Zou, QiyueZheng, SongfengSayed, Ali H.2017-12-192017-12-192017-12-19200910.1109/SSP.2009.5278501https://infoscience.epfl.ch/handle/20.500.14299/143156Efficient 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.text::conference output::conference proceedings::conference paper