Schlüter","full_name":"Schlüter, Ralf","first_name":"Ralf"},{"id":"242","full_name":"Haeb-Umbach, Reinhold","last_name":"Haeb-Umbach","first_name":"Reinhold"}],"date_updated":"2025-02-12T09:11:30Z","publisher":"ISCA","oa":"1","doi":"10.21437/interspeech.2023-1815","main_file_link":[{"open_access":"1","url":"https://www.isca-archive.org/interspeech_2023/berger23_interspeech.pdf"}],"title":"Mixture Encoder for Joint Speech Separation and Recognition","publication_status":"published","citation":{"ama":"Berger S, Vieting P, Boeddeker C, Schlüter R, Haeb-Umbach R. Mixture Encoder for Joint Speech Separation and Recognition. In: INTERSPEECH 2023. ISCA; 2023. doi:10.21437/interspeech.2023-1815","ieee":"S. Berger, P. Vieting, C. Boeddeker, R. Schlüter, and R. Haeb-Umbach, “Mixture Encoder for Joint Speech Separation and Recognition,” 2023, doi: 10.21437/interspeech.2023-1815.","chicago":"Berger, Simon, Peter Vieting, Christoph Boeddeker, Ralf Schlüter, and Reinhold Haeb-Umbach. “Mixture Encoder for Joint Speech Separation and Recognition.” In INTERSPEECH 2023. ISCA, 2023. https://doi.org/10.21437/interspeech.2023-1815.","apa":"Berger, S., Vieting, P., Boeddeker, C., Schlüter, R., & Haeb-Umbach, R. (2023). Mixture Encoder for Joint Speech Separation and Recognition. INTERSPEECH 2023. https://doi.org/10.21437/interspeech.2023-1815","short":"S. Berger, P. Vieting, C. Boeddeker, R. Schlüter, R. Haeb-Umbach, in: INTERSPEECH 2023, ISCA, 2023.","mla":"Berger, Simon, et al. “Mixture Encoder for Joint Speech Separation and Recognition.” INTERSPEECH 2023, ISCA, 2023, doi:10.21437/interspeech.2023-1815.","bibtex":"@inproceedings{Berger_Vieting_Boeddeker_Schlüter_Haeb-Umbach_2023, title={Mixture Encoder for Joint Speech Separation and Recognition}, DOI={10.21437/interspeech.2023-1815}, booktitle={INTERSPEECH 2023}, publisher={ISCA}, author={Berger, Simon and Vieting, Peter and Boeddeker, Christoph and Schlüter, Ralf and Haeb-Umbach, Reinhold}, year={2023} }"},"year":"2023","department":[{"_id":"54"}],"user_id":"40767","_id":"48390","project":[{"name":"Automatische Transkription von Gesprächssituationen","_id":"508","grant_number":"448568305"}],"language":[{"iso":"eng"}],"publication":"INTERSPEECH 2023","type":"conference","status":"public"},{"language":[{"iso":"eng"}],"user_id":"59648","department":[{"_id":"58"}],"_id":"47009","status":"public","abstract":[{"text":"We present a fully integrated radio frequency identifications transponder chip operating at 5.8 GHz, which is compatible with the class-1 generation-2 of the Electronic Product Code protocol (EPC-C1 G2). The tag chip including the analog front-end and the digital baseband processor, are designed in the sub-threshold regime (0.5 V) with a total supply current of less than 50 μA. As a power scavenging unit, a single-stage differential-drive rectifier structure is designed and fabricated with standard threshold voltage (SVT) MOS elements in a commercial 65-nm CMOS process, to provide 0.8 V of rectified voltage. Measurements performed on the fabricated single-stage structure show a maximum power conversion efficiency of 69.6% for a 22 kΩ load and a sensitivity of -12.5 dBm, which corresponds to more than 1 m of reading range. The power conversion efficiency at this range is about 64%.","lang":"eng"}],"type":"journal_article","publication":" IEEE Journal of Radio Frequency Identification","conference":{"start_date":"2023-08-29"},"doi":"10.1109/JRFID.2023.3308332","title":"A Sub-Threshold Microwave RFID Tag Chip, Compatible With RFID MIMO Reader Technology","date_created":"2023-09-13T11:08:22Z","author":[{"first_name":"Sanaz","id":"59648","full_name":"Haddadian, Sanaz","last_name":"Haddadian"},{"full_name":"Scheytt, J. Christoph","id":"37144","orcid":"0000-0002-5950-6618 ","last_name":"Scheytt","first_name":"J. Christoph"},{"first_name":"Gerd","full_name":"von Bögel, Gerd","last_name":"von Bögel"},{"first_name":"Thorben","last_name":"Grenter","full_name":"Grenter, Thorben"}],"publisher":"IEEE","date_updated":"2025-02-13T14:24:24Z","citation":{"mla":"Haddadian, Sanaz, et al. “A Sub-Threshold Microwave RFID Tag Chip, Compatible With RFID MIMO Reader Technology.” IEEE Journal of Radio Frequency Identification, IEEE, 2023, doi:10.1109/JRFID.2023.3308332.","short":"S. Haddadian, J.C. Scheytt, G. von Bögel, T. Grenter, IEEE Journal of Radio Frequency Identification (2023).","bibtex":"@article{Haddadian_Scheytt_von Bögel_Grenter_2023, title={A Sub-Threshold Microwave RFID Tag Chip, Compatible With RFID MIMO Reader Technology}, DOI={10.1109/JRFID.2023.3308332}, journal={ IEEE Journal of Radio Frequency Identification}, publisher={IEEE}, author={Haddadian, Sanaz and Scheytt, J. Christoph and von Bögel, Gerd and Grenter, Thorben}, year={2023} }","apa":"Haddadian, S., Scheytt, J. C., von Bögel, G., & Grenter, T. (2023). A Sub-Threshold Microwave RFID Tag Chip, Compatible With RFID MIMO Reader Technology. IEEE Journal of Radio Frequency Identification. https://doi.org/10.1109/JRFID.2023.3308332","ama":"Haddadian S, Scheytt JC, von Bögel G, Grenter T. A Sub-Threshold Microwave RFID Tag Chip, Compatible With RFID MIMO Reader Technology. IEEE Journal of Radio Frequency Identification. Published online 2023. doi:10.1109/JRFID.2023.3308332","chicago":"Haddadian, Sanaz, J. Christoph Scheytt, Gerd von Bögel, and Thorben Grenter. “A Sub-Threshold Microwave RFID Tag Chip, Compatible With RFID MIMO Reader Technology.” IEEE Journal of Radio Frequency Identification, 2023. https://doi.org/10.1109/JRFID.2023.3308332.","ieee":"S. Haddadian, J. C. Scheytt, G. von Bögel, and T. Grenter, “A Sub-Threshold Microwave RFID Tag Chip, Compatible With RFID MIMO Reader Technology,” IEEE Journal of Radio Frequency Identification, 2023, doi: 10.1109/JRFID.2023.3308332."