[{"abstract":[{"lang":"eng","text":"OpenPGP and S/MIME are two major standards for securing email communication introduced in the early 1990s. Three recent classes of attacks exploit weak cipher modes (EFAIL Malleability Gadgets, or EFAIL-MG), the flexibility of the MIME email structure (EFAIL Direct Exfiltration, or EFAIL-DE), and the Reply action of the email client (REPLY attacks). Although all three break message confidentiality by using standardized email features, only EFAIL-MG has been mitigated in IETF standards with the introduction of AEAD algorithms. So far, no uniform and reliable countermeasures have been adopted by email clients to prevent EFAIL-DE and REPLY attacks. Instead, email clients implement a variety of different ad-hoc countermeasures which are only partially effective, cause interoperability problems, and fragment the secure email ecosystem.We present the first generic countermeasure against both REPLY and EFAIL-DE attacks by checking the decryption context including SMTP headers and MIME structure during decryption. The decryption context is encoded into a string DC and used as Associated Data (AD) in the AEAD encryption. Thus the proposed solution seamlessly extends the EFAIL-MG countermeasures. The decryption context changes whenever an attacker alters the email source code in a critical way, for example, if the attacker changes the MIME structure or adds a new Reply-To header. The proposed solution does not cause any interoperability problems and legacy emails can still be decrypted. We evaluate our approach by implementing the decryption contexts in Thunderbird/Enigmail and by verifying their correct functionality after the email has been transported over all major email providers, including Gmail and iCloud Mail."}],"status":"public","type":"conference","publication":"Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security","keyword":["decryption contexts","EFAIL","OpenPGP","S/MIME","AEAD"],"language":[{"iso":"eng"}],"_id":"25336","series_title":"CCS '20","user_id":"83504","department":[{"_id":"632"}],"place":"New York, NY, USA","year":"2020","citation":{"chicago":"Schwenk, Jörg, Marcus Brinkmann, Damian Poddebniak, Jens Müller, Juraj Somorovsky, and Sebastian Schinzel. “Mitigation of Attacks on Email End-to-End Encryption.” In <i>Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security</i>, 1647–1664. CCS ’20. New York, NY, USA: Association for Computing Machinery, 2020. <a href=\"https://doi.org/10.1145/3372297.3417878\">https://doi.org/10.1145/3372297.3417878</a>.","ieee":"J. Schwenk, M. Brinkmann, D. Poddebniak, J. Müller, J. Somorovsky, and S. Schinzel, “Mitigation of Attacks on Email End-to-End Encryption,” in <i>Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security</i>, 2020, pp. 1647–1664, doi: <a href=\"https://doi.org/10.1145/3372297.3417878\">10.1145/3372297.3417878</a>.","ama":"Schwenk J, Brinkmann M, Poddebniak D, Müller J, Somorovsky J, Schinzel S. Mitigation of Attacks on Email End-to-End Encryption. In: <i>Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security</i>. CCS ’20. Association for Computing Machinery; 2020:1647–1664. doi:<a href=\"https://doi.org/10.1145/3372297.3417878\">10.1145/3372297.3417878</a>","apa":"Schwenk, J., Brinkmann, M., Poddebniak, D., Müller, J., Somorovsky, J., &#38; Schinzel, S. (2020). Mitigation of Attacks on Email End-to-End Encryption. <i>Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security</i>, 1647–1664. <a href=\"https://doi.org/10.1145/3372297.3417878\">https://doi.org/10.1145/3372297.3417878</a>","bibtex":"@inproceedings{Schwenk_Brinkmann_Poddebniak_Müller_Somorovsky_Schinzel_2020, place={New York, NY, USA}, series={CCS ’20}, title={Mitigation of Attacks on Email End-to-End Encryption}, DOI={<a href=\"https://doi.org/10.1145/3372297.3417878\">10.1145/3372297.3417878</a>}, booktitle={Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security}, publisher={Association for Computing Machinery}, author={Schwenk, Jörg and Brinkmann, Marcus and Poddebniak, Damian and Müller, Jens and Somorovsky, Juraj and Schinzel, Sebastian}, year={2020}, pages={1647–1664}, collection={CCS ’20} }","short":"J. Schwenk, M. Brinkmann, D. Poddebniak, J. Müller, J. Somorovsky, S. Schinzel, in: Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security, Association for Computing Machinery, New York, NY, USA, 2020, pp. 1647–1664.","mla":"Schwenk, Jörg, et al. “Mitigation of Attacks on Email End-to-End Encryption.” <i>Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security</i>, Association for Computing Machinery, 2020, pp. 1647–1664, doi:<a href=\"https://doi.org/10.1145/3372297.3417878\">10.1145/3372297.3417878</a>."},"page":"1647–1664","publication_status":"published","publication_identifier":{"isbn":["9781450370899"]},"title":"Mitigation of Attacks on Email End-to-End Encryption","doi":"10.1145/3372297.3417878","publisher":"Association for Computing Machinery","date_updated":"2022-08-03T09:57:27Z","author":[{"last_name":"Schwenk","full_name":"Schwenk, Jörg","first_name":"Jörg"},{"first_name":"Marcus","last_name":"Brinkmann","full_name":"Brinkmann, Marcus"},{"last_name":"Poddebniak","full_name":"Poddebniak, Damian","first_name":"Damian"},{"first_name":"Jens","full_name":"Müller, Jens","last_name":"Müller"},{"id":"83504","full_name":"Somorovsky, Juraj","last_name":"Somorovsky","orcid":"0000-0002-3593-7720","first_name":"Juraj"},{"first_name":"Sebastian","full_name":"Schinzel, Sebastian","last_name":"Schinzel"}],"date_created":"2021-10-04T18:58:37Z"},{"_id":"10003","user_id":"210","department":[{"_id":"151"}],"keyword":["Schwingungsanalyse","nichtlineare Strukturdynamik","Multisinus","Duffing-Schwinger","amplitudenabhängige Nichtlinearität","Peakbending","Backbone Curve","Schwingungsmessung","Frequenzverstimmung","Autoregression","Best Linear Approximation"],"language":[{"iso":"eng"}],"type":"dissertation","abstract":[{"text":"Die Bestimmung des Frequenzübertragungsverhaltens von Strukturen mit nichtlinearer Charakteristik ist eine im technischen Bereich vielfach auftretende Aufgabe, z.B. für die genaue Bestimmung dynamischer Eigenschaften in der Entwurfsphase oder bei der Parametrierung von Modellen. Die typisch angewandten Verfahren zur Schwingungsmessung solcher Strukturen legen in der Regel ein lineares Strukturverhalten zu Grunde, oder sie erfordern einen hohen Zeit- und Messaufwand für die Abbildung des nichtlinearen Verhaltens; häufig in Verbindung mit einer starken Belastung der zu testenden Struktur. Die Bestimmung nichtlinearen Strukturverhaltens ist somit oft nicht effizient realisierbar. In der vorliegenden Arbeit wird ein neuer Ansatz zur Schwingungsanalyse nichtlinearer Strukturen mit von der Anregungsamplitude abhängigem Übertragungsverhalten vorgestellt. Dabei liegt ein Schwerpunkt auf der messtechnischen Bestimmung des nichtlinearen Verhaltens bei deutlich reduziertem Zeit- bzw. Messaufwand. Das Verfahren basiert auf einer Messmethode, die eine effiziente Bestimmung des nichtlinearen Kennfeldes der analysierten Struktur mit speziellen multiharmonischen Anregungssignalen ermöglicht. In Kombination mit einem fortschrittlichen Auswertealgorithmus kann eine vollständige Beschreibung des dynamischen Verhaltens in Form eines charakteristischen Diagramms generiert werden. Das Messverfahren wird durch eine Identifikationsroutine ergänzt, die die erforderliche Anzahl an Messungen