--- _id: '40088' author: - first_name: Katja full_name: Koch, Katja last_name: Koch - first_name: Frank full_name: Hellmich, Frank id: '26282' last_name: Hellmich citation: ama: 'Koch K, Hellmich F. Moderation des Symposiums „Förderung von Kindern mit Migrationshintergrund im Vor- und Grundschulbereich“. 20. Jahrestagung der Kommission “Grundschulforschung und Pädagogik der Primarstufe” der Deutschen Gesellschaft für Erziehungswissenschaft (DGfE, Sektion Schulpädagogik). In: ; 2011.' apa: Koch, K., & Hellmich, F. (2011). Moderation des Symposiums „Förderung von Kindern mit Migrationshintergrund im Vor- und Grundschulbereich“. 20. Jahrestagung der Kommission “Grundschulforschung und Pädagogik der Primarstufe” der Deutschen Gesellschaft für Erziehungswissenschaft (DGfE, Sektion Schulpädagogik). bibtex: '@inproceedings{Koch_Hellmich_2011, place={Paderborn}, title={Moderation des Symposiums „Förderung von Kindern mit Migrationshintergrund im Vor- und Grundschulbereich“. 20. Jahrestagung der Kommission “Grundschulforschung und Pädagogik der Primarstufe” der Deutschen Gesellschaft für Erziehungswissenschaft (DGfE, Sektion Schulpädagogik)}, author={Koch, Katja and Hellmich, Frank}, year={2011} }' chicago: Koch, Katja, and Frank Hellmich. “Moderation Des Symposiums „Förderung von Kindern Mit Migrationshintergrund Im Vor- Und Grundschulbereich“. 20. Jahrestagung Der Kommission ‘Grundschulforschung Und Pädagogik Der Primarstufe’ Der Deutschen Gesellschaft Für Erziehungswissenschaft (DGfE, Sektion Schulpädagogik).” Paderborn, 2011. ieee: K. Koch and F. Hellmich, “Moderation des Symposiums „Förderung von Kindern mit Migrationshintergrund im Vor- und Grundschulbereich“. 20. Jahrestagung der Kommission ‘Grundschulforschung und Pädagogik der Primarstufe’ der Deutschen Gesellschaft für Erziehungswissenschaft (DGfE, Sektion Schulpädagogik),” 2011. mla: Koch, Katja, and Frank Hellmich. Moderation Des Symposiums „Förderung von Kindern Mit Migrationshintergrund Im Vor- Und Grundschulbereich“. 20. Jahrestagung Der Kommission “Grundschulforschung Und Pädagogik Der Primarstufe” Der Deutschen Gesellschaft Für Erziehungswissenschaft (DGfE, Sektion Schulpädagogik). 2011. short: 'K. Koch, F. Hellmich, in: Paderborn, 2011.' date_created: 2023-01-25T17:07:20Z date_updated: 2023-01-26T09:36:49Z department: - _id: '460' language: - iso: eng place: Paderborn status: public title: Moderation des Symposiums „Förderung von Kindern mit Migrationshintergrund im Vor- und Grundschulbereich“. 20. Jahrestagung der Kommission "Grundschulforschung und Pädagogik der Primarstufe" der Deutschen Gesellschaft für Erziehungswissenschaft (DGfE, Sektion Schulpädagogik) type: conference user_id: '57672' year: '2011' ... --- _id: '38245' author: - first_name: Frank full_name: Hellmich, Frank id: '26282' last_name: Hellmich citation: ama: 'Hellmich F. (Mal-)Adaptives Lernverhalten von Grundschulkindern in Abhängigkeit ihrer impliziten Fähigkeitstheorien und Fähigkeitsselbstkonzepte. In: Universität Wuppertal; 2011.' apa: Hellmich, F. (2011). (Mal-)Adaptives Lernverhalten von Grundschulkindern in Abhängigkeit ihrer impliziten Fähigkeitstheorien und Fähigkeitsselbstkonzepte. bibtex: '@inproceedings{Hellmich_2011, place={Wuppertal}, title={(Mal-)Adaptives Lernverhalten von Grundschulkindern in Abhängigkeit ihrer impliziten Fähigkeitstheorien und Fähigkeitsselbstkonzepte}, publisher={Universität Wuppertal}, author={Hellmich, Frank}, year={2011} }' chicago: 'Hellmich, Frank. “(Mal-)Adaptives Lernverhalten von Grundschulkindern in Abhängigkeit Ihrer Impliziten Fähigkeitstheorien Und Fähigkeitsselbstkonzepte.” Wuppertal: Universität Wuppertal, 2011.' ieee: F. Hellmich, “(Mal-)Adaptives Lernverhalten von Grundschulkindern in Abhängigkeit ihrer impliziten Fähigkeitstheorien und Fähigkeitsselbstkonzepte,” 2011. mla: Hellmich, Frank. (Mal-)Adaptives Lernverhalten von Grundschulkindern in Abhängigkeit Ihrer Impliziten Fähigkeitstheorien Und Fähigkeitsselbstkonzepte. Universität Wuppertal, 2011. short: 'F. Hellmich, in: Universität Wuppertal, Wuppertal, 2011.' date_created: 2023-01-23T17:53:20Z date_updated: 2023-01-26T09:37:42Z department: - _id: '460' language: - iso: eng place: Wuppertal publisher: Universität Wuppertal status: public title: (Mal-)Adaptives Lernverhalten von Grundschulkindern in Abhängigkeit ihrer impliziten Fähigkeitstheorien und Fähigkeitsselbstkonzepte type: conference user_id: '57672' year: '2011' ... --- _id: '38247' author: - first_name: Frank full_name: Hellmich, Frank id: '26282' last_name: Hellmich citation: ama: 'Hellmich F. Implizite Fähigkeitstheorien, Fähigkeitsselbstkonzepte und (mal-)adaptives Lernverhalten bei Kindern im Grundschulalter. Vortrag auf der 75. Tagung der Arbeitsgruppe für Empirische Pädagogische Forschung (AEPF). In: ; 2011.' apa: Hellmich, F. (2011). Implizite Fähigkeitstheorien, Fähigkeitsselbstkonzepte und (mal-)adaptives Lernverhalten bei Kindern im Grundschulalter. Vortrag auf der 75. Tagung der Arbeitsgruppe für Empirische Pädagogische Forschung (AEPF). bibtex: '@inproceedings{Hellmich_2011, place={Bamberg}, title={Implizite Fähigkeitstheorien, Fähigkeitsselbstkonzepte und (mal-)adaptives Lernverhalten bei Kindern im Grundschulalter. Vortrag auf der 75. Tagung der Arbeitsgruppe für Empirische Pädagogische Forschung (AEPF)}, author={Hellmich, Frank}, year={2011} }' chicago: Hellmich, Frank. “Implizite Fähigkeitstheorien, Fähigkeitsselbstkonzepte Und (Mal-)Adaptives Lernverhalten Bei Kindern Im Grundschulalter. Vortrag Auf Der 75. Tagung Der Arbeitsgruppe Für Empirische Pädagogische Forschung (AEPF).” Bamberg, 2011. ieee: F. Hellmich, “Implizite Fähigkeitstheorien, Fähigkeitsselbstkonzepte und (mal-)adaptives Lernverhalten bei Kindern im Grundschulalter. Vortrag auf der 75. Tagung der Arbeitsgruppe für Empirische Pädagogische Forschung (AEPF),” 2011. mla: Hellmich, Frank. Implizite Fähigkeitstheorien, Fähigkeitsselbstkonzepte Und (Mal-)Adaptives Lernverhalten Bei Kindern Im Grundschulalter. Vortrag Auf Der 75. Tagung Der Arbeitsgruppe Für Empirische Pädagogische Forschung (AEPF). 2011. short: 'F. Hellmich, in: Bamberg, 2011.' date_created: 2023-01-23T17:54:48Z date_updated: 2023-01-26T09:37:28Z department: - _id: '460' language: - iso: eng place: Bamberg status: public title: Implizite Fähigkeitstheorien, Fähigkeitsselbstkonzepte und (mal-)adaptives Lernverhalten bei Kindern im Grundschulalter. Vortrag auf der 75. Tagung der Arbeitsgruppe für Empirische Pädagogische Forschung (AEPF) type: conference user_id: '57672' year: '2011' ... --- _id: '40339' author: - first_name: Nadine full_name: Wallmeier, Nadine id: '22403' last_name: Wallmeier citation: ama: 'Wallmeier N. [Sammelrezension:] Das Hamburger Ordeelbook von 1270 samt Schiffrecht. Nach der Handschrift von Fredericus Varendorp von 1493 (Kopenhagener Codex). Textausgabe und Übersetzung ins Hochdeutsche mit rechtsgeschichtlichem Kommentar. Hrsg. von Frank Eichler. Hamburg: Mauke; Das Hamburger Ordeelbook in der Erstfassung 1270. Rechtshistorische und sprachliche Rekonstruktion aus den vorhandenen Quellen. Hrsg. von Frank Eichler. Hamburg: Mauke 2007; Die Langenbeck’sche Glosse zum Hamburger Stadtrecht von 1497. Die vollständige Glossenhandschrift von Bartholdus Eggheman von 1532 sowie Lappenbergs Auszüge aus späteren Handschriften. Hrsg. und übersetzt von Frank Eichler. Mit Einführungen von Frank Eichler und Tilman Repgen. Hamburg: Mauke 2008. Niederdeutsches Jahrbuch. 