},"year":"2023","publication_status":"published","publication_identifier":{"eissn":["2469-7281"]}},{"_id":"58680","user_id":"71353","department":[{"_id":"52"}],"language":[{"iso":"eng"}],"type":"dissertation","abstract":[{"lang":"eng","text":"Heutige On-Board-Ladewandler sind typischerweise aus zwei Stufen aufgebaut, die über einen Spannungszwischenkreis verbunden sind. Als erste Stufe kommt ein PFC-Gleichrichter zum Einsatz, der die Anforderungen an den Netzstrom bezüglich Oberschwingungsgehalt und Leistungsfaktor sicherstellt. Für die zweite Wandler-Stufe hat sich in den vergangenen Jahren ein LLC-Resonanzwandler qualifiziert, der die Ladeleistung an die Traktionsbatterie galvanisch getrennt überträgt. Der Zwischenkreis besteht aus einer Bank von Elektrolytkondensatoren, in denen die pulsierende Eingangsleistung zwischengespeichert wird. Die Kondensatoren machen einen erheblichen Teil des Lader-Volumens aus und altern schnell, was insbesondere für Ladewandler an Bord von Elektrofahrzeugen unerwünscht ist. In der vorliegenden Arbeit wird untersucht, ob diese zweistufige Struktur verworfen werden kann, indem der LLC-Resonanzwandler direkt an die gleichgerichtete Netzspannung angeschlossen wird.Zum Einsatz des LLC-Resonanzwandlers als einstufiger Ladewandler ist die Schaltung für einen großen Strom- und Spannungsbereich auszulegen. Hierfür wird in der vorliegenden Arbeit eine erweiterte Zeitbereichsanalyse erarbeitet, deren hohe Modellierungsgenauigkeit im Anschluss experimentell nachgewiesen wird. Mit Hilfe dieser Zeitbereichsanalyse werden die Belastungsgrößen des Resonanzwandlers berechnet, um hiermit eine Vorauswahl der Schaltungsparameter treffen zu können. Darauf aufbauend erfolgt die Optimierung des integrierten Transformators als Schlüsselkomponente des Ladewandlers sowie dessen prototypische Realisierung. Abschließend wird mittels Prototypen die erzielbare Leistungsdichte ermittelt. Ergebnis: Verglichen mit etablierten Ladewandlern der heutigen Elektrofahrzeuge konnte durch den einstufigen Ansatz die Leistungsdichte um ca. 53% gesteigert werden."},{"text":"Today's on-board chargers of electric vehicles typically consist of two stages which are connected via a voltage DC link. A PFC rectifier is used as the first stage which ensures that the requirements for the mains current are met with respect to harmonic content and power factor. For the second converter stage, an LLC resonant converter has qualified in recent years which transmits the charging power to the traction battery in a galvanically isolated manner. The DC link consists of a bank of electrolytic capacitors in which the pulsating input power is buffered. The capacitors occupy a large portion of the charger volume and age rapidly, which is particularly undesirable for on-board chargers in electric vehicles. In the presented work, it is investigated whether this two-stage structure can be discarded by connecting the LLC resonant converter directly to the rectified line voltage.To use the LLC resonant converter as a single-stage charger, the circuit must be designed for a wide current and voltage range. For this purpose, an extended time-domain analysis is developed in this thesis, whose high modeling accuracy is subsequently demonstrated experimentally. With the help of this time domain analysis, the stress variables of the resonant converter are calculated in order to be able to make a preselection of the circuit parameters. Based on this, the optimization of the integrated transformer as a key component of the charger is carried out as well as its prototypical realization. Finally, the achievable power density is determined by means of prototypes. Result: Compared to established on-board chargers of today's electric vehicles, the single-stage approach increased the power density by about 53%.","lang":"eng"}],"status":"public","date_updated":"2025-02-18T09:06:48Z","publisher":"LibreCat University","author":[{"first_name":"Lukas","last_name":"Keuck","id":"42519","full_name":"Keuck, Lukas"}],"date_created":"2025-02-18T09:05:22Z","title":"Entwurf eines einstufigen Ladewandlers auf Basis eines LLC-Resonanzwandlers","doi":"10.17619/UNIPB/1-1727","year":"2023","citation":{"ama":"Keuck L. Entwurf Eines Einstufigen Ladewandlers Auf Basis Eines LLC-Resonanzwandlers. LibreCat University; 2023. doi:10.17619/UNIPB/1-1727","ieee":"L. Keuck, Entwurf eines einstufigen Ladewandlers auf Basis eines LLC-Resonanzwandlers. LibreCat University, 2023.","chicago":"Keuck, Lukas. Entwurf Eines Einstufigen Ladewandlers Auf Basis Eines LLC-Resonanzwandlers. LibreCat University, 2023. https://doi.org/10.17619/UNIPB/1-1727.","apa":"Keuck, L. (2023). Entwurf eines einstufigen Ladewandlers auf Basis eines LLC-Resonanzwandlers. LibreCat University. https://doi.org/10.17619/UNIPB/1-1727","bibtex":"@book{Keuck_2023, title={Entwurf eines einstufigen Ladewandlers auf Basis eines LLC-Resonanzwandlers}, DOI={10.17619/UNIPB/1-1727}, publisher={LibreCat University}, author={Keuck, Lukas}, year={2023} }","mla":"Keuck, Lukas. Entwurf Eines Einstufigen Ladewandlers Auf Basis Eines LLC-Resonanzwandlers. LibreCat University, 2023, doi:10.17619/UNIPB/1-1727.","short":"L. Keuck, Entwurf Eines Einstufigen Ladewandlers Auf Basis Eines LLC-Resonanzwandlers, LibreCat University, 2023."}},{"date_updated":"2025-02-20T08:21:41Z","publisher":"Association for Computational Linguistics","author":[{"last_name":"Alshomary","id":"73059","full_name":"Alshomary, Milad","first_name":"Milad"},{"full_name":"Wachsmuth, Henning","id":"3900","last_name":"Wachsmuth","first_name":"Henning"}],"date_created":"2025-02-20T08:20:35Z","title":"Conclusion-based Counter-Argument Generation","doi":"10.18653/v1/2023.eacl-main.67","place":"Dubrovnik, Croatia","year":"2023","page":"957–967","citation":{"apa":"Alshomary, M., & Wachsmuth, H. (2023). Conclusion-based Counter-Argument Generation. In A. Vlachos & I. Augenstein (Eds.), Proceedings of the 17th Conference of the European Chapter of the Association for Computational Linguistics (pp. 957–967). Association for Computational Linguistics. https://doi.org/10.18653/v1/2023.eacl-main.67","short":"M. Alshomary, H. Wachsmuth, in: A. Vlachos, I. Augenstein (Eds.), Proceedings of the 17th Conference of the European Chapter of the Association