Cooperative MIMO Spectrum Sensing Using Free Probability Theory

Cooperative MIMO Spectrum Sensing Using Free Probability Theory

In this paper, using free probability theory, which is a valuable tool for describing the asymptotic behavior of multiple systems, especially for large matrices, a new cooperative MIMO scheme for spectrum sensing is proposed, which shows how asymptotic free property of random matrices and the proper...

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Bibliographische Detailangaben
Hauptverfasser: Lei Wang, Baoyu Zheng, Jingwu Cui, Qingmin Meng
Format: Tagungsbericht
Sprache:eng
Schlagworte:
AWGN channels
Base stations
Chromium
Cognitive radio
MIMO
Rayleigh channels
Signal detection
Signal processing
Statistics
Wireless communication
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Beschreibung
Zusammenfassung:In this paper, using free probability theory, which is a valuable tool for describing the asymptotic behavior of multiple systems, especially for large matrices, a new cooperative MIMO scheme for spectrum sensing is proposed, which shows how asymptotic free property of random matrices and the property of Wishart distribution can be used to assist spectrum sensing in MIMO system for cognitive radios. Simulations over Rayleigh fading and AWGN channels demonstrate the proposed scheme has better detection performance compared with the energy detection techniques even for the case of a small sample of observations.
ISSN:2161-9646
DOI:10.1109/WICOM.2009.5303287