Collaborative autocorrelation-based spectrum Sensing of OFDM signals in cognitive radios

  title={Collaborative autocorrelation-based spectrum Sensing of OFDM signals in cognitive radios},
  author={Sachin Chaudhari and Jarmo Lund{\'e}n and Visa Koivunen},
  journal={2008 42nd Annual Conference on Information Sciences and Systems},
A simple and efficient spectrum sensing scheme for orthogonal frequency division multiplexing (OFDM) signals of primary user in cognitive radio systems is proposed in this paper. A detector exploiting the well-known autocorrelation property of cyclic prefix (CP) based OFDM signals is developed. The proposed scheme is then extended to the case of many secondary users collaborating in order to detect the primary user in the face of shadowing and fading. The amount of information each user sends… CONTINUE READING
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