for Computational Linguistics, Association for Computational Linguistics, Dubrovnik, Croatia, 2023, pp. 957–967.","bibtex":"@inproceedings{Alshomary_Wachsmuth_2023, place={Dubrovnik, Croatia}, title={Conclusion-based Counter-Argument Generation}, DOI={10.18653/v1/2023.eacl-main.67}, booktitle={Proceedings of the 17th Conference of the European Chapter of the Association for Computational Linguistics}, publisher={Association for Computational Linguistics}, author={Alshomary, Milad and Wachsmuth, Henning}, editor={Vlachos, Andreas and Augenstein, Isabelle}, year={2023}, pages={957–967} }","mla":"Alshomary, Milad, and Henning Wachsmuth. “Conclusion-Based Counter-Argument Generation.” Proceedings of the 17th Conference of the European Chapter of the Association for Computational Linguistics, edited by Andreas Vlachos and Isabelle Augenstein, Association for Computational Linguistics, 2023, pp. 957–967, doi:10.18653/v1/2023.eacl-main.67.","ama":"Alshomary M, Wachsmuth H. Conclusion-based Counter-Argument Generation. In: Vlachos A, Augenstein I, eds. Proceedings of the 17th Conference of the European Chapter of the Association for Computational Linguistics. Association for Computational Linguistics; 2023:957–967. doi:10.18653/v1/2023.eacl-main.67","chicago":"Alshomary, Milad, and Henning Wachsmuth. “Conclusion-Based Counter-Argument Generation.” In Proceedings of the 17th Conference of the European Chapter of the Association for Computational Linguistics, edited by Andreas Vlachos and Isabelle Augenstein, 957–967. Dubrovnik, Croatia: Association for Computational Linguistics, 2023. https://doi.org/10.18653/v1/2023.eacl-main.67.","ieee":"M. Alshomary and H. Wachsmuth, “Conclusion-based Counter-Argument Generation,” in Proceedings of the 17th Conference of the European Chapter of the Association for Computational Linguistics, 2023, pp. 957–967, doi: 10.18653/v1/2023.eacl-main.67."},"_id":"58723","project":[{"name":"TRR 318 - INF: TRR 318 - Project Area INF","_id":"118"}],"department":[{"_id":"600"},{"_id":"660"}],"user_id":"3900","language":[{"iso":"eng"}],"publication":"Proceedings of the 17th Conference of the European Chapter of the Association for Computational Linguistics","type":"conference","editor":[{"full_name":"Vlachos, Andreas","last_name":"Vlachos","first_name":"Andreas"},{"last_name":"Augenstein","full_name":"Augenstein, Isabelle","first_name":"Isabelle"}],"abstract":[{"lang":"eng","text":"In real-world debates, the most common way to counter an argument is to reason against its main point, that is, its conclusion. Existing work on the automatic generation of natural language counter-arguments does not address the relation to the conclusion, possibly because many arguments leave their conclusion implicit. In this paper, we hypothesize that the key to effective counter-argument generation is to explicitly model the argument‘s conclusion and to ensure that the stance of the generated counter is opposite to that conclusion. In particular, we propose a multitask approach that jointly learns to generate both the conclusion and the counter of an input argument. The approach employs a stance-based ranking component that selects the counter from a diverse set of generated candidates whose stance best opposes the generated conclusion. In both automatic and manual evaluation, we provide evidence that our approach generates more relevant and stance-adhering counters than strong baselines."}],"status":"public"},{"status":"public","abstract":[{"text":"One of the main challenges for next generation automotive radars is the improvement of angular resolution to a sub-degree level. In this context, wide aperture automotive radars of 1m length or more and resolution close to 0.1° in azimuth and 0.5° in elevation could be beneficial. To enable coherent processing of arrays with such large aperture, prior (i.e offline) and online calibration are necessary: channel imbalances (gains and phases) and three dimensional coordinates of transmit and receive elements need to be determined. We propose a calibration strategy based on alternating steps between the two subtasks of i) channel imbalance estimation with ‘known’ array positions, by applying a singular value decomposition to the resulting tensor calculus problem; and ii) antenna position estimation with ’known’ channel imbalances, by numerically maximizing the Bayesian posterior probability; in both cases operating on range/Doppler snapshots of disjoint targets (with potentially unknown locations). Simulation studies based on the parameters of a MIMO 8x6 linear sparse array show promising results as long as the initial position errors do not exceed half a wavelength (2mm), beyond which we observe strong effects of ambiguity. Experimental results with real measurements show that after calibration in laboratory conditions, our MIMO 8x6 demonstrator with 50cm aperture is able to resolve two targets at the same range with angular separation at least as close as 0.4°.","lang":"eng"}],"publication":"2023 24th International Radar Symposium (IRS)","type":"conference","language":[{"iso":"eng"}],"department":[{"_id":"58"}],"user_id":"38254","_id":"46426","citation":{"short":"C. Greiff, D. Mateos-Núñez, R. Simoni, M. González-Huici, S. Kruse, J.C. Scheytt, K. Kolk, C. Höller, H.G. Kurz, M.-M. Meinecke, T. Gisder, in: 2023 24th International Radar Symposium (IRS), IEEE, 2023.","bibtex":"@inproceedings{Greiff_Mateos-Núñez_Simoni_González-Huici_Kruse_Scheytt_Kolk_Höller_Kurz_Meinecke_et al._2023, title={Calibration of Large Coherent MIMO Radar Arrays: Channel Imbalances and 3D Antenna Positions}, DOI={10.23919/IRS57608.2023.10172475}, booktitle={2023 24th International Radar Symposium (IRS)}, publisher={IEEE}, author={Greiff, Christian and Mateos-Núñez, David and Simoni, Renato and González-Huici, Maria and Kruse, Stephan and Scheytt, J. Christoph and Kolk, Karl and Höller, Christian and Kurz, Heiko Gustav and Meinecke, Marc-Michael and et al.