nochmals reduzieren kann. Es ist als Mess-System auf Hard- und Software implementiert; der Funktionsnachweis erfolgt an verschiedenen Beispielen.","lang":"ger"}],"status":"public","date_updated":"2023-09-15T12:25:37Z","publisher":"Shaker","date_created":"2019-05-27T10:33:08Z","author":[{"first_name":"Christian","last_name":"Sprock","full_name":"Sprock, Christian"}],"title":"Zeiteffiziente messtechnische Analyse glatt-nichtlinearen Schwingverhaltens dynamischer Strukturen","year":"2019","citation":{"apa":"Sprock, C. (2019). <i>Zeiteffiziente messtechnische Analyse glatt-nichtlinearen Schwingverhaltens dynamischer Strukturen</i>. Shaker.","bibtex":"@book{Sprock_2019, title={Zeiteffiziente messtechnische Analyse glatt-nichtlinearen Schwingverhaltens dynamischer Strukturen}, publisher={Shaker}, author={Sprock, Christian}, year={2019} }","short":"C. Sprock, Zeiteffiziente Messtechnische Analyse Glatt-Nichtlinearen Schwingverhaltens Dynamischer Strukturen, Shaker, 2019.","mla":"Sprock, Christian. <i>Zeiteffiziente Messtechnische Analyse Glatt-Nichtlinearen Schwingverhaltens Dynamischer Strukturen</i>. Shaker, 2019.","ama":"Sprock C. <i>Zeiteffiziente Messtechnische Analyse Glatt-Nichtlinearen Schwingverhaltens Dynamischer Strukturen</i>. Shaker; 2019.","ieee":"C. Sprock, <i>Zeiteffiziente messtechnische Analyse glatt-nichtlinearen Schwingverhaltens dynamischer Strukturen</i>. Shaker, 2019.","chicago":"Sprock, Christian. <i>Zeiteffiziente Messtechnische Analyse Glatt-Nichtlinearen Schwingverhaltens Dynamischer Strukturen</i>. Shaker, 2019."}},{"file":[{"content_type":"application/pdf","success":1,"relation":"main_file","date_updated":"2018-11-27T10:03:33Z","creator":"tillk","date_created":"2018-11-27T10:03:33Z","file_size":1122875,"access_level":"closed","file_id":"5863","file_name":"A Peer-to-Peer based Cloud Storage supporting orthogonal Range Queries of arbitrary Dimension.pdf"}],"status":"public","abstract":[{"lang":"eng","text":"We present a peer-to-peer network that supports the efficient processing of orthogonal range queries $R=\\bigtimes_{i=1}^{d}[a_i,\\,b_i]$ in a $d$-dimensional point space.\\\\\r\nThe  network is the same for each dimension, namely a distance halving network like the one introduced by Naor and Wieder (ACM TALG'07).\r\nWe show how to execute such range queries using $\\mathcal{O}\\left(2^{d'}d\\,\\log m + d\\,|R|\\right)$ hops (and the same number of messages) in total. Here $[m]^d$ is the ground set, $|R|$ is the size and $d'$ the dimension of the queried range.\r\nFurthermore, if the peers form a distributed network, the query can be answered in $\\mathcal{O}\\left(d\\,\\log m + d\\,\\sum_{i=1}^{d}(b_i-a_i+1)\\right)$ communication rounds.\r\nOur algorithms are based on a mapping of the Hilbert Curve through $[m]^d$ to the peers."}],"type":"conference","publication":"Proceedings of the 4th International Symposium on Algorithmic Aspects of Cloud Computing (ALGOCLOUD)","file_date_updated":"2018-11-27T10:03:33Z","language":[{"iso":"eng"}],"ddc":["000"],"keyword":["Distributed Storage","Multi-Dimensional Range Queries","Peer-to-Peer","Hilbert Curve"],"user_id":"14955","department":[{"_id":"63"},{"_id":"79"}],"project":[{"name":"SFB 901","_id":"1"},{"_id":"2","name":"SFB 901 - Project Area A"},{"_id":"5","name":"SFB 901 - Subproject A1"}],"_id":"4375","citation":{"apa":"Benter, M., Knollmann, T., Meyer auf der Heide, F., Setzer, A., &#38; Sundermeier, J. (2018). A Peer-to-Peer based Cloud Storage supporting orthogonal Range Queries of arbitrary Dimension. In <i>Proceedings of the 4th International Symposium on Algorithmic Aspects of Cloud Computing (ALGOCLOUD)</i>. Helsinki. <a