关键词: 认知网络, 协作频谱感知, 演化博弈

Abstract:

A new cooperative spectrum sensing scheme in cognitive radio networks based on evolutionary game is proposed to analyze the secondary users’ transmission time and throughput, model the cooperative sensing as an evolutionary game, derive the dynamic procedure and optimal strategy for the secondary users, and develop a distributed learning algorithm as well. Analysis and simulation show that the proposed scheme guarantees sensing reliability without any performance loss and reduces the communication overhead significantly to achieve high throughput for secondary user in sensing cooperation.

Key words: cognitive radio network, cooperative spectrum sensing, evolutionary game