Performance of Spectrum Sensing Scheme Using Double Threshold Energy Detection in the Presence of Sensor Noise

In this paper the performance of cooperative spectrum sensing scheme using double threshold energy detection technique in the presence of sensor noise has been investigated. Each cognitive user takes a local decision on spectrum occupancy and sends one bit information to convey its decision to a fusion center. The fusion center collects all decisions and takes a final decision about the presence or absence of primary user using Majority logic. The performance of cooperative spectrum sensing has been investigated in Rayleigh fading channel.