}, year={2023} }","mla":"Greiff, Christian, et al. “Calibration of Large Coherent MIMO Radar Arrays: Channel Imbalances and 3D Antenna Positions.” 2023 24th International Radar Symposium (IRS), IEEE, 2023, doi:10.23919/IRS57608.2023.10172475.","apa":"Greiff, C., Mateos-Núñez, D., Simoni, R., González-Huici, M., Kruse, S., Scheytt, J. C., Kolk, K., Höller, C., Kurz, H. G., Meinecke, M.-M., & Gisder, T. (2023). Calibration of Large Coherent MIMO Radar Arrays: Channel Imbalances and 3D Antenna Positions. 2023 24th International Radar Symposium (IRS). 2023 24th International Radar Symposium (IRS), Berlin, Germany. https://doi.org/10.23919/IRS57608.2023.10172475","ama":"Greiff C, Mateos-Núñez D, Simoni R, et al. Calibration of Large Coherent MIMO Radar Arrays: Channel Imbalances and 3D Antenna Positions. In: 2023 24th International Radar Symposium (IRS). IEEE; 2023. doi:10.23919/IRS57608.2023.10172475","chicago":"Greiff, Christian , David Mateos-Núñez, Renato Simoni, Maria González-Huici, Stephan Kruse, J. Christoph Scheytt, Karl Kolk, et al. “Calibration of Large Coherent MIMO Radar Arrays: Channel Imbalances and 3D Antenna Positions.” In 2023 24th International Radar Symposium (IRS). IEEE, 2023. https://doi.org/10.23919/IRS57608.2023.10172475.","ieee":"C. Greiff et al., “Calibration of Large Coherent MIMO Radar Arrays: Channel Imbalances and 3D Antenna Positions,” presented at the 2023 24th International Radar Symposium (IRS), Berlin, Germany, 2023, doi: 10.23919/IRS57608.2023.10172475."},"year":"2023","publication_identifier":{"eisbn":["978-3-944976-34-1"]},"doi":"10.23919/IRS57608.2023.10172475","conference":{"end_date":"2023.05.26","location":"Berlin, Germany","name":"2023 24th International Radar Symposium (IRS)","start_date":"2023.05.24"},"title":"Calibration of Large Coherent MIMO Radar Arrays: Channel Imbalances and 3D Antenna Positions","date_created":"2023-08-07T06:45:11Z","author":[{"full_name":"Greiff, Christian ","last_name":"Greiff","first_name":"Christian "},{"first_name":"David","last_name":"Mateos-Núñez","full_name":"Mateos-Núñez, David"},{"first_name":"Renato","full_name":"Simoni, Renato","last_name":"Simoni"},{"last_name":"González-Huici","full_name":"González-Huici, Maria","first_name":"Maria"},{"id":"38254","full_name":"Kruse, Stephan","last_name":"Kruse","first_name":"Stephan"},{"first_name":"J. Christoph","orcid":"0000-0002-5950-6618 ","last_name":"Scheytt","id":"37144","full_name":"Scheytt, J. Christoph"},{"full_name":"Kolk, Karl","last_name":"Kolk","first_name":"Karl"},{"first_name":"Christian","full_name":"Höller, Christian","last_name":"Höller"},{"first_name":"Heiko Gustav","last_name":"Kurz","full_name":"Kurz, Heiko Gustav"},{"first_name":"Marc-Michael","full_name":"Meinecke, Marc-Michael","last_name":"Meinecke"},{"full_name":"Gisder, Thomas","last_name":"Gisder","first_name":"Thomas"}],"date_updated":"2025-02-25T05:52:16Z","publisher":"IEEE"},{"language":[{"iso":"eng"}],"_id":"42800","user_id":"38254","department":[{"_id":"58"},{"_id":"230"}],"abstract":[{"text":"In this paper we present a new system architecture for software-defined radio / radar with optical signal distribution. The proposed architecture allows to transmit the optical carrier and an arbitrary IQ signal on the same fiber from a base station to wireless transmitters using a single laser. Furthermore, we can reuse parts, and under special conditions, also the complete optical output of the base station for the IQ return path from the wireless receiver frontends to the base station. Avoiding multiple lasers and fibers for the distribution of the carrier and arbitrary signal from the base station to the frontend, and avoiding the laser diode for the IQ return path from receiver frontends to the base station reduces the hardware effort significantly. Finally, the system architecture allows to integrate all components of the optoelectronic wireless frontend in a single chip using silicon photonics technology.","lang":"eng"}],"status":"public","type":"conference","title":"Distributed System Architecture for Software-Defined Radio / Radar with Optical Signal Distribution","doi":"10.23919/IRS57608.2023.10172470","conference":{"end_date":"2023.05.26","location":"Fraunhofer-Forum Berlin, Germany","name":"INTERNATIONAL RADAR SYMPOSIUM (IRS 2023)","start_date":"2023.05.24"},"date_updated":"2025-02-25T05:51:15Z","date_created":"2023-03-07T08:50:56Z","author":[{"first_name":"Stephan","last_name":"Kruse","full_name":"Kruse, Stephan","id":"38254"},{"first_name":"Pascal","id":"47367","full_name":"Kneuper, Pascal","last_name":"Kneuper"},{"id":"39217","full_name":"Schwabe, Tobias","last_name":"Schwabe","first_name":"Tobias"},{"first_name":"Marc-Michael","full_name":"Meinecke, Marc-Michael","last_name":"Meinecke"},{"full_name":"Kurz, Heiko G.","last_name":"Kurz","first_name":"Heiko G."},{"first_name":"J. Christoph","full_name":"Scheytt, J. Christoph","id":"37144","last_name":"Scheytt","orcid":"https://orcid.org/0000-0002-5950-6618"}],"year":"2023","citation":{"apa":"Kruse, S., Kneuper, P., Schwabe, T., Meinecke, M.-M., Kurz, H. G., & Scheytt, J. C. (2023). Distributed System Architecture for Software-Defined Radio / Radar with Optical Signal Distribution. INTERNATIONAL RADAR SYMPOSIUM (IRS 2023), Fraunhofer-Forum Berlin, Germany. https://doi.org/10.23919/IRS57608.2023.10172470","mla":"Kruse, Stephan, et al. Distributed System Architecture for Software-Defined Radio / Radar with Optical Signal Distribution. 2023, doi:10.23919/IRS57608.2023.10172470.","bibtex":"@inproceedings{Kruse_Kneuper_Schwabe_Meinecke_Kurz_Scheytt_2023, title={Distributed System Architecture for Software-Defined Radio / Radar with Optical Signal Distribution}, DOI={10.23919/IRS57608.2023.10172470}, author={Kruse, Stephan and Kneuper, Pascal and Schwabe, Tobias and Meinecke, Marc-Michael and Kurz, Heiko G. and Scheytt, J. Christoph}, year={2023} }","short":"S. Kruse, P. Kneuper, T. Schwabe, M.-M. Meinecke, H.G. Kurz, J.C. Scheytt, in: 2023.","ieee":"S. Kruse, P. Kneuper, T. Schwabe, M.