href=\"https://doi.org/10.1007/978-3-030-19759-9_4\">https://doi.org/10.1007/978-3-030-19759-9_4</a>","short":"M. Benter, T. Knollmann, F. Meyer auf der Heide, A. Setzer, J. Sundermeier, in: Proceedings of the 4th International Symposium on Algorithmic Aspects of Cloud Computing (ALGOCLOUD), 2018.","bibtex":"@inproceedings{Benter_Knollmann_Meyer auf der Heide_Setzer_Sundermeier_2018, title={A Peer-to-Peer based Cloud Storage supporting orthogonal Range Queries of arbitrary Dimension}, DOI={<a href=\"https://doi.org/10.1007/978-3-030-19759-9_4\">10.1007/978-3-030-19759-9_4</a>}, booktitle={Proceedings of the 4th International Symposium on Algorithmic Aspects of Cloud Computing (ALGOCLOUD)}, author={Benter, Markus and Knollmann, Till and Meyer auf der Heide, Friedhelm and Setzer, Alexander and Sundermeier, Jannik}, year={2018} }","mla":"Benter, Markus, et al. “A Peer-to-Peer Based Cloud Storage Supporting Orthogonal Range Queries of Arbitrary Dimension.” <i>Proceedings of the 4th International Symposium on Algorithmic Aspects of Cloud Computing (ALGOCLOUD)</i>, 2018, doi:<a href=\"https://doi.org/10.1007/978-3-030-19759-9_4\">10.1007/978-3-030-19759-9_4</a>.","ama":"Benter M, Knollmann T, Meyer auf der Heide F, Setzer A, Sundermeier J. A Peer-to-Peer based Cloud Storage supporting orthogonal Range Queries of arbitrary Dimension. In: <i>Proceedings of the 4th International Symposium on Algorithmic Aspects of Cloud Computing (ALGOCLOUD)</i>. ; 2018. doi:<a href=\"https://doi.org/10.1007/978-3-030-19759-9_4\">10.1007/978-3-030-19759-9_4</a>","chicago":"Benter, Markus, Till Knollmann, Friedhelm Meyer auf der Heide, Alexander Setzer, and Jannik Sundermeier. “A Peer-to-Peer Based Cloud Storage Supporting Orthogonal Range Queries of Arbitrary Dimension.” In <i>Proceedings of the 4th International Symposium on Algorithmic Aspects of Cloud Computing (ALGOCLOUD)</i>, 2018. <a href=\"https://doi.org/10.1007/978-3-030-19759-9_4\">https://doi.org/10.1007/978-3-030-19759-9_4</a>.","ieee":"M. Benter, T. Knollmann, F. Meyer auf der Heide, A. Setzer, and J. Sundermeier, “A Peer-to-Peer based Cloud Storage supporting orthogonal Range Queries of arbitrary Dimension,” in <i>Proceedings of the 4th International Symposium on Algorithmic Aspects of Cloud Computing (ALGOCLOUD)</i>, Helsinki, 2018."},"year":"2018","has_accepted_license":"1","conference":{"name":"4th International Symposium on Algorithmic Aspects of Cloud Computing (ALGOCLOUD)","start_date":"2018-08-20","end_date":"2018-08-21","location":"Helsinki"},"doi":"10.1007/978-3-030-19759-9_4","title":"A Peer-to-Peer based Cloud Storage supporting orthogonal Range Queries of arbitrary Dimension","author":[{"last_name":"Benter","full_name":"Benter, Markus","first_name":"Markus"},{"first_name":"Till","orcid":"0000-0003-2014-4696","last_name":"Knollmann","id":"39241","full_name":"Knollmann, Till"},{"last_name":"Meyer auf der Heide","id":"15523","full_name":"Meyer auf der Heide, Friedhelm","first_name":"Friedhelm"},{"last_name":"Setzer","full_name":"Setzer, Alexander","id":"11108","first_name":"Alexander"},{"first_name":"Jannik","last_name":"Sundermeier","full_name":"Sundermeier, Jannik","id":"38705"}],"date_created":"2018-09-11T05:26:59Z","date_updated":"2022-01-06T07:01:00Z"},{"abstract":[{"lang":"eng","text":"The transition from school to university can be overwhelming for some students. While students' motivation is considered a strong predictor of performance, the development of motivation during students' transition from high school to university has rarely been investigated. Additionally, little is known about the relation of motivational aspects with other influences on study performance. The present mixed methods study addresses this research gap and examines