2011;134:180-183.' apa: 'Wallmeier, N. (2011). [Sammelrezension:] Das Hamburger Ordeelbook von 1270 samt Schiffrecht. Nach der Handschrift von Fredericus Varendorp von 1493 (Kopenhagener Codex). Textausgabe und Übersetzung ins Hochdeutsche mit rechtsgeschichtlichem Kommentar. Hrsg. von Frank Eichler. Hamburg: Mauke; Das Hamburger Ordeelbook in der Erstfassung 1270. Rechtshistorische und sprachliche Rekonstruktion aus den vorhandenen Quellen. Hrsg. von Frank Eichler. Hamburg: Mauke 2007; Die Langenbeck’sche Glosse zum Hamburger Stadtrecht von 1497. Die vollständige Glossenhandschrift von Bartholdus Eggheman von 1532 sowie Lappenbergs Auszüge aus späteren Handschriften. Hrsg. und übersetzt von Frank Eichler. Mit Einführungen von Frank Eichler und Tilman Repgen. Hamburg: Mauke 2008. In Niederdeutsches Jahrbuch (Vol. 134, pp. 180–183).' bibtex: '@article{Wallmeier_2011, title={[Sammelrezension:] Das Hamburger Ordeelbook von 1270 samt Schiffrecht. Nach der Handschrift von Fredericus Varendorp von 1493 (Kopenhagener Codex). Textausgabe und Übersetzung ins Hochdeutsche mit rechtsgeschichtlichem Kommentar. Hrsg. von Frank Eichler. Hamburg: Mauke; Das Hamburger Ordeelbook in der Erstfassung 1270. Rechtshistorische und sprachliche Rekonstruktion aus den vorhandenen Quellen. Hrsg. von Frank Eichler. Hamburg: Mauke 2007; Die Langenbeck’sche Glosse zum Hamburger Stadtrecht von 1497. Die vollständige Glossenhandschrift von Bartholdus Eggheman von 1532 sowie Lappenbergs Auszüge aus späteren Handschriften. Hrsg. und übersetzt von Frank Eichler. Mit Einführungen von Frank Eichler und Tilman Repgen. Hamburg: Mauke 2008.}, volume={134}, journal={Niederdeutsches Jahrbuch}, author={Wallmeier, Nadine}, year={2011}, pages={180–183} }' chicago: 'Wallmeier, Nadine. “[Sammelrezension:] Das Hamburger Ordeelbook von 1270 Samt Schiffrecht. Nach Der Handschrift von Fredericus Varendorp von 1493 (Kopenhagener Codex). Textausgabe Und Übersetzung Ins Hochdeutsche Mit Rechtsgeschichtlichem Kommentar. Hrsg. von Frank Eichler. Hamburg: Mauke; Das Hamburger Ordeelbook in Der Erstfassung 1270. Rechtshistorische Und Sprachliche Rekonstruktion Aus Den Vorhandenen Quellen. Hrsg. von Frank Eichler. Hamburg: Mauke 2007; Die Langenbeck’sche Glosse Zum Hamburger Stadtrecht von 1497. Die Vollständige Glossenhandschrift von Bartholdus Eggheman von 1532 Sowie Lappenbergs Auszüge Aus Späteren Handschriften. Hrsg. Und Übersetzt von Frank Eichler. Mit Einführungen von Frank Eichler Und Tilman Repgen. Hamburg: Mauke 2008.” Niederdeutsches Jahrbuch, 2011.' ieee: 'N. Wallmeier, “[Sammelrezension:] Das Hamburger Ordeelbook von 1270 samt Schiffrecht. Nach der Handschrift von Fredericus Varendorp von 1493 (Kopenhagener Codex). Textausgabe und Übersetzung ins Hochdeutsche mit rechtsgeschichtlichem Kommentar. Hrsg. von Frank Eichler. Hamburg: Mauke; Das Hamburger Ordeelbook in der Erstfassung 1270. Rechtshistorische und sprachliche Rekonstruktion aus den vorhandenen Quellen. Hrsg. von Frank Eichler. Hamburg: Mauke 2007; Die Langenbeck’sche Glosse zum Hamburger Stadtrecht von 1497. Die vollständige Glossenhandschrift von Bartholdus Eggheman von 1532 sowie Lappenbergs Auszüge aus späteren Handschriften. Hrsg. und übersetzt von Frank Eichler. Mit Einführungen von Frank Eichler und Tilman Repgen. Hamburg: Mauke 2008.,” Niederdeutsches Jahrbuch, vol. 134. pp. 180–183, 2011.' mla: 'Wallmeier, Nadine. “[Sammelrezension:] Das Hamburger Ordeelbook von 1270 Samt Schiffrecht. Nach Der Handschrift von Fredericus Varendorp von 1493 (Kopenhagener Codex). Textausgabe Und Übersetzung Ins Hochdeutsche Mit Rechtsgeschichtlichem Kommentar. Hrsg. von Frank Eichler. Hamburg: Mauke; Das Hamburger Ordeelbook in Der Erstfassung 1270. Rechtshistorische Und Sprachliche Rekonstruktion Aus Den Vorhandenen Quellen. Hrsg. von Frank Eichler. Hamburg: Mauke 2007; Die Langenbeck’sche Glosse Zum Hamburger Stadtrecht von 1497. Die Vollständige Glossenhandschrift von Bartholdus Eggheman von 1532 Sowie Lappenbergs Auszüge Aus Späteren Handschriften. Hrsg. Und Übersetzt von Frank Eichler. Mit Einführungen von Frank Eichler Und Tilman Repgen. Hamburg: Mauke 2008.” Niederdeutsches Jahrbuch, vol. 134, 2011, pp. 180–83.' short: N. Wallmeier, Niederdeutsches Jahrbuch 134 (2011) 180–183. date_created: 2023-01-26T11:42:01Z date_updated: 2023-01-26T11:42:21Z intvolume: ' 134' language: - iso: eng page: 180-183 publication: Niederdeutsches Jahrbuch status: public title: '[Sammelrezension:] Das Hamburger Ordeelbook von 1270 samt Schiffrecht. Nach der Handschrift von Fredericus Varendorp von 1493 (Kopenhagener Codex). Textausgabe und Übersetzung ins Hochdeutsche mit rechtsgeschichtlichem Kommentar. Hrsg. von Frank Eichler. Hamburg: Mauke; Das Hamburger Ordeelbook in der Erstfassung 1270. Rechtshistorische und sprachliche Rekonstruktion aus den vorhandenen Quellen. Hrsg. von Frank Eichler. Hamburg: Mauke 2007; Die Langenbeck’sche Glosse zum Hamburger Stadtrecht von 1497. Die vollständige Glossenhandschrift von Bartholdus Eggheman von 1532 sowie Lappenbergs Auszüge aus späteren Handschriften. Hrsg. und übersetzt von Frank Eichler. Mit Einführungen von Frank Eichler und Tilman Repgen. Hamburg: Mauke 2008.' type: review user_id: '22403' volume: 134 year: '2011' ... --- _id: '40343' author: - first_name: Nadine full_name: Wallmeier, Nadine id: '22403' last_name: Wallmeier citation: ama: 'Wallmeier N. Mihm, Magret / Mihm, Arend: Mittelalterliche Stadtrechnungen im historischen Prozess. Die älteste Duisburger Überlieferung (1348-1449). Band 1: Untersuchungen und Texte. Köln, Weimar, Wien: Böhlau  2007. Band 2: Register, Materialien, Glossar. Köln, Weimar, Wien: Böhlau 2007. Daphnis. 2011;40:723-725.' apa: 'Wallmeier, N. (2011). Mihm, Magret / Mihm, Arend: Mittelalterliche Stadtrechnungen im historischen Prozess. Die älteste Duisburger Überlieferung (1348-1449). Band 1: Untersuchungen und Texte. Köln, Weimar, Wien: Böhlau  2007. Band 2: Register, Materialien, Glossar. Köln, Weimar, Wien: Böhlau 2007. In Daphnis (Vol. 40, pp. 723–725).' bibtex: '@article{Wallmeier_2011, title={Mihm, Magret / Mihm, Arend: Mittelalterliche Stadtrechnungen im historischen Prozess. Die älteste Duisburger Überlieferung (1348-1449). Band 1: Untersuchungen und Texte. Köln, Weimar, Wien: Böhlau  2007. Band 2: Register, Materialien, Glossar. Köln, Weimar, Wien: Böhlau 2007}, volume={40}, journal={Daphnis}, author={Wallmeier, Nadine}, year={2011}, pages={723–725} }' chicago: 'Wallmeier, Nadine. “Mihm, Magret / Mihm, Arend: Mittelalterliche Stadtrechnungen im historischen Prozess. Die älteste Duisburger Überlieferung (1348-1449). Band 1: Untersuchungen und Texte. Köln, Weimar, Wien: Böhlau  2007. Band 2: Register, Materialien, Glossar. Köln, Weimar, Wien: Böhlau 2007.” Daphnis, 2011.' ieee: 'N. Wallmeier, “Mihm, Magret / Mihm, Arend: Mittelalterliche Stadtrechnungen im historischen Prozess. Die älteste Duisburger Überlieferung (1348-1449). Band 1: Untersuchungen und Texte. Köln, Weimar, Wien: Böhlau  2007. Band 2: Register, Materialien, Glossar. Köln, Weimar, Wien: Böhlau 2007,” Daphnis, vol. 40. pp. 723–725, 2011.' mla: 'Wallmeier, Nadine. “Mihm, Magret / Mihm, Arend: Mittelalterliche Stadtrechnungen im historischen Prozess. Die älteste Duisburger Überlieferung (1348-1449). Band 1: Untersuchungen und Texte. Köln, Weimar, Wien: Böhlau  2007. Band 2: Register, Materialien, Glossar. Köln, Weimar, Wien: Böhlau 2007.” Daphnis, vol. 40, 2011, pp. 723–25.' short: N. Wallmeier, Daphnis 40 (2011) 723–725. date_created: 2023-01-26T11:48:22Z date_updated: 2023-01-26T11:48:31Z intvolume: ' 40' language: - iso: ger page: 723-725 publication: Daphnis status: public title: 'Mihm, Magret / Mihm, Arend: Mittelalterliche Stadtrechnungen im historischen Prozess. Die älteste Duisburger Überlieferung (1348-1449). Band 1: Untersuchungen und Texte. Köln, Weimar, Wien: Böhlau 2007. Band 2: Register, Materialien, Glossar. Köln, Weimar, Wien: Böhlau 2007' type: review user_id: '22403' volume: 40 year: '2011' ... --- _id: '40073' author: - first_name: Tomasz full_name: Luks, Tomasz id: '58312' last_name: Luks citation: ama: Luks T. Hardy spaces for the Laplacian with lower order perturbations. Studia Mathematica. 