-M. Meinecke, H. G. Kurz, and J. C. Scheytt, “Distributed System Architecture for Software-Defined Radio / Radar with Optical Signal Distribution,” presented at the INTERNATIONAL RADAR SYMPOSIUM (IRS 2023), Fraunhofer-Forum Berlin, Germany, 2023, doi: 10.23919/IRS57608.2023.10172470.","chicago":"Kruse, Stephan, Pascal Kneuper, Tobias Schwabe, Marc-Michael Meinecke, Heiko G. Kurz, and J. Christoph Scheytt. “Distributed System Architecture for Software-Defined Radio / Radar with Optical Signal Distribution,” 2023. https://doi.org/10.23919/IRS57608.2023.10172470.","ama":"Kruse S, Kneuper P, Schwabe T, Meinecke M-M, Kurz HG, Scheytt JC. Distributed System Architecture for Software-Defined Radio / Radar with Optical Signal Distribution. In: ; 2023. doi:10.23919/IRS57608.2023.10172470"}},{"publication":"2023 20th European Radar Conference (EuRAD)","type":"conference","status":"public","_id":"47124","department":[{"_id":"58"}],"user_id":"38254","language":[{"iso":"eng"}],"year":"2023","citation":{"ama":"Kruse S, Meinecke M-M, Kneuper P, Schwabe T, Kurz HG, Scheytt JC. Analysis and Simulation of a Coherent FMCW Lidar-Photonic Radar Combined Sensor System for Large Aperture Phased Array MIMO. In: 2023 20th European Radar Conference (EuRAD). ; 2023. doi:10.23919/EuRAD58043.2023.10289439","chicago":"Kruse, Stephan, Marc-Michael Meinecke, Pascal Kneuper, Tobias Schwabe, Heiko G. Kurz, and J. Christoph Scheytt. “Analysis and Simulation of a Coherent FMCW Lidar-Photonic Radar Combined Sensor System for Large Aperture Phased Array MIMO.” In 2023 20th European Radar Conference (EuRAD), 2023. https://doi.org/10.23919/EuRAD58043.2023.10289439.","ieee":"S. Kruse, M.-M. Meinecke, P. Kneuper, T. Schwabe, H. G. Kurz, and J. C. Scheytt, “Analysis and Simulation of a Coherent FMCW Lidar-Photonic Radar Combined Sensor System for Large Aperture Phased Array MIMO,” Berlin, 2023, doi: 10.23919/EuRAD58043.2023.10289439.","short":"S. Kruse, M.-M. Meinecke, P. Kneuper, T. Schwabe, H.G. Kurz, J.C. Scheytt, in: 2023 20th European Radar Conference (EuRAD), 2023.","bibtex":"@inproceedings{Kruse_Meinecke_Kneuper_Schwabe_Kurz_Scheytt_2023, title={Analysis and Simulation of a Coherent FMCW Lidar-Photonic Radar Combined Sensor System for Large Aperture Phased Array MIMO}, DOI={10.23919/EuRAD58043.2023.10289439}, booktitle={2023 20th European Radar Conference (EuRAD)}, author={Kruse, Stephan and Meinecke, Marc-Michael and Kneuper, Pascal and Schwabe, Tobias and Kurz, Heiko G. and Scheytt, J. Christoph}, year={2023} }","mla":"Kruse, Stephan, et al. “Analysis and Simulation of a Coherent FMCW Lidar-Photonic Radar Combined Sensor System for Large Aperture Phased Array MIMO.” 2023 20th European Radar Conference (EuRAD), 2023, doi:10.23919/EuRAD58043.2023.10289439.","apa":"Kruse, S., Meinecke, M.-M., Kneuper, P., Schwabe, T., Kurz, H. G., & Scheytt, J. C. (2023). Analysis and Simulation of a Coherent FMCW Lidar-Photonic Radar Combined Sensor System for Large Aperture Phased Array MIMO. 2023 20th European Radar Conference (EuRAD). https://doi.org/10.23919/EuRAD58043.2023.10289439"},"date_updated":"2025-02-25T05:51:57Z","author":[{"first_name":"Stephan","id":"38254","full_name":"Kruse, Stephan","last_name":"Kruse"},{"last_name":"Meinecke","full_name":"Meinecke, Marc-Michael","first_name":"Marc-Michael"},{"first_name":"Pascal","last_name":"Kneuper","id":"47367","full_name":"Kneuper, Pascal"},{"last_name":"Schwabe","id":"39217","full_name":"Schwabe, Tobias","first_name":"Tobias"},{"last_name":"Kurz","full_name":"Kurz, Heiko G.","first_name":"Heiko G."},{"id":"37144","full_name":"Scheytt, J. Christoph","orcid":"0000-0002-5950-6618 ","last_name":"Scheytt","first_name":"J. Christoph"}],"date_created":"2023-09-19T06:46:12Z","title":"Analysis and Simulation of a Coherent FMCW Lidar-Photonic Radar Combined Sensor System for Large Aperture Phased Array MIMO","doi":"10.23919/EuRAD58043.2023.10289439","conference":{"start_date":"2023-09-20","location":"Berlin","end_date":"2023-09-22"}},{"date_created":"2023-09-19T06:57:57Z","author":[{"last_name":"Kruse","id":"38254","full_name":"Kruse, Stephan","first_name":"Stephan"},{"first_name":"Jan C.","last_name":"Greitens","full_name":"Greitens, Jan C."},{"first_name":"Tobias","id":"39217","full_name":"Schwabe, Tobias","last_name":"Schwabe"},{"first_name":"Pascal","last_name":"Kneuper","full_name":"Kneuper, Pascal","id":"47367"},{"first_name":"Heiko G.","full_name":"Kurz, Heiko G.","last_name":"Kurz"},{"id":"37144","full_name":"Scheytt, J. Christoph","orcid":"0000-0002-5950-6618 ","last_name":"Scheytt","first_name":"J. Christoph"}],"date_updated":"2025-02-25T05:42:19Z","doi":"10.1109/LMWT.2023.3315315","title":"A Narrowband Four-Quadrant Electro-Optical Mixer for Microwave Photonics","citation":{"apa":"Kruse, S., Greitens, J. C., Schwabe, T., Kneuper, P., Kurz, H. G., & Scheytt, J. C. (2023). A Narrowband Four-Quadrant Electro-Optical Mixer for Microwave Photonics. IEEE Microwave and Wireless Technology Letters . https://doi.org/10.1109/LMWT.2023.3315315","short":"S. Kruse, J.C. Greitens, T. Schwabe, P. Kneuper, H.G. Kurz, J.C. Scheytt, IEEE Microwave and Wireless Technology Letters (2023).","mla":"Kruse, Stephan, et al. “A Narrowband Four-Quadrant Electro-Optical Mixer for Microwave Photonics.” IEEE Microwave and Wireless Technology Letters , 2023, doi:10.1109/LMWT.2023.3315315.","bibtex":"@article{Kruse_Greitens_Schwabe_Kneuper_Kurz_Scheytt_2023, title={A Narrowband Four-Quadrant Electro-Optical Mixer for Microwave Photonics}, DOI={10.1109/LMWT.2023.3315315}, journal={IEEE Microwave and Wireless Technology Letters }, author={Kruse, Stephan and Greitens, Jan C. and Schwabe, Tobias and Kneuper, Pascal and Kurz, Heiko G. and Scheytt, J. Christoph}, year={2023} }","chicago":"Kruse, Stephan, Jan C. Greitens, Tobias Schwabe, Pascal Kneuper, Heiko G. Kurz, and J. Christoph Scheytt. “A Narrowband Four-Quadrant Electro-Optical Mixer for Microwave Photonics.” IEEE Microwave and Wireless Technology Letters , 2023. https://doi.org/10.1109/LMWT.2023.3315315.","ieee":"S. Kruse, J. C. Greitens, T. Schwabe, P. Kneuper, H. G. Kurz, and