the development of economics students' study motivation. The longitudinal mixed-method study included three waves of data collected using quantitative surveys and a series of five interviews conducted with 14 first-year students over eight months. Regarding students' development over time, the quantitative analysis showed a gradual decline in students' motivation. However, in the interviews, certain events during the first year were identified as critical incidents demotivating students. These insights into the development of students' motivation at a business school show that concrete incidents influence students' motivational development; thus, they could be transformed by structural changes."}],"status":"public","type":"conference","keyword":["motivation","business school","higher education","latent growth curve model","longitudinal study","mixed methods","interview","students"],"extern":"1","_id":"4474","department":[{"_id":"208"},{"_id":"282"}],"user_id":"51057","year":"2014","citation":{"ama":"Brahm T, Jenert T. The crucial first year: The development of students’ motivation at a Business School-a Mixed Methods Study. In: ; 2014.","chicago":"Brahm, Taiga, and Tobias Jenert. “The Crucial First Year: The Development of Students’ Motivation at a Business School-a Mixed Methods Study,” 2014.","ieee":"T. Brahm and T. Jenert, “The crucial first year: The development of students’ motivation at a Business School-a Mixed Methods Study,” presented at the SIG4 Higher Education &#38; SIG17 Qualitative and Quantitative Approaches to Learning and Instruction Earli SIG Conference 2014, Leuven, 2014.","mla":"Brahm, Taiga, and Tobias Jenert. <i>The Crucial First Year: The Development of Students’ Motivation at a Business School-a Mixed Methods Study</i>. 2014.","short":"T. Brahm, T. Jenert, in: 2014.","bibtex":"@inproceedings{Brahm_Jenert_2014, title={The crucial first year: The development of students’ motivation at a Business School-a Mixed Methods Study}, author={Brahm, Taiga and Jenert, Tobias}, year={2014} }","apa":"Brahm, T., &#38; Jenert, T. (2014). The crucial first year: The development of students’ motivation at a Business School-a Mixed Methods Study. Presented at the SIG4 Higher Education &#38; SIG17 Qualitative and Quantitative Approaches to Learning and Instruction Earli SIG Conference 2014, Leuven."},"title":"The crucial first year: The development of students' motivation at a Business School-a Mixed Methods Study","conference":{"end_date":"2014-08-22","location":"Leuven","name":"SIG4 Higher Education & SIG17 Qualitative and Quantitative Approaches to Learning and Instruction Earli SIG Conference 2014","start_date":"2014-08-20"},"date_updated":"2022-01-06T07:01:06Z","date_created":"2018-09-19T08:06:46Z","author":[{"full_name":"Brahm, Taiga","last_name":"Brahm","first_name":"Taiga"},{"full_name":"Jenert, Tobias","id":"71994","last_name":"Jenert","orcid":" https://orcid.org/0000-0001-9262-5646","first_name":"Tobias"}]},{"department":[{"_id":"208"},{"_id":"282"}],"user_id":"51057","_id":"4480","extern":"1","keyword":["motivation","intrinsic motivation","extrinsic motivation","latent growth curve modeling","longitudinal data analysis","ASEQ","higher education","studying"],"type":"conference","status":"public","abstract":[{"text":"The proposed paper aims to investigate the longitudinal development of students' motivation over the first year of their studies at a business school by using latent growth curve modeling. The study tackles the following core research questions: How do first-year university students' intrinsic and extrinsic vary over time? Which (motivational) factors are related to students' motivational development? Although motivational dispositions have been analyzed extensively in previous studies, their longitudinal development has hitherto not been examined in the higher education context.