2011;204(1):39-62. doi:10.4064/sm204-1-3 apa: Luks, T. (2011). Hardy spaces for the Laplacian with lower order perturbations. Studia Mathematica, 204(1), 39–62. https://doi.org/10.4064/sm204-1-3 bibtex: '@article{Luks_2011, title={Hardy spaces for the Laplacian with lower order perturbations}, volume={204}, DOI={10.4064/sm204-1-3}, number={1}, journal={Studia Mathematica}, publisher={Institute of Mathematics, Polish Academy of Sciences}, author={Luks, Tomasz}, year={2011}, pages={39–62} }' chicago: 'Luks, Tomasz. “Hardy Spaces for the Laplacian with Lower Order Perturbations.” Studia Mathematica 204, no. 1 (2011): 39–62. https://doi.org/10.4064/sm204-1-3.' ieee: 'T. Luks, “Hardy spaces for the Laplacian with lower order perturbations,” Studia Mathematica, vol. 204, no. 1, pp. 39–62, 2011, doi: 10.4064/sm204-1-3.' mla: Luks, Tomasz. “Hardy Spaces for the Laplacian with Lower Order Perturbations.” Studia Mathematica, vol. 204, no. 1, Institute of Mathematics, Polish Academy of Sciences, 2011, pp. 39–62, doi:10.4064/sm204-1-3. short: T. Luks, Studia Mathematica 204 (2011) 39–62. date_created: 2023-01-25T15:52:13Z date_updated: 2023-01-26T17:21:25Z department: - _id: '555' doi: 10.4064/sm204-1-3 extern: '1' intvolume: ' 204' issue: '1' language: - iso: eng page: 39-62 publication: Studia Mathematica publication_identifier: issn: - 0039-3223 - 1730-6337 publication_status: published publisher: Institute of Mathematics, Polish Academy of Sciences status: public title: Hardy spaces for the Laplacian with lower order perturbations type: journal_article user_id: '58312' volume: 204 year: '2011' ... --- _id: '40835' abstract: - lang: eng text: This work addresses the problem of deciding whether a set of realizations of a vector-valued time series with unknown temporal correlation are spatially correlated or not. Specifically, the spatial correlation is induced by a colored source over a frequency-flat single-input multiple-output (SIMO) channel distorted by independent and identically distributed noises with temporal correlation. The generalized likelihood ratio test (GLRT) for this detection problem does not have a closed-form expression and we have to resort to numerical optimization techniques. In particular, we apply the successive convex approximations approach which relies on solving a series of convex problems that approximate the original (non-convex) one. The proposed solution resembles a power method for obtaining the dominant eigenvector of a matrix, which changes over iterations. Finally, the performance of the proposed detector is illustrated by means of computer simulations showing a great improvement over previously proposed detectors that do not fully exploit the temporal structure of the source. author: - first_name: D. full_name: Ramírez, D. last_name: Ramírez - first_name: J. full_name: Vía, J. last_name: Vía - first_name: I. full_name: Santamaría, I. last_name: Santamaría - first_name: L. L. full_name: Scharf, L. L. last_name: Scharf citation: ama: 'Ramírez D, Vía J, Santamaría I, Scharf LL. Multiple-Channel Detection of a Gaussian Time Series over Frequency-Flat Channels. In: Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process. ; 2011. doi:10.1109/ICASSP.2011.5947194' apa: Ramírez, D., Vía, J., Santamaría, I., & Scharf, L. L. (2011). Multiple-Channel Detection of a Gaussian Time Series over Frequency-Flat Channels. Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process. https://doi.org/10.1109/ICASSP.2011.5947194 bibtex: '@inproceedings{Ramírez_Vía_Santamaría_Scharf_2011, place={Prague, Czech Republic}, title={Multiple-Channel Detection of a Gaussian Time Series over Frequency-Flat Channels}, DOI={10.1109/ICASSP.2011.5947194}, booktitle={Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process.}, author={Ramírez, D. and Vía, J. and Santamaría, I. and Scharf, L. L.}, year={2011} }' chicago: Ramírez, D., J. Vía, I. Santamaría, and L. L. Scharf. “Multiple-Channel Detection of a Gaussian Time Series over Frequency-Flat Channels.” In Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process. Prague, Czech Republic, 2011. https://doi.org/10.1109/ICASSP.2011.5947194. ieee: 'D. Ramírez, J. Vía, I. Santamaría, and L. L. Scharf, “Multiple-Channel Detection of a Gaussian Time Series over Frequency-Flat Channels,” 2011, doi: 10.1109/ICASSP.2011.5947194.' mla: Ramírez, D., et al. “Multiple-Channel Detection of a Gaussian Time Series over Frequency-Flat Channels.” Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process., 2011, doi:10.1109/ICASSP.2011.5947194. short: 'D. Ramírez, J. Vía, I. Santamaría, L.L. Scharf, in: Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process., Prague, Czech Republic, 2011.' date_created: 2023-01-30T11:51:59Z date_updated: 2023-01-30T11:56:29Z department: - _id: '263' doi: 10.1109/ICASSP.2011.5947194 place: Prague, Czech Republic publication: Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process. status: public title: Multiple-Channel Detection of a Gaussian Time Series over Frequency-Flat Channels type: conference user_id: '43497' year: '2011' ... --- _id: '40834' abstract: - lang: eng text: Spectrum sensing is a challenging key component of the Cognitive Radio paradigm, since primary signals must be detected in the face of noise uncertainty and at signal-to-noise ratios (SNRs) well below decodability levels. Multiantenna detectors exploit spatial independence of receiver thermal noise to boost detection performance and robustness. Here, we study the problem of detecting Gaussian signals with unknown rank-$P$ spatial covariance matrix when the noise at the receiver is independent across the antennas and with unknown power. A generic diagonal noise covariance matrix is allowed to model calibration uncertainties in the different antenna frontends. We derive the generalized likelihood ratio test (GLRT) for this detection problem. Although, in general, the corresponding statistic must be obtained by numerical means, in the low SNR regime the GLRT does admit a closed form. Numerical simulations show that the proposed asymptotic detector offers good performance even for moderate SNR values. author: - first_name: D. full_name: Ramírez, D. last_name: Ramírez - first_name: G. full_name: Vazquez-Vilar, G. last_name: Vazquez-Vilar - first_name: R. full_name: López-Valcarce, R. last_name: López-Valcarce - first_name: J. full_name: Vía, J. last_name: Vía - first_name: I. full_name: Santamaría, I. last_name: Santamaría citation: ama: 'Ramírez D, Vazquez-Vilar G, López-Valcarce R, Vía J, Santamaría I. Multiantenna detection under noise uncertainty and primary user’s spatial structure. In: Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process. ; 2011. doi:10.1109/ICASSP.2011.5946275' apa: Ramírez, D., Vazquez-Vilar, G., López-Valcarce, R., Vía, J., & Santamaría, I. (2011). Multiantenna detection under noise uncertainty and primary user’s spatial structure. Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process. https://doi.org/10.1109/ICASSP.2011.5946275 bibtex: '@inproceedings{Ramírez_Vazquez-Vilar_López-Valcarce_Vía_Santamaría_2011, place={Prague, Czech Republic}, title={Multiantenna detection under noise uncertainty and primary user’s spatial structure}, DOI={10.1109/ICASSP.2011.5946275}, booktitle={Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process.}, author={Ramírez, D. and Vazquez-Vilar, G. and López-Valcarce, R. and Vía, J. and Santamaría, I.}, year={2011} }' chicago: Ramírez, D., G. Vazquez-Vilar, R. López-Valcarce, J. Vía, and I. Santamaría. “Multiantenna Detection under Noise Uncertainty and Primary User’s Spatial Structure.” In Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process. Prague, Czech Republic, 2011. https://doi.org/10.1109/ICASSP.2011.5946275. ieee: 'D. Ramírez, G. Vazquez-Vilar, R. López-Valcarce, J. Vía, and I. Santamaría, “Multiantenna detection under noise uncertainty and primary user’s spatial structure,” 2011, doi: 10.1109/ICASSP.2011.5946275.' mla: Ramírez, D., et al. “Multiantenna Detection under Noise Uncertainty and Primary User’s Spatial Structure.” Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process., 2011, doi:10.1109/ICASSP.2011.5946275. short: 'D. Ramírez, G. Vazquez-Vilar, R. López-Valcarce, J. Vía, I. Santamaría, in: Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process., Prague, Czech Republic, 2011.' date_created: 2023-01-30T11:51:59Z date_updated: 2023-01-30T11:56:31Z department: - _id: '263' doi: 10.1109/ICASSP.2011.5946275 place: Prague, Czech Republic publication: Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process. status: public title: Multiantenna detection under noise uncertainty and primary user’s spatial structure type: conference user_id: '43497' year: '2011' ... --- _id: '40833' abstract: - lang: eng text: In this work, we derive a maximum likelihood formula for beamsteering in a multi-sensor array. The novelty of the work is that the impinging signal and noises are wide sense stationary (WSS) time series with unknown power spectral densities, unlike in previous work that typically considers white signals. Our approach naturally provides a way of fusing frequency-dependent information to obtain a broadband beamformer. In order to obtain the compressed likelihood, it is necessary to find the maximum likelihood estimates of the unknown parameters. However, this problem turns out to be an ML estimation of a block-Toeplitz matrix, which does not have a closed-form solution. To overcome this problem, we derive the asymptotic likelihood, which is given in the frequency domain. Finally, some simulation results are presented to illustrate the performance of the proposed technique. In these simulations, it is shown that our approach presents the best results. author: - first_name: D. full_name: Ramírez, D. last_name: Ramírez - first_name: J. full_name: Vía, J. last_name: Vía - first_name: I. full_name: Santamaría, I. last_name: Santamaría - first_name: L. L. full_name: Scharf, L. L. last_name: Scharf citation: ama: 'Ramírez D, Vía J, Santamaría I, Scharf LL. Multi-Sensor Beamsteering Based on the Asymptotic Likelihood for Colored Signals. In: Proc.\ IEEE Work.\ Stat.\ Signal Process. ; 2011. doi:10.1109/SSP.2011.5967644' apa: Ramírez, D., Vía, J., Santamaría, I., & Scharf, L. L. (2011). Multi-Sensor Beamsteering Based on the Asymptotic Likelihood for Colored Signals. Proc.\ IEEE Work.\ Stat.\ Signal Process. https://doi.org/10.1109/SSP.2011.5967644 bibtex: '@inproceedings{Ramírez_Vía_Santamaría_Scharf_2011, place={Nice, France}, title={Multi-Sensor Beamsteering Based on the Asymptotic Likelihood for Colored Signals}, DOI={10.1109/SSP.2011.5967644}, booktitle={Proc.\ IEEE Work.\ Stat.\ Signal Process.}, author={Ramírez, D. and Vía, J. and Santamaría, I. and Scharf, L. L.}, year={2011} }' chicago: Ramírez, D., J. Vía, I. Santamaría, and L. L. Scharf. “Multi-Sensor Beamsteering Based on the Asymptotic Likelihood for Colored Signals.” In Proc.\ IEEE Work.\ Stat.\ Signal Process. Nice, France, 2011. https://doi.org/10.1109/SSP.2011.5967644. ieee: 'D. Ramírez, J. Vía, I. Santamaría, and L. L. Scharf, “Multi-Sensor Beamsteering Based on the Asymptotic Likelihood for Colored Signals,” 2011, doi: 10.1109/SSP.2011.5967644.' mla: Ramírez, D., et al. “Multi-Sensor Beamsteering Based on the Asymptotic Likelihood for Colored Signals.” Proc.\ IEEE Work.\ Stat.\ Signal Process., 2011, doi:10.1109/SSP.2011.5967644. short: 'D. Ramírez, J. Vía, I. Santamaría, L.L. Scharf, in: Proc.\ IEEE Work.\ Stat.\ Signal Process., Nice, France, 2011.' date_created: 2023-01-30T11:51:59Z date_updated: 2023-01-30T11:56:26Z department: - _id: '263' doi: 10.1109/SSP.2011.5967644 place: Nice, France publication: Proc.\ IEEE Work.\ Stat.\ Signal Process. status: public title: Multi-Sensor Beamsteering Based on the Asymptotic Likelihood for Colored Signals type: conference user_id: '43497' year: '2011' ... --- _id: '40836' abstract: - lang: eng text: In this paper we study the multiple-input multiple-output two-way relay channel (MIMO-TWRC) when the nodes use analog beamforming. Following the amplify-and-forward (AF) strategy, the problem consists of finding the transmit and receive beamformers of the nodes and the relay, and the power allocated to each one, that achieve the boundary of the capacity region. We express the optimal node beamformers in terms of the relay beamformers, and show that the capacity region can be efficiently characterized using convex optimization techniques. Numerical examples are provided to illustrate the results of this paper, and to compare the capacity region achieved by analog beamforming against the conventional MIMO schemes that operate at the baseband. author: - first_name: Christian full_name: Lameiro, Christian last_name: Lameiro - first_name: Alfredo full_name: Nazábal, Alfredo last_name: Nazábal - first_name: Fouad full_name: Gholam, Fouad last_name: Gholam - first_name: Javier full_name: Vía, Javier last_name: Vía - first_name: Ignacio full_name: Santamaría, Ignacio last_name: Santamaría citation: ama: 'Lameiro C, Nazábal A, Gholam F, Vía J, Santamaría I. Capacity Region of the Two-Way Multi-Antenna Relay Channel with Analog Tx-Rx Beamforming. In: Proc. Int. ICST Conf. Mobile Lightweight Wireless Syst. ; 2011. doi:10.1007/978-3-642-29479-2_1' apa: Lameiro, C., Nazábal, A., Gholam, F., Vía, J., & Santamaría, I. (2011). Capacity Region of the Two-Way Multi-Antenna Relay Channel with Analog Tx-Rx Beamforming. Proc. Int. ICST Conf. Mobile Lightweight Wireless Syst. https://doi.org/10.1007/978-3-642-29479-2_1 bibtex: '@inproceedings{Lameiro_Nazábal_Gholam_Vía_Santamaría_2011, place={Bilbao, Spain}, title={Capacity Region of the Two-Way Multi-Antenna Relay Channel with Analog Tx-Rx Beamforming}, DOI={10.1007/978-3-642-29479-2_1}, booktitle={Proc. Int. ICST Conf. Mobile Lightweight Wireless Syst.