J. C. Scheytt, “A Narrowband Four-Quadrant Electro-Optical Mixer for Microwave Photonics,” IEEE Microwave and Wireless Technology Letters , 2023, doi: 10.1109/LMWT.2023.3315315.","ama":"Kruse S, Greitens JC, Schwabe T, Kneuper P, Kurz HG, Scheytt JC. A Narrowband Four-Quadrant Electro-Optical Mixer for Microwave Photonics. IEEE Microwave and Wireless Technology Letters . Published online 2023. doi:10.1109/LMWT.2023.3315315"},"year":"2023","department":[{"_id":"58"},{"_id":"230"}],"user_id":"38254","_id":"47126","language":[{"iso":"eng"}],"publication":"IEEE Microwave and Wireless Technology Letters ","type":"journal_article","status":"public"},{"type":"conference","status":"public","abstract":[{"lang":"eng","text":"This paper presents a method to model monolithically integrated photonic radar transceiver (TRX) with optical local oscillator (LO) distribution in silicon germanium (SiGe) electronic photonic integrated circuits (EPICs). The model proposed approximates the behavior of the nonlinear scattering (S)-parameters and noise figure of each building block of the TRX chipset by Laplace polynomials and hyperbolic tangent functions. The modular approach of the model allows to optimize hardware components with respect to the entire TRX system, and fault identification with reduced computational effort.\r\nThe proposed method is validated using the first monolithically integrated photonic radar transceiver chipset and shows excellent agreement with the post layout simulation results and, including the photodiode (PD) bandwidth (BW) degradation, also with the measurements.\r\n"}],"department":[{"_id":"58"},{"_id":"230"}],"user_id":"38254","_id":"42804","language":[{"iso":"eng"}],"citation":{"apa":"Kruse, S., Schwabe, T., Kneuper, P., Meinecke, M.-M., Kurz, H. G., & Scheytt, J. C. (2023). Nonlinear S-Parameter Behavioral Model of a Photonic Radar Transceiver Chipset for Automotive Applications. INTERNATIONAL RADAR SYMPOSIUM (IRS 2023), Fraunhofer-Forum Berlin, Germany. https://doi.org/10.23919/IRS57608.2023.10172395","short":"S. Kruse, T. Schwabe, P. Kneuper, M.-M. Meinecke, H.G. Kurz, J.C. Scheytt, in: 2023.","mla":"Kruse, Stephan, et al. Nonlinear S-Parameter Behavioral Model of a Photonic Radar Transceiver Chipset for Automotive Applications. 2023, doi:10.23919/IRS57608.2023.10172395.","bibtex":"@inproceedings{Kruse_Schwabe_Kneuper_Meinecke_Kurz_Scheytt_2023, title={Nonlinear S-Parameter Behavioral Model of a Photonic Radar Transceiver Chipset for Automotive Applications}, DOI={10.23919/IRS57608.2023.10172395}, author={Kruse, Stephan and Schwabe, Tobias and Kneuper, Pascal and Meinecke, Marc-Michael and Kurz, Heiko G. and Scheytt, J. Christoph}, year={2023} }","chicago":"Kruse, Stephan, Tobias Schwabe, Pascal Kneuper, Marc-Michael Meinecke, Heiko G. Kurz, and J. Christoph Scheytt. “Nonlinear S-Parameter Behavioral Model of a Photonic Radar Transceiver Chipset for Automotive Applications,” 2023. https://doi.org/10.23919/IRS57608.2023.10172395.","ieee":"S. Kruse, T. Schwabe, P. Kneuper, M.-M. Meinecke, H. G. Kurz, and J. C. Scheytt, “Nonlinear S-Parameter Behavioral Model of a Photonic Radar Transceiver Chipset for Automotive Applications,” presented at the INTERNATIONAL RADAR SYMPOSIUM (IRS 2023), Fraunhofer-Forum Berlin, Germany, 2023, doi: 10.23919/IRS57608.2023.10172395.","ama":"Kruse S, Schwabe T, Kneuper P, Meinecke M-M, Kurz HG, Scheytt JC. Nonlinear S-Parameter Behavioral Model of a Photonic Radar Transceiver Chipset for Automotive Applications. In: ; 2023. doi:10.23919/IRS57608.2023.10172395"},"year":"2023","author":[{"first_name":"Stephan","full_name":"Kruse, Stephan","id":"38254","last_name":"Kruse"},{"first_name":"Tobias","last_name":"Schwabe","id":"39217","full_name":"Schwabe, Tobias"},{"first_name":"Pascal","id":"47367","full_name":"Kneuper, Pascal","last_name":"Kneuper"},{"first_name":"Marc-Michael","last_name":"Meinecke","full_name":"Meinecke, Marc-Michael"},{"first_name":"Heiko G.","full_name":"Kurz, Heiko G.","last_name":"Kurz"},{"first_name":"J. Christoph","id":"37144","full_name":"Scheytt, J. Christoph","last_name":"Scheytt","orcid":"https://orcid.org/0000-0002-5950-6618"}],"date_created":"2023-03-07T08:55:33Z","date_updated":"2025-02-25T05:53:22Z","conference":{"start_date":"2023.05.24","name":"INTERNATIONAL RADAR SYMPOSIUM (IRS 2023)","location":"Fraunhofer-Forum Berlin, Germany","end_date":"2023.05.26"},"doi":"10.23919/IRS57608.2023.10172395","title":"Nonlinear S-Parameter Behavioral Model of a Photonic Radar Transceiver Chipset for Automotive Applications"},{"conference":{"location":"MONTEREY, CALIFORNIA, USA","end_date":"2023-10-18","start_date":"2023-10-15"},"title":"A 28-Gb/s 27.2 mW NRZ Full-Rate Bang-Bang Clock and Data Recovery in 22 nm FD-SOI CMOS Technology ","author":[{"first_name":"Mohammed","last_name":"Iftekhar","full_name":"Iftekhar, Mohammed","id":"47944"},{"first_name":"Harshan","last_name":"Nagaraju","full_name":"Nagaraju, Harshan"},{"last_name":"Kneuper","full_name":"Kneuper, Pascal","id":"47367","first_name":"Pascal"},{"first_name":"Babak","last_name":"Sadiye","id":"93634","full_name":"Sadiye, Babak"},{"first_name":"Wolfgang","full_name":"Müller, Wolfgang","id":"16243","last_name":"Müller"},{"first_name":"J. Christoph","full_name":"Scheytt, J. Christoph","id":"37144","orcid":"0000-0002-5950-6618 ","last_name":"Scheytt"}],"date_created":"2023-09-14T11:30:36Z","date_updated":"2025-02-26T14:41:53Z","citation":{"mla":"Iftekhar, Mohammed, et al. “A 28-Gb/s 27.2 MW NRZ Full-Rate Bang-Bang Clock and Data Recovery in 22 Nm FD-SOI CMOS Technology .” BCICTS 2023 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium, 2023.","bibtex":"@inproceedings{Iftekhar_Nagaraju_Kneuper_Sadiye_Müller_Scheytt_2023, title={A 28-Gb/s 27.2 mW NRZ Full-Rate Bang-Bang Clock and Data Recovery in 22 nm FD-SOI CMOS Technology }, booktitle={BCICTS 2023 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium}, author={Iftekhar, Mohammed and Nagaraju, Harshan and Kneuper, Pascal and