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Dynamic Access and Cognitive Communications

Acronym:    DYNACS
Funder:    Spanish Government
Start date:    2011 January 1st
End date:    2014 September 30th
Keywords:    dynamic access, cognitive radio
    
Partners:    Universidad de Vigo
SPCOM Participants:    Josep Font Segura, Meritxell Lamarca Orozco, David Matas, Francisco Ramirez Javega, Francesc Rey Micolau, Jaume Riba Sagarra, Josep Sala Alvarez, Gregori Vázquez Grau and Javier Villares Piera
SPCOM Responsible:    Francesc Rey Micolau

Summary

Spectrum is a valuable resource which is steadily growing scarce as new telecommunication networks are being deployed. Cognitive Radio opens up new possibilities by granting secondary networks access to temporarily unused licensed spectrum. Streamlined Dynamic Spectrum Access (DSA) plays a key role in warranting that heterogeneous networks may co-exist at a specified maximum level of mutual interference and at a minimum Quality of Service. This project sets out to devise and evaluate theoretical tools, algorithms and procedures for the physical and upper layers which may have potential impact on DSA and the resulting performance metrics. A number of research lines are identified, mainly related to the physical layer, which will be addressed from a combined application of Signal Processing, Information Theory and Game Theory tools.

Journal publications

[1] Zahra Pourgharehkhan, Abbas Taherpour, J. Sala Alvarez and Tamer Khattab, "Correlated Multiple Antennas Spectrum Sensing Under Calibration Uncertainty", IEEE Transactions on Wireless Communications, Vol. 14, No. 12, July 2015, pp. 6777 - 6791.

[2] Saeid Sedighi, Abbas Taherpour, J. Sala Alvarez and Tamer Khattab, "On the Performance of Hadamard Ratio Detector Based Spectrum Sensing for Cognitive Radios", IEEE Transactions on Signal Processing, Vol. 63, No. 14, July 2015, pp. 3809 - 3824.

[3] R. López-Valcarce, Javier Villares, J. Riba Sagarra, W. Gappmair and C. Mosquera, "Cramér-Rao Bounds for SNR Estimation of Oversampled Linearly Modulated Signals", IEEE Transactions on Signal Processing, Vol. 63, No. 7, April 2015, pp. 1675 - 1683.

[4] J. Font-Segura, G. Vázquez and J. Riba Sagarra, "Single and Multi-Frequency Wideband Spectrum Sensing with Side-Information", IET Signal Processing, Vol. 8, No. 8, October 2014, pp. 831 - 843.

[5] J. Riba Sagarra, J. Font-Segura, Javier Villares and G. Vázquez, "Frequency-Domain GLR Detection of a Second-Order Cyclostationary Signal Over Fading Channels", IEEE Transactions on Signal Processing, Vol. 62, No. 8, March 2014, pp. 1899 - 1912.

[6] J. Font-Segura, G. Vázquez and J. Riba Sagarra, "Nonuniform Sampling Walls in Wideband Signal Detection", IEEE Transactions on Signal Processing, Vol. 62, No. 1, January 2014, pp. 44 - 55.

[7] Saeid Sedighi, Abbas Taherpour and J. Sala Alvarez, "Spectrum Sensing Using Correlated Receiving Multiple Antennas in Cognitive Radios", IEEE Transactions on Wireless Communications, Vol. 12, No. 11, November 2013, pp. 5754 - 5766.

[8] J. Font-Segura, Y. Su and X. Wang, "Robust non-linear precoding for downlink multiuser multiple-input multiple-output orthogonal frequency-division multiplexing systems with limited feedback", IET Communications, Vol. 6, No. 12, August 2012, pp. 1734 - 1741.

[9] J. Sala Alvarez, G. Vazquez-Vilar and R. López-Valcarce, "Multiantenna GLR detection of rank-one signals with known power spectrum in white noise with unknown spatial correlation", IEEE Transactions on Signal Processing, Vol. 60, No. 6, June 2012, pp. 3065 - 3078.

[10] J. Sala Alvarez, F. Rey Micolau and Javier Villares, "Asymptotically optimum energy profile for Successive Interference Cancellation in DS-CDMA under a power unbalance constraint", IEEE Communications Letters, Vol. 16, No. 2, February 2012, pp. 172 - 175.

[11] G. Vazquez-Vilar, R. López-Valcarce and J. Sala Alvarez, "Multiantenna spectrum sensing using spectral a priori information", IEEE Transactions on Wireless Communications, Vol. 10, No. 12, December 2011, pp. 4345 - 4355.

[12] J. Sala Alvarez, Javier Villares and F. Rey Micolau, "Asymptotic and Finite User PER Analysis of Successive Interference Cancellation for DS-CDMA", IEEE Communications Letters, Vol. 15, No. 11, November 2011, pp. 1145 - 1147.