}, author={Lameiro, Christian and Nazábal, Alfredo and Gholam, Fouad and Vía, Javier and Santamaría, Ignacio}, year={2011} }' chicago: Lameiro, Christian, Alfredo Nazábal, Fouad Gholam, Javier Vía, and Ignacio Santamaría. “Capacity Region of the Two-Way Multi-Antenna Relay Channel with Analog Tx-Rx Beamforming.” In Proc. Int. ICST Conf. Mobile Lightweight Wireless Syst. Bilbao, Spain, 2011. https://doi.org/10.1007/978-3-642-29479-2_1. ieee: 'C. Lameiro, A. Nazábal, F. Gholam, J. Vía, and I. Santamaría, “Capacity Region of the Two-Way Multi-Antenna Relay Channel with Analog Tx-Rx Beamforming,” 2011, doi: 10.1007/978-3-642-29479-2_1.' mla: Lameiro, Christian, et al. “Capacity Region of the Two-Way Multi-Antenna Relay Channel with Analog Tx-Rx Beamforming.” Proc. Int. ICST Conf. Mobile Lightweight Wireless Syst., 2011, doi:10.1007/978-3-642-29479-2_1. short: 'C. Lameiro, A. Nazábal, F. Gholam, J. Vía, I. Santamaría, in: Proc. Int. ICST Conf. Mobile Lightweight Wireless Syst., Bilbao, Spain, 2011.' date_created: 2023-01-30T11:51:59Z date_updated: 2023-01-30T11:56:24Z department: - _id: '263' doi: 10.1007/978-3-642-29479-2_1 place: Bilbao, Spain publication: Proc. Int. ICST Conf. Mobile Lightweight Wireless Syst. status: public title: Capacity Region of the Two-Way Multi-Antenna Relay Channel with Analog Tx-Rx Beamforming type: conference user_id: '43497' year: '2011' ... --- _id: '40828' abstract: - lang: eng text: Spectrum sensing is a key component of the Cognitive Radio paradigm. Multiantenna detectors can exploit different spatial features of primary signals in order to boost detection performance and robustness in very low signal-to-noise ratios. However, in several cases these detectors require additional information, such as the rank of the spatial covariance matrix of the received signal. In this work we study the problem of estimating this rank under Gaussianity assumption using an uncalibrated receiver, i.e. with different (unknown) noise levels at each of the antennas. author: - first_name: G. full_name: Vazquez-Vilar, G. last_name: Vazquez-Vilar - first_name: D. full_name: Ramírez, D. last_name: Ramírez - first_name: R. full_name: López-Valcarce, R. last_name: López-Valcarce - first_name: J. full_name: Vía, J. last_name: Vía - first_name: I. full_name: Santamaría, I. last_name: Santamaría citation: ama: 'Vazquez-Vilar G, Ramírez D, López-Valcarce R, Vía J, Santamaría I. Spatial rank estimation in Cognitive Radio Networks with uncalibrated multiple antennas (invited paper). In: Proc. Int. Conf. on Cognitive Radio and Advanced Spectrum Management. ; 2011. doi:10.1145/2093256.2093291' apa: Vazquez-Vilar, G., Ramírez, D., López-Valcarce, R., Vía, J., & Santamaría, I. (2011). Spatial rank estimation in Cognitive Radio Networks with uncalibrated multiple antennas (invited paper). Proc. Int. Conf. on Cognitive Radio and Advanced Spectrum Management. https://doi.org/10.1145/2093256.2093291 bibtex: '@inproceedings{Vazquez-Vilar_Ramírez_López-Valcarce_Vía_Santamaría_2011, place={Barcelona, Spain}, title={Spatial rank estimation in Cognitive Radio Networks with uncalibrated multiple antennas (invited paper)}, DOI={10.1145/2093256.2093291}, booktitle={Proc. Int. Conf. on Cognitive Radio and Advanced Spectrum Management}, author={Vazquez-Vilar, G. and Ramírez, D. and López-Valcarce, R. and Vía, J. and Santamaría, I.}, year={2011} }' chicago: Vazquez-Vilar, G., D. Ramírez, R. López-Valcarce, J. Vía, and I. Santamaría. “Spatial Rank Estimation in Cognitive Radio Networks with Uncalibrated Multiple Antennas (Invited Paper).” In Proc. Int. Conf. on Cognitive Radio and Advanced Spectrum Management. Barcelona, Spain, 2011. https://doi.org/10.1145/2093256.2093291. ieee: 'G. Vazquez-Vilar, D. Ramírez, R. López-Valcarce, J. Vía, and I. Santamaría, “Spatial rank estimation in Cognitive Radio Networks with uncalibrated multiple antennas (invited paper),” 2011, doi: 10.1145/2093256.2093291.' mla: Vazquez-Vilar, G., et al. “Spatial Rank Estimation in Cognitive Radio Networks with Uncalibrated Multiple Antennas (Invited Paper).” Proc. Int. Conf. on Cognitive Radio and Advanced Spectrum Management, 2011, doi:10.1145/2093256.2093291. short: 'G. Vazquez-Vilar, D. Ramírez, R. López-Valcarce, J. Vía, I. Santamaría, in: Proc. Int. Conf. on Cognitive Radio and Advanced Spectrum Management, Barcelona, Spain, 2011.' date_created: 2023-01-30T11:51:58Z date_updated: 2023-01-30T11:56:20Z department: - _id: '263' doi: 10.1145/2093256.2093291 place: Barcelona, Spain publication: Proc. Int. Conf. on Cognitive Radio and Advanced Spectrum Management status: public title: Spatial rank estimation in Cognitive Radio Networks with uncalibrated multiple antennas (invited paper) type: conference user_id: '43497' year: '2011' ... --- _id: '40837' abstract: - lang: eng text: This paper considers linear precoding for time-varying multiple input multiple-output (MIMO) channels. We show that linear minimum mean-squared error (LMMSE) equalization based on the conjugate gradient (CG) method can result in significantly reduced complexity compared with conventional approaches. This reduction is achieved by incorporating a condition number constraint into the precoder optimization framework, which leads to clustered eigen values of the measurement covariance matrix. The cost is a small increase in MSE compared to the optimal precoder. author: - first_name: Jun full_name: Tong, Jun last_name: Tong - first_name: Peter J. full_name: Schreier, Peter J. last_name: Schreier - first_name: Steven R. full_name: Weller, Steven R. last_name: Weller - first_name: Louis L. full_name: Scharf, Louis L. last_name: Scharf citation: ama: 'Tong J, Schreier PJ, Weller SR, Scharf LL. Linear precoding for time-varying MIMO channels with low-complexity receivers. In: Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process. ; 2011:3092–3095. doi:10.1109/ICASSP.2011.5946312' apa: Tong, J., Schreier, P. J., Weller, S. R., & Scharf, L. L. (2011). Linear precoding for time-varying MIMO channels with low-complexity receivers. Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process., 3092–3095. https://doi.org/10.1109/ICASSP.2011.5946312 bibtex: '@inproceedings{Tong_Schreier_Weller_Scharf_2011, title={Linear precoding for time-varying MIMO channels with low-complexity receivers}, DOI={10.1109/ICASSP.2011.5946312}, booktitle={Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process.}, author={Tong, Jun and Schreier, Peter J. and Weller, Steven R. and Scharf, Louis L.}, year={2011}, pages={3092–3095} }' chicago: Tong, Jun, Peter J. Schreier, Steven R. Weller, and Louis L. Scharf. “Linear Precoding for Time-Varying MIMO Channels with Low-Complexity Receivers.” In Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process., 3092–3095, 2011. https://doi.org/10.1109/ICASSP.2011.5946312. ieee: 'J. Tong, P. J. Schreier, S. R. Weller, and L. L. Scharf, “Linear precoding for time-varying MIMO channels with low-complexity receivers,” in Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process., 2011, pp. 3092–3095, doi: 10.1109/ICASSP.2011.5946312.' mla: Tong, Jun, et al. “Linear Precoding for Time-Varying MIMO Channels with Low-Complexity Receivers.” Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process., 2011, pp. 3092–3095, doi:10.1109/ICASSP.2011.5946312. short: 'J. Tong, P.J. Schreier, S.R. Weller, L.L. Scharf, in: Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process., 2011, pp. 3092–3095.' date_created: 2023-01-30T11:51:59Z date_updated: 2023-01-30T11:56:22Z department: - _id: '263' doi: 10.1109/ICASSP.2011.5946312 page: 3092–3095 publication: Proc.\ IEEE Int.\ Conf.\ Acoustics, Speech and Signal Process. status: public title: Linear precoding for time-varying MIMO channels with low-complexity receivers type: conference user_id: '43497' year: '2011' ... --- _id: '40830' abstract: - lang: eng text: Interference Alignment (IA) has been revealed as one of the most attractive transmission techniques for the K-user in- terference channel. In this work, we employ a multiuser Multiple-Input Multiple-Output (MIMO) testbed to analyze, in realistic indoor scenarios, the impact of channel state information errors on the sum-rate performance of IA. We restrict our study to a 3-user interference network in which each user transmits a single data stream using two transmit and two receive antennas. For this MIMO interference network, only two different IA solutions exist. We also evaluate the performance gain obtained in practice by using the IA solution that maximizes the sum-rate. author: - first_name: J. A. full_name: García-Naya, J. A. last_name: García-Naya - first_name: L. full_name: Castedo, L. last_name: Castedo - first_name: D. full_name: Ramírez, D. last_name: Ramírez - first_name: I. full_name: Santamaría, I. last_name: Santamaría citation: ama: 'García-Naya JA, Castedo L, Ramírez D, Santamaría I. Experimental Evaluation of Interference Alignment Under Imperfect Channel State Information. In: Proc.\ Eur.\ Signal Process.\ Conf. ; 2011.' apa: García-Naya, J. A., Castedo, L., Ramírez, D., & Santamaría, I. (2011). Experimental Evaluation of Interference Alignment Under Imperfect Channel State Information. Proc.\ Eur.\ Signal Process.\ Conf. bibtex: '@inproceedings{García-Naya_Castedo_Ramírez_Santamaría_2011, place={Barcelona, Spain}, title={Experimental Evaluation of Interference Alignment Under Imperfect Channel State Information}, booktitle={Proc.\ Eur.\ Signal Process.\ Conf.}, author={García-Naya, J. A. and Castedo, L. and Ramírez, D. and Santamaría, I.}, year={2011} }' chicago: García-Naya, J. A., L. Castedo, D. Ramírez, and I. Santamaría. “Experimental Evaluation of Interference Alignment Under Imperfect Channel State Information.” In Proc.\ Eur.\ Signal Process.\ Conf. Barcelona, Spain, 2011. ieee: J. A. García-Naya, L. Castedo, D. Ramírez, and I. Santamaría, “Experimental Evaluation of Interference Alignment Under Imperfect Channel State Information,” 2011. mla: García-Naya, J. A., et al. “Experimental Evaluation of Interference Alignment Under Imperfect Channel State Information.” Proc.\ Eur.\ Signal Process.\ Conf., 2011. short: 'J.A. García-Naya, L. Castedo, D. Ramírez, I. Santamaría, in: Proc.\ Eur.\ Signal Process.\ Conf., Barcelona, Spain, 2011.' date_created: 2023-01-30T11:51:58Z date_updated: 2023-01-30T11:56:17Z department: - _id: '263' place: Barcelona, Spain publication: Proc.\ Eur.\ Signal Process.\ Conf. status: public title: Experimental Evaluation of Interference Alignment Under Imperfect Channel State Information type: conference user_id: '43497' year: '2011' ... --- _id: '40832' abstract: - lang: eng text: This paper studies the design and analysis of large multiple-input multiple-output (MIMO) systems with linear precoding and Krylov subspace receivers. We design precoders that can improve performance with low-rank receivers. We then introduce a tool based on potential theory to analyze the convergence behavior of the mean-squared error (MSE). The effectiveness of the proposed precoder and the superexponential convergence of the MSE are demonstrated1. author: - first_name: Jun full_name: Tong, Jun last_name: Tong - first_name: Peter J. full_name: Schreier, Peter J. last_name: Schreier - first_name: Steven R. full_name: Weller, Steven R. last_name: Weller citation: ama: 'Tong J, Schreier PJ, Weller SR. Precoder design and convergence analysis of MIMO systems with Krylov subspace receivers. In: Proc.\ IEEE Int.\ Symp.\ Inform.\ Theory. ; 2011:2914–2918. doi:10.1109/ISIT.2011.6034110' apa: Tong, J., Schreier, P. J., & Weller, S. R. (2011). Precoder design and convergence analysis of MIMO systems with Krylov subspace receivers. Proc.\ IEEE Int.\ Symp.\ Inform.\ Theory, 2914–2918. https://doi.org/10.1109/ISIT.2011.6034110 bibtex: '@inproceedings{Tong_Schreier_Weller_2011, title={Precoder design and convergence analysis of MIMO systems with Krylov subspace receivers}, DOI={10.1109/ISIT.2011.6034110}, booktitle={Proc.\ IEEE Int.\ Symp.\ Inform.\ Theory}, author={Tong, Jun and Schreier, Peter J. and Weller, Steven R.}, year={2011}, pages={2914–2918} }' chicago: Tong, Jun, Peter J. Schreier, and Steven R. Weller. “Precoder Design and Convergence Analysis of MIMO Systems with Krylov Subspace Receivers.” In Proc.\ IEEE Int.\ Symp.\ Inform.\ Theory, 2914–2918, 2011. https://doi.org/10.1109/ISIT.2011.6034110. ieee: 'J. Tong, P. J. Schreier, and S. R. Weller, “Precoder design and convergence analysis of MIMO systems with Krylov subspace receivers,” in Proc.\ IEEE Int.\ Symp.\ Inform.\ Theory, 2011, pp. 2914–2918, doi: 10.1109/ISIT.2011.6034110.' mla: Tong, Jun, et al. “Precoder Design and Convergence Analysis of MIMO Systems with Krylov Subspace Receivers.” Proc.\ IEEE Int.\ Symp.\ Inform.\ Theory, 2011, pp. 2914–2918, doi:10.1109/ISIT.2011.6034110. short: 'J. Tong, P.J. Schreier, S.R. Weller, in: Proc.\ IEEE Int.\ Symp.\ Inform.\ Theory, 2011, pp. 2914–2918.' date_created: 2023-01-30T11:51:59Z date_updated: 2023-01-30T11:56:33Z department: - _id: '263' doi: 10.1109/ISIT.2011.6034110 page: 2914–2918 publication: Proc.\ IEEE Int.\ Symp.\ Inform.\ Theory status: public title: Precoder design and convergence analysis of MIMO systems with Krylov subspace receivers type: conference user_id: '43497' year: '2011' ... --- _id: '40831' abstract: - lang: eng text: Spectrum sensing is a key component of the Cognitive Radio paradigm. Primary signals are typically detected with uncalibrated receivers at signal-to-noise ratios (SNRs) well below decodability levels. Multiantenna detectors exploit spatial independence of receiver thermal noise to boost detection performance and robustness. We study the problem of detecting a Gaussian signal with rank-$P$ unknown spatial covariance matrix in spatially uncorrelated Gaussian noise with unknown covariance using multiple antennas. The generalized likelihood ratio test (GLRT) is derived for two scenarios. In the first one, the noises at all antennas are assumed to have the same (unknown) variance, whereas in the second, a generic diagonal noise covariance matrix is allowed in order to accommodate calibration uncertainties in the different antenna frontends. In the latter case, the GLRT statistic must be obtained numerically, for which an efficient method is presented. Furthermore, for asymptotically low SNR, it is shown that the GLRT does admit a closed form, and the resulting detector performs well in practice. Extensions are presented in order to account for unknown temporal correlation in both signal and noise, as well as frequency-selective channels. author: - first_name: D. full_name: Ramírez, D. last_name: Ramírez - first_name: G. full_name: Vazquez-Vilar, G. last_name: Vazquez-Vilar - first_name: R. full_name: López-Valcarce, R. last_name: López-Valcarce - first_name: J. full_name: Vía, J. last_name: Vía - first_name: I. full_name: Santamaría, I. last_name: Santamaría citation: ama: Ramírez D, Vazquez-Vilar G, López-Valcarce R, Vía J, Santamaría I. Detection of rank-$P$ signals in Cognitive Radio Networks with uncalibrated multiple antennas. {IEEE} {T}rans\ {S}ignal\ {P}rocess. 