Passive Primary Receiver Detection for Underlay Spectrum Sharing in Cognitive Radio
Guodong Zhao, Wuyu Shi, Liying Li, Shaoqian Li · IEEE Signal Processing Letters · 2014
In this letter, we propose a passive detection method to enable cognitive user to detect active primary receiver. With our method, cognitive user may conduct underlay spectrum sharing without the need of channel state information between primary and cognitive users. Simulation results show that our detector can provide about 100% to 300% more access probabilities in average than conventional energy detector.