\r\n\r\nThis longitudinal study is conducted at the University of St. Gallen in Switzerland. The current sample includes 280 first-year students who have been surveyed three times and who are representative of the first-year student population.\r\n\r\nDescriptive results show that prior to their studies, students were motivated most by intrinsic factors, however, extrinsic motivation was also quite high. Employing latent growth curve modeling, it could be shown that both intrinsic and extrinsic motivation decline significantly over the course of the first year (8 months).\r\n\r\nThe study contributes to motivation theory by providing further insights into the development of academic motivation over time. Latent growth curve modeling as a method can be well used for longitudinal data analysis, thus, excluding measurement error from longitudinal data. Furthermore, the study supports educational developers by determining factors influencing students' motivational development.","lang":"eng"}],"author":[{"last_name":"Brahm","full_name":"Brahm, Taiga","first_name":"Taiga"},{"id":"71994","full_name":"Jenert, Tobias","orcid":" https://orcid.org/0000-0001-9262-5646","last_name":"Jenert","first_name":"Tobias"}],"date_created":"2018-09-19T08:27:05Z","date_updated":"2022-01-06T07:01:06Z","publisher":"EARLI European Association for Research on Learning and Instruction","conference":{"end_date":"2013-08-31","location":"München","name":"15th Biennial EARLI Conference","start_date":"2013-08-27"},"title":"A latent growth curve analysis of Business students' intrinsic and extrinsic motivation","citation":{"apa":"Brahm, T., &#38; Jenert, T. (2013). A latent growth curve analysis of Business students’ intrinsic and extrinsic motivation. Presented at the 15th Biennial EARLI Conference, München: EARLI European Association for Research on Learning and Instruction.","bibtex":"@inproceedings{Brahm_Jenert_2013, title={A latent growth curve analysis of Business students’ intrinsic and extrinsic motivation}, publisher={EARLI European Association for Research on Learning and Instruction}, author={Brahm, Taiga and Jenert, Tobias}, year={2013} }","short":"T. Brahm, T. Jenert, in: EARLI European Association for Research on Learning and Instruction, 2013.","mla":"Brahm, Taiga, and Tobias Jenert. <i>A Latent Growth Curve Analysis of Business Students’ Intrinsic and Extrinsic Motivation</i>. EARLI European Association for Research on Learning and Instruction, 2013.","chicago":"Brahm, Taiga, and Tobias Jenert. “A Latent Growth Curve Analysis of Business Students’ Intrinsic and Extrinsic Motivation.” EARLI European Association for Research on Learning and Instruction, 2013.","ieee":"T. Brahm and T. Jenert, “A latent growth curve analysis of Business students’ intrinsic and extrinsic motivation,” presented at the 15th Biennial EARLI Conference, München, 2013.","ama":"Brahm T, Jenert T. A latent growth curve analysis of Business students’ intrinsic and extrinsic motivation. In: EARLI European Association for Research on Learning and Instruction; 2013."