Conference publications

[1] J. Font-Segura, J. Riba Sagarra and G. Vázquez, "Sphericity Minimum Description Length: Asymptotic Performance Under Unknown Noise Variance", IEEE International Symposium on Information Theory, June 2015.

[2] Javier Villares, J. Sala Alvarez and F. Rey Micolau, "Interference Power Recycling in Two-Scale Ad-Hoc Wireless Networks", IEEE International Conference on Acoustics, Speech and Signal Processing, IEEE International Conference on Acoustics, Speech and Signal Processing, May 2014, pp. 4768 - 4772.

[3] J. Font-Segura, J. Riba Sagarra, Javier Villares and G. Vázquez, "Frequency-Domain GLR Detection of Cyclostationary Signals in Frequency-Selective Channels", IEEE International Conference on Acoustics, Speech and Signal Processing, May 2014, pp. 5769 - 5773.

[4] F. Rey Micolau and J. Sala Alvarez, "Stochastic Dynamic Systems in PHY Abstraction", IEEE Asilomar Conference on Signals, Systems and Computers, November 2013, pp. 1 - 5.

[5] G. Vazquez-Vilar, Daniel Romero, R. López-Valcarce, David Ramirez, Javier Via, Ignacio Santamaria and J. Sala Alvarez, "Recent Advances in multiantenna spectrum sensing, complexity, noise uncertainty and signal rank issues", 2nd Workshop of COST Action IC0902: Cognitive Radio and Networking for Cooperative Coexistence of Heterogeneous Wireless Networks, Second Workshop of COST Action IC0902 Cognitive Radio and Networking for Cooperative, October 2013, pp. 1 - 2.

[6] J. Font-Segura, G. Vázquez and J. Riba Sagarra, "Sampling Walls in Signal Detection of Bernoulli Nonuniformly Sampled Signals", IEEE International Conference on Communications, June 2013.

[7] J. Font-Segura, G. Vázquez and J. Riba Sagarra, "Exploiting Cognitive Cyclostationary Noise Subspace for Noncognitive Spectrum Sensing", IEEE International Workshop on Signal Processing Advances for Wireless Communications, June 2013.

[8] J. Font-Segura, J. Riba Sagarra, Javier Villares and G. Vázquez, "Quadratic Sphericity Test for Blind Detection Over Time-Varying Frequency-Selective Fading Channels", IEEE International Conference on Acoustics, Speech and Signal Processing, May 2013, pp. 1 - 5.

[9] F. Ramirez Javega, M. Lamarca and Javier Villares, "Binary Graphs and Message Passing Strategies for Compressed Sensing in the Noiseless Setting", IEEE International Symposium on Information Theory, July 2012, pp. 1 - 5.

[10] J. Font-Segura, G. Vázquez and J. Riba Sagarra, "Asymptotic Error Exponents in Energy-Detector and Estimator-Correlator Signal Detection", IEEE International Conference on Communications, June 2012, pp. 1 - 5.

[11] J. Font-Segura, G. Vázquez and J. Riba Sagarra, "Novel Periodogram and Capon Spectral Analysis Based on Nonuniform Sampling", IEEE Global Communications Conference, December 2011, pp. 1 - 5.

[12] J. Font-Segura, G. Vázquez and J. Riba Sagarra, "Noise Enhancement and SNR Equivalence in Bernoulli Nonuniform Sampling", International Conference on Cognitive Radio and Advanced Spectrum Management, October 2011, pp. 1 - 5.

[13] J. Sala Alvarez, "Multiantenna GLR Detection of a Gaussian Signal in Spatially Uncorrelated Noise", European Signal Processing Conference, Nineteenth, Vol. 1, September 2011, pp. 2069 - 2073.

[14] F. Ramirez Javega, D. Matas and M. Lamarca, "Adaptive Sampling for Fast Sparsity Pattern Recovery", European Signal Processing Conference, August 2011, pp. 348 - 352.

[15] J. Font-Segura, G. Vázquez and J. Riba Sagarra, "Compressed Correlation-Matching for Spectrum Sensing in Sparse Wideband Regimes", IEEE International Conference on Communications, July 2011, pp. 1 - 5.

[16] J. Font-Segura, G. Vázquez and J. Riba Sagarra, "Multi-Frequency GLRT Spectrum Sensing for Wideband Cognitive Radio", IEEE International Conference on Communications, July 2011, pp. 1 - 5.

[17] F. Ramirez Javega and M. Lamarca, "Variable-Length Source Compression Using Successive Refinement and Non-linear Graph-Based Codes", Data Compression Conference, March 2011.