Sadiye, Babak and Müller, Wolfgang and Scheytt, J. Christoph}, year={2023} }","short":"M. Iftekhar, H. Nagaraju, P. Kneuper, B. Sadiye, W. Müller, J.C. Scheytt, in: BCICTS 2023 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium, 2023.","apa":"Iftekhar, M., Nagaraju, H., Kneuper, P., Sadiye, B., Müller, W., & Scheytt, J. C. (2023). A 28-Gb/s 27.2 mW NRZ Full-Rate Bang-Bang Clock and Data Recovery in 22 nm FD-SOI CMOS Technology . BCICTS 2023 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium.","ieee":"M. Iftekhar, H. Nagaraju, P. Kneuper, B. Sadiye, W. Müller, and J. C. Scheytt, “A 28-Gb/s 27.2 mW NRZ Full-Rate Bang-Bang Clock and Data Recovery in 22 nm FD-SOI CMOS Technology ,” MONTEREY, CALIFORNIA, USA, 2023.","chicago":"Iftekhar, Mohammed, Harshan Nagaraju, Pascal Kneuper, Babak Sadiye, Wolfgang Müller, and J. Christoph Scheytt. “A 28-Gb/s 27.2 MW NRZ Full-Rate Bang-Bang Clock and Data Recovery in 22 Nm FD-SOI CMOS Technology .” In BCICTS 2023 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium, 2023.","ama":"Iftekhar M, Nagaraju H, Kneuper P, Sadiye B, Müller W, Scheytt JC. A 28-Gb/s 27.2 mW NRZ Full-Rate Bang-Bang Clock and Data Recovery in 22 nm FD-SOI CMOS Technology . In: BCICTS 2023 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium. ; 2023."},"year":"2023","related_material":{"link":[{"url":"https://bcicts.org/","relation":"contains"}]},"language":[{"iso":"eng"}],"user_id":"15931","department":[{"_id":"58"}],"_id":"47064","status":"public","type":"conference_abstract","publication":"BCICTS 2023 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium"},{"extern":"1","language":[{"iso":"eng"}],"_id":"60355","user_id":"117512","department":[{"_id":"969"}],"abstract":[{"text":"We present a method for the generation of higher-order tetrahedral meshes. In contrast to previous methods, the curved tetrahedral elements are guaranteed to be free of degeneracies and inversions while conforming exactly to prescribed piecewise polynomial surfaces, such as domain boundaries or material interfaces. Arbitrary polynomial order is supported. Algorithmically, the polynomial input surfaces are first covered by a single layer of carefully constructed curved elements using a recursive refinement procedure that provably avoids degeneracies and inversions. These tetrahedral elements are designed such that the remaining space is bounded piecewise linearly. In this way, our method effectively reduces the curved meshing problem to the classical problem of linear mesh generation (for the remaining space).","lang":"eng"}],"status":"public","type":"journal_article","publication":"ACM Transactions on Graphics","title":"3D Bézier Guarding: Boundary-Conforming Curved Tetrahedral Meshing","doi":"10.1145/3618332","date_updated":"2025-07-14T12:46:54Z","publisher":"Association for Computing Machinery (ACM)","date_created":"2025-06-24T07:46:53Z","author":[{"first_name":"Payam","last_name":"Khanteimouri","full_name":"Khanteimouri, Payam"},{"orcid":"0000-0003-2340-3462","last_name":"Campen","full_name":"Campen, Marcel","id":"114904","first_name":"Marcel"}],"volume":42,"year":"2023","citation":{"apa":"Khanteimouri, P., & Campen, M. (2023). 3D Bézier Guarding: Boundary-Conforming Curved Tetrahedral Meshing. ACM Transactions on Graphics, 42(6), 1–19. https://doi.org/10.1145/3618332","bibtex":"@article{Khanteimouri_Campen_2023, title={3D Bézier Guarding: Boundary-Conforming Curved Tetrahedral Meshing}, volume={42}, DOI={10.1145/3618332}, number={6}, journal={ACM Transactions on Graphics}, publisher={Association for Computing Machinery (ACM)}, author={Khanteimouri, Payam and Campen, Marcel}, year={2023}, pages={1–19} }","mla":"Khanteimouri, Payam, and Marcel Campen. “3D Bézier Guarding: Boundary-Conforming Curved Tetrahedral Meshing.” ACM Transactions on Graphics, vol. 42, no. 6, Association for Computing Machinery (ACM), 2023, pp. 1–19, doi:10.1145/3618332.","short":"P. Khanteimouri, M. Campen, ACM Transactions on Graphics 42 (2023) 1–19.","ieee":"P. Khanteimouri and M. Campen, “3D Bézier Guarding: Boundary-Conforming Curved Tetrahedral Meshing,” ACM Transactions on Graphics, vol. 42, no. 6, pp. 1–19, 2023, doi: 10.1145/3618332.","chicago":"Khanteimouri, Payam, and Marcel Campen. “3D Bézier Guarding: Boundary-Conforming Curved Tetrahedral Meshing.” ACM Transactions on Graphics 42, no. 6 (2023): 1–19. https://doi.org/10.1145/3618332.","ama":"Khanteimouri P, Campen M. 3D Bézier Guarding: Boundary-Conforming Curved Tetrahedral Meshing. ACM Transactions on Graphics. 2023;42(6):1-19. doi:10.1145/3618332"},"intvolume":" 42","page":"1-19","publication_status":"published","publication_identifier":{"issn":["0730-0301","1557-7368"]},"issue":"6"},{"doi":"10.1145/3592421","title":"Expansion Cones: A Progressive Volumetric Mapping Framework","volume":42,"date_created":"2025-06-23T10:58:12Z","author":[{"first_name":"Valentin Zénon","full_name":"Nigolian, Valentin Zénon","last_name":"Nigolian"},{"last_name":"Campen","orcid":"0000-0003-2340-3462","full_name":"Campen, Marcel","id":"114904","first_name":"Marcel"},{"last_name":"Bommes","full_name":"Bommes, David","first_name":"David"}],"publisher":"Association for Computing Machinery (ACM)","date_updated":"2025-07-14T12:47:55Z","page":"1-19","intvolume":" 42","citation":{"ieee":"V. Z. Nigolian, M. Campen, and D. Bommes, “Expansion Cones: A Progressive Volumetric Mapping Framework,” ACM Transactions on Graphics, vol. 42, no. 4, pp. 1–19, 2023, doi: 10.1145/3592421.","chicago":"Nigolian, Valentin Zénon, Marcel Campen, and David Bommes. “Expansion Cones: A Progressive Volumetric Mapping Framework.” ACM Transactions on Graphics 42, no. 4 (2023): 1–19. https://doi.org/10.1145/3592421.","ama":"Nigolian VZ, Campen M, Bommes D. Expansion Cones: A Progressive Volumetric Mapping Framework. ACM Transactions on Graphics. 