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R. Lopez-Valcarce, and G. Vazquez-Vilar, "Wideband Spectrum Sensing in Cognitive Radio: Joint Estimation of Noise Variance and Multiple Signal Levels", 2009 IEEE International Workshop on Signal Processing Advances for Wireless Communications (Spawc 2009), Perugia, Italy, June, 2009.
G. Vazquez-Vilar, R. Lopez-Valcarce, C. Mosquera, and N. Gonzalez-Prelcic, "Wideband Spectral Estimation from Compressed Measurements Exploiting Spectral a priori Information in Cognitive Radio Systems", 2010 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2010), Dallas, U.S.A., March, 2010.
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G. Vazquez-Vilar, and R. Lopez-Valcarce, "Spectrum sensing exploiting guard bands and weak channels", Signal Processing, IEEE Transactions on, vol. 59, no. 12, pp. 6045-6057, December, 2011.
G. Vazquez-Vilar, D. Ramirez, R. Lopez-Valcarce, J. Via, and I. Santamaria, "Spatial rank estimation in Cognitive Radio Networks with uncalibrated multiple antennas", 4th International Conference on Cognitive Radio and Advanced Spectrum Management (CogART 2011), Barcelona, Spain, October, 2011.
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K. D. Nguyen, L. K. Rasmussen, A. Guillén i Fàbregas, and N. Letzepis, "Rate-diversity-delay tradeoff for ARQ systems over MIMO block-fading channels", Proceedings of the IEEE on Australian Communications Theory Workshop, AusCTW 2009, 4805611, no. 4805611, Sydney, Australia, IEEE, pp. 116–121, Mar, 2009.
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N. Letzepis, and A. Guillén i Fàbregas, "Outage probability of the MIMO gaussian free space optical channel with PPM", Proceedings of the IEEE International Symposium on Information Theory, ISIT' 08, Toronto, Canada, IEEE, pp. 2649–2653, Aug, 2008.
N. Letzepis, and A. Guillén i Fàbregas, "Outage probability of the Gaussian MIMO free space optical channel with PPM", IEEE Transactions on Communications: IEEE Communications Society, pp. 2649–2653, 2009.
N. Letzepis, and A. Guillén i Fàbregas, "Outage probability of the gaussian free space optical channel with pulse-position modulation", Austrlian Communicatiosn Theory Workshop 2008, Christchurch, New Zealand, IEEE, 2008.
K. D. Nguyen, N. Letzepis, A. Guillén i Fàbregas, and L. K. Rasmussen, "Outage diversity of MIMO block-fading channels with causal channel state information", Proceedings of the IEEE International Symposium on information Theory Proceedings, Audtin, TX, USA, IEEE, pp. 2168–2172, 2010.
N. Letzepis, K. D. Nguyen, A. Guillén i Fàbregas, and W. G. Cowley, "Outage analysis of the hybrid free-space optical and radio-frequency channel", IEEE Journal on Selected Areas in Communications, vol. 27: IEEE, pp. 1709–1719, 2009.
G. Lechner, A. Guillén i Fàbregas, L. K. Rasmussen, and K. D. Nguyen, "Optimal Power Control for LDPC Codes in Block-fading Channels", IEEE Transactions on Communications, vol. 59, pp. 1759–1765, Jul., 2011.
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R. Lopez-Valcarce, G. Vazquez-Vilar, and J. Sala, "Multiantenna spectrum sensing for Cognitive Radio: overcoming noise uncertainty", The 2nd International Workshop on Cognitive Information Processing (CIP 2010), Elba Island (Tuscany), Italy, June, 2010.
G. Vazquez-Vilar, R. Lopez-Valcarce, and J. Sala, "Multiantenna spectrum sensing exploiting spectral a priori information", Wireless Communications, IEEE Transactions on, vol. 10, no. 12, pp. 4345-4355, December, 2011.
D. Ramirez, G. Vazquez-Vilar, R. Lopez-Valcarce, J. Via, and I. Santamaria, "Multiantenna Detection under Noise uncertainty and primary user's spatial structure", 2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2011), Prague, Czech Republic, May, 2011.
R. Lopez-Valcarce, G. Vazquez-Vilar, and M. Alvarez-Diaz, "Multiantenna detection of multicarrier primary signals exploiting spectral a priori information", 4th International Conference on Cognitive Radio Oriented Wireless Networks and Communications (Crowncom 2009), Hannover, Germany, June, 2009.
A. Guillén i Fàbregas, M. Guillaud, G. Caire, K. Gosse, S. Rouquette, A. Ribeiro Dias, P. Bernardin, X. Miet, J. - M. Conrat, Y. Toutain, et al., "A MIMO-OFDM testbed for wireless local area networks", ASILOMAR Conference on Signals Systems and Computers, vol. 1, no. 39, Pacific Grove, CA, US, IEEE Operations Center, pp. 82–88, october, 2005.
L. K. Rasmussen, A. Guillén i Fàbregas, K. D. Nguyen, and N. Letzepis, "MIMO ARQ systems with multi-level feedback", Proceedings of the 2009 IEEE International Symposium on Information Theory, Seoul, Korea, IEEE: Institute of Electrical and Electronics Engineers, pp. 254–258, Aug, 2009.