{"date_updated":"2023-01-30T11:56:31Z","place":"Prague, Czech Republic","publication":"Proc.\\ IEEE Int.\\ Conf.\\ Acoustics, Speech and Signal Process.","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."}],"title":"Multiantenna detection under noise uncertainty and primary user’s spatial structure","year":"2011","author":[{"last_name":"Ramírez","full_name":"Ramírez, D.","first_name":"D."},{"first_name":"G.","full_name":"Vazquez-Vilar, G.","last_name":"Vazquez-Vilar"},{"full_name":"López-Valcarce, R.","last_name":"López-Valcarce","first_name":"R."},{"first_name":"J.","full_name":"Vía, J.","last_name":"Vía"},{"first_name":"I.","last_name":"Santamaría","full_name":"Santamaría, I."}],"user_id":"43497","date_created":"2023-01-30T11:51:59Z","doi":"10.1109/ICASSP.2011.5946275","_id":"40834","status":"public","department":[{"_id":"263"}],"type":"conference","citation":{"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: <a href=\"https://doi.org/10.1109/ICASSP.2011.5946275\">10.1109/ICASSP.2011.5946275</a>.","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={<a href=\"https://doi.org/10.1109/ICASSP.2011.5946275\">10.1109/ICASSP.2011.5946275</a>}, 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} }","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: <i>Proc.\\ IEEE Int.\\ Conf.\\ Acoustics, Speech and Signal Process.</i> ; 2011. doi:<a href=\"https://doi.org/10.1109/ICASSP.2011.5946275\">10.1109/ICASSP.2011.5946275</a>","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.","apa":"Ramírez, D., Vazquez-Vilar, G., López-Valcarce, R., Vía, J., &#38; Santamaría, I. (2011). Multiantenna detection under noise uncertainty and primary user’s spatial structure. <i>Proc.\\ IEEE Int.\\ Conf.\\ Acoustics, Speech and Signal Process.</i> <a href=\"https://doi.org/10.1109/ICASSP.2011.5946275\">https://doi.org/10.1109/ICASSP.2011.5946275</a>","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 <i>Proc.\\ IEEE Int.\\ Conf.\\ Acoustics, Speech and Signal Process.</i> Prague, Czech Republic, 2011. <a href=\"https://doi.org/10.1109/ICASSP.2011.5946275\">https://doi.org/10.1109/ICASSP.2011.5946275</a>.","mla":"Ramírez, D., et al. “Multiantenna Detection under Noise Uncertainty and Primary User’s Spatial Structure.” <i>Proc.\\ IEEE Int.\\ Conf.\\ Acoustics, Speech and Signal Process.</i>, 2011, doi:<a href=\"https://doi.org/10.1109/ICASSP.2011.5946275\">10.1109/ICASSP.2011.5946275</a>."}}