2023;42(4):1-19. doi:10.1145/3592421","short":"V.Z. Nigolian, M. Campen, D. Bommes, ACM Transactions on Graphics 42 (2023) 1–19.","mla":"Nigolian, Valentin Zénon, et al. “Expansion Cones: A Progressive Volumetric Mapping Framework.” ACM Transactions on Graphics, vol. 42, no. 4, Association for Computing Machinery (ACM), 2023, pp. 1–19, doi:10.1145/3592421.","bibtex":"@article{Nigolian_Campen_Bommes_2023, title={Expansion Cones: A Progressive Volumetric Mapping Framework}, volume={42}, DOI={10.1145/3592421}, number={4}, journal={ACM Transactions on Graphics}, publisher={Association for Computing Machinery (ACM)}, author={Nigolian, Valentin Zénon and Campen, Marcel and Bommes, David}, year={2023}, pages={1–19} }","apa":"Nigolian, V. Z., Campen, M., & Bommes, D. (2023). Expansion Cones: A Progressive Volumetric Mapping Framework. ACM Transactions on Graphics, 42(4), 1–19. https://doi.org/10.1145/3592421"},"year":"2023","issue":"4","publication_identifier":{"issn":["0730-0301","1557-7368"]},"publication_status":"published","language":[{"iso":"eng"}],"extern":"1","department":[{"_id":"969"}],"user_id":"117512","_id":"60337","status":"public","abstract":[{"lang":"eng","text":"\r\n Volumetric mapping is a ubiquitous and difficult problem in Geometry Processing and has been the subject of research in numerous and various directions. While several methods show encouraging results, the field still lacks a general approach with guarantees regarding map bijectivity. Through this work, we aim at opening the door to a new family of methods by providing a novel framework based on the concept of\r\n progressive expansion.\r\n Starting from an initial map of a tetrahedral mesh whose image may contain degeneracies but no inversions, we incrementally adjust vertex images to expand degenerate elements. By restricting movement to so-called\r\n expansion cones\r\n , it is done in such a way that the number of degenerate elements decreases in a strictly monotonic manner, without ever introducing any inversion. Adaptive local refinement of the mesh is performed to facilitate this process. We describe a prototype algorithm in the realm of this framework for the computation of maps from ball-topology tetrahedral meshes to convex or star-shaped domains. This algorithm is evaluated and compared to state-of-the-art methods, demonstrating its benefits in terms of bijectivity. We also discuss the associated cost in terms of sometimes significant mesh refinement to obtain the necessary degrees of freedom required for establishing a valid mapping. Our conclusions include that while this algorithm is only of limited immediate practical utility due to efficiency concerns, the general framework has the potential to inspire a range of novel methods improving on the efficiency aspect.\r\n "}],"publication":"ACM Transactions on Graphics","type":"journal_article"},{"year":"2023","citation":{"apa":"Brückler, H., & Campen, M. (2023). Collapsing Embedded Cell Complexes for Safer Hexahedral Meshing. ACM Transactions on Graphics, 42(6), 1–24. https://doi.org/10.1145/3618384","bibtex":"@article{Brückler_Campen_2023, title={Collapsing Embedded Cell Complexes for Safer Hexahedral Meshing}, volume={42}, DOI={10.1145/3618384}, number={6}, journal={ACM Transactions on Graphics}, publisher={Association for Computing Machinery (ACM)}, author={Brückler, Hendrik and Campen, Marcel}, year={2023}, pages={1–24} }","mla":"Brückler, Hendrik, and Marcel Campen. “Collapsing Embedded Cell Complexes for Safer Hexahedral Meshing.” ACM Transactions on Graphics, vol. 42, no. 6, Association for Computing Machinery (ACM), 2023, pp. 1–24, doi:10.1145/3618384.","short":"H. Brückler, M. Campen, ACM Transactions on Graphics 42 (2023) 1–24.","ama":"Brückler H, Campen M. Collapsing Embedded Cell Complexes for Safer Hexahedral Meshing. ACM Transactions on Graphics. 2023;42(6):1-24. doi:10.1145/3618384","ieee":"H. Brückler and M. Campen, “Collapsing Embedded Cell Complexes for Safer Hexahedral Meshing,” ACM Transactions on Graphics, vol. 42, no. 6, pp. 1–24, 2023, doi: 10.1145/3618384.","chicago":"Brückler, Hendrik, and Marcel Campen. “Collapsing Embedded Cell Complexes for Safer Hexahedral Meshing.” ACM Transactions on Graphics 42, no. 6 (2023): 1–24. https://doi.org/10.1145/3618384."},"intvolume":" 42","page":"1-24","publication_status":"published","publication_identifier":{"issn":["0730-0301","1557-7368"]},"issue":"6","title":"Collapsing Embedded Cell Complexes for Safer Hexahedral Meshing","doi":"10.1145/3618384","date_updated":"2025-07-14T12:47:30Z","publisher":"Association for Computing Machinery (ACM)","date_created":"2025-06-24T07:45:44Z","author":[{"first_name":"Hendrik","last_name":"Brückler","full_name":"Brückler, Hendrik","id":"115694"},{"last_name":"Campen","orcid":"0000-0003-2340-3462","id":"114904","full_name":"Campen, Marcel","first_name":"Marcel"}],"volume":42,"abstract":[{"text":"We present a set of operators to perform modifications, in particular collapses and splits, in volumetric cell complexes which are discretely embedded in a background mesh. Topological integrity and geometric embedding validity are carefully maintained. We apply these operators strategically to volumetric block decompositions, so-called T-meshes or base complexes, in the context of hexahedral mesh generation. This allows circumventing the expensive and unreliable global volumetric remapping step in the versatile meshing pipeline based on 3D integer-grid maps. In essence, we reduce this step to simpler local cube mapping problems, for which reliable solutions are available. As a consequence, the robustness of the mesh generation process is increased, especially when targeting coarse or block-structured hexahedral meshes. We furthermore extend this pipeline to support feature alignment constraints, and systematically respect these throughout, enabling the generation of meshes that align to points, curves, and surfaces of special interest, whether on the boundary or in the interior of the domain.","lang":"eng"}],"status":"public","type":"journal_article","publication":"ACM Transactions on Graphics","language":[{"iso":"eng"}],"extern":"1","_id":"60354","user_id":"117512","department":[{"_id":"969"}]}]