2011;59(8):3764–3774. doi:10.1109/TSP.2011.2146779 apa: Ramírez, D., Vazquez-Vilar, G., López-Valcarce, R., Vía, J., & Santamaría, I. (2011). Detection of rank-$P$ signals in Cognitive Radio Networks with uncalibrated multiple antennas. {IEEE} {T}rans.\ {S}ignal\ {P}rocess., 59(8), 3764–3774. https://doi.org/10.1109/TSP.2011.2146779 bibtex: '@article{Ramírez_Vazquez-Vilar_López-Valcarce_Vía_Santamaría_2011, title={Detection of rank-$P$ signals in Cognitive Radio Networks with uncalibrated multiple antennas}, volume={59}, DOI={10.1109/TSP.2011.2146779}, number={8}, journal={{IEEE} {T}rans.\ {S}ignal\ {P}rocess.}, author={Ramírez, D. and Vazquez-Vilar, G. and López-Valcarce, R. and Vía, J. and Santamaría, I.}, year={2011}, pages={3764–3774} }' chicago: 'Ramírez, D., G. Vazquez-Vilar, R. López-Valcarce, J. Vía, and I. Santamaría. “Detection of Rank-$P$ Signals in Cognitive Radio Networks with Uncalibrated Multiple Antennas.” {IEEE} {T}rans.\ {S}ignal\ {P}rocess. 59, no. 8 (2011): 3764–3774. https://doi.org/10.1109/TSP.2011.2146779.' ieee: 'D. Ramírez, G. Vazquez-Vilar, R. López-Valcarce, J. Vía, and I. Santamaría, “Detection of rank-$P$ signals in Cognitive Radio Networks with uncalibrated multiple antennas,” {IEEE} {T}rans.\ {S}ignal\ {P}rocess., vol. 59, no. 8, pp. 3764–3774, 2011, doi: 10.1109/TSP.2011.2146779.' mla: Ramírez, D., et al. “Detection of Rank-$P$ Signals in Cognitive Radio Networks with Uncalibrated Multiple Antennas.” {IEEE} {T}rans.\ {S}ignal\ {P}rocess., vol. 59, no. 8, 2011, pp. 3764–3774, doi:10.1109/TSP.2011.2146779. short: D. Ramírez, G. Vazquez-Vilar, R. López-Valcarce, J. Vía, I. Santamaría, {IEEE} {T}rans.\ {S}ignal\ {P}rocess. 59 (2011) 3764–3774. date_created: 2023-01-30T11:51:59Z date_updated: 2023-01-30T11:56:35Z department: - _id: '263' doi: 10.1109/TSP.2011.2146779 intvolume: ' 59' issue: '8' page: 3764–3774 publication: '{IEEE} {T}rans.\ {S}ignal\ {P}rocess.' status: public title: Detection of rank-$P$ signals in Cognitive Radio Networks with uncalibrated multiple antennas type: journal_article user_id: '43497' volume: 59 year: '2011' ... --- _id: '40838' abstract: - lang: eng text: A multiple-input multiple-output (MIMO) frequency-domain channel measurement methodology is pre- sented. This methodology can be implemented in any transmit/receive hardware consisting of radio frequency modules and baseband digital processing units. It involves the transmission and reception of frequency and phase-optimized complex exponentials through antenna arrays, followed by an offline frequency estimation, which makes additional synchronization circuitry unnecesary. To test the feasibility of this method, a series of measurements is presented, employing a $4 \times 4$ dual-band (2.4/5 GHz) MIMO test bed. author: - first_name: J. full_name: Gutiérrez, J. last_name: Gutiérrez - first_name: J. full_name: Pérez, J. last_name: Pérez - first_name: D. full_name: Ramírez, D. last_name: Ramírez - first_name: L. full_name: Vielva, L. last_name: Vielva - first_name: J. full_name: Ibáñez, J. last_name: Ibáñez - first_name: I. full_name: Santamaría, I. last_name: Santamaría citation: ama: Gutiérrez J, Pérez J, Ramírez D, Vielva L, Ibáñez J, Santamaría I. Frequency-Domain Methodology for Measuring MIMO Channels Using a Generic Test Bed. IEEE Trans Instrum Meas. 2011;60(3):827–838. doi:10.1109/TIM.2010.2082432 apa: Gutiérrez, J., Pérez, J., Ramírez, D., Vielva, L., Ibáñez, J., & Santamaría, I. (2011). Frequency-Domain Methodology for Measuring MIMO Channels Using a Generic Test Bed. IEEE Trans. Instrum. Meas., 60(3), 827–838. https://doi.org/10.1109/TIM.2010.2082432 bibtex: '@article{Gutiérrez_Pérez_Ramírez_Vielva_Ibáñez_Santamaría_2011, title={Frequency-Domain Methodology for Measuring MIMO Channels Using a Generic Test Bed}, volume={60}, DOI={10.1109/TIM.2010.2082432}, number={3}, journal={IEEE Trans. Instrum. Meas.}, author={Gutiérrez, J. and Pérez, J. and Ramírez, D. and Vielva, L. and Ibáñez, J. and Santamaría, I.}, year={2011}, pages={827–838} }' chicago: 'Gutiérrez, J., J. Pérez, D. Ramírez, L. Vielva, J. Ibáñez, and I. Santamaría. “Frequency-Domain Methodology for Measuring MIMO Channels Using a Generic Test Bed.” IEEE Trans. Instrum. Meas. 60, no. 3 (2011): 827–838. https://doi.org/10.1109/TIM.2010.2082432.' ieee: 'J. Gutiérrez, J. Pérez, D. Ramírez, L. Vielva, J. Ibáñez, and I. Santamaría, “Frequency-Domain Methodology for Measuring MIMO Channels Using a Generic Test Bed,” IEEE Trans. Instrum. Meas., vol. 60, no. 3, pp. 827–838, 2011, doi: 10.1109/TIM.2010.2082432.' mla: Gutiérrez, J., et al. “Frequency-Domain Methodology for Measuring MIMO Channels Using a Generic Test Bed.” IEEE Trans. Instrum. Meas., vol. 60, no. 3, 2011, pp. 827–838, doi:10.1109/TIM.2010.2082432. short: J. Gutiérrez, J. Pérez, D. Ramírez, L. Vielva, J. Ibáñez, I. Santamaría, IEEE Trans. Instrum. Meas. 60 (2011) 827–838. date_created: 2023-01-30T11:52:00Z date_updated: 2023-01-30T11:56:48Z department: - _id: '263' doi: 10.1109/TIM.2010.2082432 intvolume: ' 60' issue: '3' page: 827–838 publication: IEEE Trans. Instrum. Meas. status: public title: Frequency-Domain Methodology for Measuring MIMO Channels Using a Generic Test Bed type: journal_article user_id: '43497' volume: 60 year: '2011' ... --- _id: '40839' abstract: - lang: eng text: Hardware platforms and testbeds are an essential tool to evaluate, in realistic scenarios, the performance of wireless communications systems. In this work we present a multiuser Multiple-Input Multiple-Output (MIMO) testbed made up of 6 nodes, each one with 4 antennas, which allows us to evaluate Interference Alignment (IA) techniques in indoor scenarios. We specifically study the performance of IA for the 3-user interference channel in the 5 GHz band. Our analysis identifies the main practical issues that potentially degrade the IA performance such as channel estimation errors or collinearity between the desired signal and interference subspaces. author: - first_name: D. full_name: Ramírez, D. last_name: Ramírez - first_name: I. full_name: Santamaría, I. last_name: Santamaría - first_name: J. A. full_name: García-Naya, J. A. last_name: García-Naya - first_name: L. full_name: Castedo, L. last_name: Castedo citation: ama: 'Ramírez D, Santamaría I, García-Naya JA, Castedo L. Experimental Validation of Interference Alignment Techniques using a Multiuser MIMO Testbed. In: Proc. Int. ITG Work. on Smart Antennas. ; 2011. doi:10.1109/WSA.2011.5741921' apa: Ramírez, D., Santamaría, I., García-Naya, J. A., & Castedo, L. (2011). Experimental Validation of Interference Alignment Techniques using a Multiuser MIMO Testbed. Proc. Int. ITG Work. on Smart Antennas. https://doi.org/10.1109/WSA.2011.5741921 bibtex: '@inproceedings{Ramírez_Santamaría_García-Naya_Castedo_2011, place={Aachen, Germany}, title={Experimental Validation of Interference Alignment Techniques using a Multiuser MIMO Testbed}, DOI={10.1109/WSA.2011.5741921}, booktitle={Proc. Int. ITG Work. on Smart Antennas}, author={Ramírez, D. and Santamaría, I. and García-Naya, J. A. and Castedo, L.