关键词: 认知无线电, 频谱感知, 指数信任度, 融合算法, 审核感知

Abstract: This paper studied the spectrum sensing algorithms mainly from the perspective of multiple cognitive radio users. At present, most decision rules do not take the influence of the trust of spectrum sensing results into consideration. This paper proposed a new sending scheme based on index belief degree function. This scheme is a method of low complexity to improve the performance of spectrum sensing. Considering the security in cognitive radio network, this paper presented a cognitive radio spectrum algorithm based on outlier. This algorithm introduced outlier sensing to the fusion rules and this scheme could improve the robustness of spectrum sensing when some sensing nodes were malfunctioned or malicious. Considering the speed and precision of spectrum sensing in cognitive radio, this paper considered the sensing information to the spectrum sensing algorithm. This algorithm can improve the detection performance of spectrum sensing while accelerating the speed of spectrum sensing.

Key words: cognitive radio, spectrum sensing, index belief degree, fusion algorithm, verification sensing