},"year":"2013"},{"year":"2002","citation":{"ama":"Bischoff R, Haeb-Umbach R, Schulz W, Heinrichs G. Employment of a multipath receiver structure in a combined GALILEO/UMTS receiver. In: <i>IEEE 55th Vehicular Technology Conference (VTC 2002 Spring)</i>. Vol 4. ; 2002:1844-1848 vol.4. doi:<a href=\"https://doi.org/10.1109/VTC.2002.1002940\">10.1109/VTC.2002.1002940</a>","chicago":"Bischoff, Renke, Reinhold Haeb-Umbach, Wolfgang Schulz, and Guenther Heinrichs. “Employment of a Multipath Receiver Structure in a Combined GALILEO/UMTS Receiver.” In <i>IEEE 55th Vehicular Technology Conference (VTC 2002 Spring)</i>, 4:1844–48 vol.4, 2002. <a href=\"https://doi.org/10.1109/VTC.2002.1002940\">https://doi.org/10.1109/VTC.2002.1002940</a>.","ieee":"R. Bischoff, R. Haeb-Umbach, W. Schulz, and G. Heinrichs, “Employment of a multipath receiver structure in a combined GALILEO/UMTS receiver,” in <i>IEEE 55th Vehicular Technology Conference (VTC 2002 Spring)</i>, 2002, vol. 4, pp. 1844–1848 vol.4.","apa":"Bischoff, R., Haeb-Umbach, R., Schulz, W., &#38; Heinrichs, G. (2002). Employment of a multipath receiver structure in a combined GALILEO/UMTS receiver. In <i>IEEE 55th Vehicular Technology Conference (VTC 2002 Spring)</i> (Vol. 4, pp. 1844–1848 vol.4). <a href=\"https://doi.org/10.1109/VTC.2002.1002940\">https://doi.org/10.1109/VTC.2002.1002940</a>","mla":"Bischoff, Renke, et al. “Employment of a Multipath Receiver Structure in a Combined GALILEO/UMTS Receiver.” <i>IEEE 55th Vehicular Technology Conference (VTC 2002 Spring)</i>, vol. 4, 2002, pp. 1844–48 vol.4, doi:<a href=\"https://doi.org/10.1109/VTC.2002.1002940\">10.1109/VTC.2002.1002940</a>.","short":"R. Bischoff, R. Haeb-Umbach, W. Schulz, G. Heinrichs, in: IEEE 55th Vehicular Technology Conference (VTC 2002 Spring), 2002, pp. 1844–1848 vol.4.","bibtex":"@inproceedings{Bischoff_Haeb-Umbach_Schulz_Heinrichs_2002, title={Employment of a multipath receiver structure in a combined GALILEO/UMTS receiver}, volume={4}, DOI={<a href=\"https://doi.org/10.1109/VTC.2002.1002940\">10.1109/VTC.2002.1002940</a>}, booktitle={IEEE 55th Vehicular Technology Conference (VTC 2002 Spring)}, author={Bischoff, Renke and Haeb-Umbach, Reinhold and Schulz, Wolfgang and Heinrichs, Guenther}, year={2002}, pages={1844–1848 vol.4} }"},"intvolume":"         4","page":"1844-1848 vol.4","oa":"1","date_updated":"2022-01-06T06:51:08Z","author":[{"first_name":"Renke","last_name":"Bischoff","full_name":"Bischoff, Renke"},{"last_name":"Haeb-Umbach","id":"242","full_name":"Haeb-Umbach, Reinhold","first_name":"Reinhold"},{"first_name":"Wolfgang","last_name":"Schulz","full_name":"Schulz, Wolfgang"},{"first_name":"Guenther","full_name":"Heinrichs, Guenther","last_name":"Heinrichs"}],"date_created":"2019-07-12T05:27:12Z","volume":4,"title":"Employment of a multipath receiver structure in a combined GALILEO/UMTS receiver","main_file_link":[{"open_access":"1","url":"https://groups.uni-paderborn.de/nt/pubs/2002/BiHaScHe02.pdf"}],"doi":"10.1109/VTC.2002.1002940","type":"conference","publication":"IEEE 55th Vehicular Technology Conference (VTC 2002 Spring)","abstract":[{"lang":"eng","text":"Current navigation systems like GPS (Global Positioning System) and its Russian counterpart GLONASS (Global Navigation Satellite System) only evaluate the direct signal path. The receivers treat the reflected paths also reaching the receiver antenna as disturbance which has to be suppressed. Multipath affects the tracking accuracy by resulting in a degeneration of the S-curve of the DLL (delay locked loop). Nowadays the future European systems GALILEO and GPSIIF/III with two new signals are on the way to the market and it is time to think about new receiver structures. Therefore we investigated if it is possible to use multipath for navigation constructively."}],"status":"public","_id":"11733","user_id":"44006","department":[{"_id":"54"}],"keyword":["combined GALILEO/UMTS receiver","delay locked loop","delay lock loops","DLL","Global Positioning System","GLONASS","GPS","GPSIIF/III","mobile satellite communication","multipath channels","multipath receiver structure","radio receivers","RAKE receiver","S-curve"],"language":[{"iso":"eng"}]}]