}, year={2011} }' chicago: Ramírez, D., I. Santamaría, J. A. García-Naya, and L. Castedo. “Experimental Validation of Interference Alignment Techniques Using a Multiuser MIMO Testbed.” In Proc. Int. ITG Work. on Smart Antennas. Aachen, Germany, 2011. https://doi.org/10.1109/WSA.2011.5741921. ieee: 'D. Ramírez, I. Santamaría, J. A. García-Naya, and L. Castedo, “Experimental Validation of Interference Alignment Techniques using a Multiuser MIMO Testbed,” 2011, doi: 10.1109/WSA.2011.5741921.' mla: Ramírez, D., et al. “Experimental Validation of Interference Alignment Techniques Using a Multiuser MIMO Testbed.” Proc. Int. ITG Work. on Smart Antennas, 2011, doi:10.1109/WSA.2011.5741921. short: 'D. Ramírez, I. Santamaría, J.A. García-Naya, L. Castedo, in: Proc. Int. ITG Work. on Smart Antennas, Aachen, Germany, 2011.' date_created: 2023-01-30T11:52:00Z date_updated: 2023-01-30T11:56:46Z department: - _id: '263' doi: 10.1109/WSA.2011.5741921 place: Aachen, Germany publication: Proc. Int. ITG Work. on Smart Antennas status: public title: Experimental Validation of Interference Alignment Techniques using a Multiuser MIMO Testbed type: conference user_id: '43497' year: '2011' ... --- _id: '40826' author: - first_name: Patrik full_name: Wahlberg, Patrik last_name: Wahlberg - first_name: Peter J. full_name: Schreier, Peter J. last_name: Schreier citation: ama: Wahlberg P, Schreier PJ. Locally stationary harmonizable complex improper stochastic processes. J\ Time Ser\ Anal. 2011;32(1):33–46. doi:10.1111/j.1467-9892.2010.00682.x apa: Wahlberg, P., & Schreier, P. J. (2011). Locally stationary harmonizable complex improper stochastic processes. J.\ Time Ser.\ Anal., 32(1), 33–46. https://doi.org/10.1111/j.1467-9892.2010.00682.x bibtex: '@article{Wahlberg_Schreier_2011, title={Locally stationary harmonizable complex improper stochastic processes}, volume={32}, DOI={10.1111/j.1467-9892.2010.00682.x}, number={1}, journal={J.\ Time Ser.\ Anal.}, publisher={Blackwell Publishing Ltd}, author={Wahlberg, Patrik and Schreier, Peter J.}, year={2011}, pages={33–46} }' chicago: 'Wahlberg, Patrik, and Peter J. Schreier. “Locally Stationary Harmonizable Complex Improper Stochastic Processes.” J.\ Time Ser.\ Anal. 32, no. 1 (2011): 33–46. https://doi.org/10.1111/j.1467-9892.2010.00682.x.' ieee: 'P. Wahlberg and P. J. Schreier, “Locally stationary harmonizable complex improper stochastic processes,” J.\ Time Ser.\ Anal., vol. 32, no. 1, pp. 33–46, 2011, doi: 10.1111/j.1467-9892.2010.00682.x.' mla: Wahlberg, Patrik, and Peter J. Schreier. “Locally Stationary Harmonizable Complex Improper Stochastic Processes.” J.\ Time Ser.\ Anal., vol. 32, no. 1, Blackwell Publishing Ltd, 2011, pp. 33–46, doi:10.1111/j.1467-9892.2010.00682.x. short: P. Wahlberg, P.J. Schreier, J.\ Time Ser.\ Anal. 32 (2011) 33–46. date_created: 2023-01-30T11:51:58Z date_updated: 2023-01-30T11:57:47Z department: - _id: '263' doi: 10.1111/j.1467-9892.2010.00682.x intvolume: ' 32' issue: '1' page: 33–46 publication: J.\ Time Ser.\ Anal. publisher: Blackwell Publishing Ltd status: public title: Locally stationary harmonizable complex improper stochastic processes type: journal_article user_id: '43497' volume: 32 year: '2011' ... --- _id: '40827' author: - first_name: Tülay full_name: Adali, Tülay last_name: Adali - first_name: Peter J. full_name: Schreier, Peter J. last_name: Schreier - first_name: Louis L. full_name: Scharf, Louis L. last_name: Scharf citation: ama: 'Adali T, Schreier PJ, Scharf LL. Complex-Valued Signal Processing: The Proper Way to Deal With Impropriety. {IEEE} {T}rans\ {S}ignal\ {P}rocess. 2011;59(11):5101–5125. doi:10.1109/TSP.2011.2162954' apa: 'Adali, T., Schreier, P. J., & Scharf, L. L. (2011). Complex-Valued Signal Processing: The Proper Way to Deal With Impropriety. {IEEE} {T}rans.\ {S}ignal\ {P}rocess., 59(11), 5101–5125. https://doi.org/10.1109/TSP.2011.2162954' bibtex: '@article{Adali_Schreier_Scharf_2011, title={Complex-Valued Signal Processing: The Proper Way to Deal With Impropriety}, volume={59}, DOI={10.1109/TSP.2011.2162954}, number={11}, journal={{IEEE} {T}rans.\ {S}ignal\ {P}rocess.}, author={Adali, Tülay and Schreier, Peter J. and Scharf, Louis L.}, year={2011}, pages={5101–5125} }' chicago: 'Adali, Tülay, Peter J. Schreier, and Louis L. Scharf. “Complex-Valued Signal Processing: The Proper Way to Deal With Impropriety.” {IEEE} {T}rans.\ {S}ignal\ {P}rocess. 59, no. 11 (2011): 5101–5125. https://doi.org/10.1109/TSP.2011.2162954.' ieee: 'T. Adali, P. J. Schreier, and L. L. Scharf, “Complex-Valued Signal Processing: The Proper Way to Deal With Impropriety,” {IEEE} {T}rans.\ {S}ignal\ {P}rocess., vol. 59, no. 11, pp. 5101–5125, 2011, doi: 10.1109/TSP.2011.2162954.' mla: 'Adali, Tülay, et al. “Complex-Valued Signal Processing: The Proper Way to Deal With Impropriety.” {IEEE} {T}rans.\ {S}ignal\ {P}rocess., vol. 59, no. 11, 2011, pp. 5101–5125, doi:10.1109/TSP.2011.2162954.' short: T. Adali, P.J. Schreier, L.L. Scharf, {IEEE} {T}rans.\ {S}ignal\ {P}rocess. 59 (2011) 5101–5125. date_created: 2023-01-30T11:51:58Z date_updated: 2023-01-30T11:57:45Z department: - _id: '263' doi: 10.1109/TSP.2011.2162954 intvolume: ' 59' issue: '11' page: 5101–5125 publication: '{IEEE} {T}rans.\ {S}ignal\ {P}rocess.' status: public title: 'Complex-Valued Signal Processing: The Proper Way to Deal With Impropriety' type: journal_article user_id: '43497' volume: 59 year: '2011' ... --- _id: '40825' author: - first_name: B. S. full_name: Rüffer, B. S. last_name: Rüffer - first_name: Fabian R. full_name: Wirth, Fabian R. last_name: Wirth citation: ama: Rüffer BS, Wirth FR. Stability verification for monotone systems using homotopy algorithms. Numer Algorithms. 2011;58(4):529–543. doi:10.1007/s11075-011-9468-3 apa: Rüffer, B. S., & Wirth, F. R. (2011). Stability verification for monotone systems using homotopy algorithms. Numer. Algorithms, 58(4), 529–543. https://doi.org/10.1007/s11075-011-9468-3 bibtex: '@article{Rüffer_Wirth_2011, title={Stability verification for monotone systems using homotopy algorithms}, volume={58}, DOI={10.1007/s11075-011-9468-3}, number={4}, journal={Numer. Algorithms}, author={Rüffer, B. S. and Wirth, Fabian R.}, year={2011}, pages={529–543} }' chicago: 'Rüffer, B. S., and Fabian R. Wirth. “Stability Verification for Monotone Systems Using Homotopy Algorithms.” Numer. Algorithms 58, no. 4 (2011): 529–543. https://doi.org/10.1007/s11075-011-9468-3.' ieee: 'B. S. Rüffer and F. R. Wirth, “Stability verification for monotone systems using homotopy algorithms,” Numer. Algorithms, vol. 58, no. 4, pp. 529–543, 2011, doi: 10.1007/s11075-011-9468-3.' mla: Rüffer, B. S., and Fabian R. Wirth. “Stability Verification for Monotone Systems Using Homotopy Algorithms.” Numer. Algorithms, vol. 58, no. 4, 2011, pp. 529–543, doi:10.1007/s11075-011-9468-3. short: B.S. Rüffer, F.R. Wirth, Numer. Algorithms 58 (2011) 529–543. date_created: 2023-01-30T11:51:58Z date_updated: 2023-01-30T11:57:43Z department: - _id: '263' doi: 10.1007/s11075-011-9468-3 intvolume: ' 58' issue: '4' page: 529–543 publication: Numer. Algorithms status: public title: Stability verification for monotone systems using homotopy algorithms type: journal_article user_id: '43497' volume: 58 year: '2011' ...