Dual-Threshold Cooperative Sensing Based on Coherent MAC in Cognitive Radio

This paper studies the detection of the primary signal under noise uncertainty. A coherent MAC (Multiple Access Control) cooperative sensing scheme is proposed, adopted dual-threshold detection determined by the noise uncertainty range. Using the one-bit hard combine make the cooperative overhead reduce from O(N) to O(1). Simulation shows that the proposed method is superior to the traditional collaborative detection method on performance.