Cooperative spectrum sensing via coherence detection

Abstract

Efficient and reliable spectrum sensing plays a critical role in cognitive radio networks. This paper proposes a cooperative sensing scheme that detects the existence of a common signal component in the signals received by multiple geographically distributed radios. The scheme assumes that signals received by different radios display strong coherence if they have a common source. Detection of this coherence in a wireless environment is studied, especially when the transmitted signal is distorted by multipath channels.

Department(s)

Mathematics

Document Type

Conference Proceeding

DOI

https://doi.org/10.1109/SSP.2009.5278501

Keywords

Cognitive radio, Coherence detection, Spectrum sensing

Publication Date

12-25-2009

Journal Title

IEEE Workshop on Statistical Signal Processing Proceedings

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