A New Cooperative Spectrum Sensing Algorithm in Cognitive Networks

Among variant kinds of spectrum sensing strategies in cognitive radio (CR) broadly studied before, cooperative sensing is the most popular one to detect the primary user accurately. This paper proposes a new cooperative spectrum sensing algorithm in which double threshold energy detection will be employed at local decision and different fusion rules will be used at the fusion center. Theoretic analysis shows that the proposed cooperative sensing scheme has a good performance in either minimizing the total error probability or detection accuracy.