Cooperative Spectrum Sensing Algorithm Based on Network Coding in Cognitive Radio Systems

Cooperative spectrum sensing taking into account the error effect on the sensing information reporting is studied. Employing the relay, a novel cooperative spectrum sensing algorithm based on network coding is proposed by correcting the received sensing information. The efficiency of the algorithm and the method of relay selection are given. The simulation results show that the performance of the novel algorithm is better than cooperative spectrum sensing based on space-time code, and the novel algorithm can meet the situations when destroyed reporting paths exist.