A Novel Algorithm for Cooperative Distributed Sequential Spectrum Sensing in Cognitive Radio

Details A Novel Algorithm for Cooperative Distributed Sequential Spectrum Sensing in Cognitive Radio A Novel Algorithm for Cooperative Distributed Sequential Spectrum Sensing in Cognitive Radio

2010-10-06

arxiv.org/abs/1010.1071v1

Computer Science

Information Theory

Submitted to IEEE WCNC 2011, Mexico

Scientific paper

This paper considers cooperative spectrum sensing in Cognitive Radios. In our previous work we have developed DualSPRT, a distributed algorithm for cooperative spectrum sensing using Sequential Probability Ratio Test (SPRT) at the Cognitive Radios as well as at the fusion center. This algorithm works well, but is not optimal. In this paper we propose an improved algorithm- SPRT-CSPRT, which is motivated from Cumulative Sum Procedures (CUSUM). We analyse it theoretically. We also modify this algorithm to handle uncertainties in SNR's and fading.

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