基于自选信任度的簇加权协作频谱感知算法  

Cooperative spectrum sensing algorithm based on optional confidence weighted clustering

作　　者：李斌[1] 郜丽鹏[1] 林云[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《应用科技》2016年第5期30-34,共5页Applied Science and Technology

基　　金：国家自然科学基金项目(61301095)

摘　　要：协作频谱感知技术可以有效地克服多径衰落、阴影及隐蔽终端等问题,但在协作频谱感知中,存在系统控制信道带宽消耗较大,计算复杂等问题。为了解决以上问题,对传统的指数加权和指数信任度函数中的权值系数做了修正,在传统簇加权协作频谱感知算法的基础上,提出了一种基于指数加权和互信任矩阵的自选信任度的簇加权协作频谱感知算法。仿真结果表明,该算法在保证较好检测概率的同时,能够有效地节省控制信道带宽,并保证系统的可靠性和有效性。Cooperative spectrum sensing can effectively overcome multipath fading,shadow and hidden terminal problems. But there are many problems with it,such as higher band-width consumption,complicated calculations and so on. For solving these problems,this paper modified the weight coefficient of traditional exponent weighted and exponent confidence matrix algorithms. On the basis of traditional cluster weighted cooperative spectrum sensing algorithm,this paper proposed an optional confidence weighted clustering cooperative spectrum sensing algorithm by combining the exponent weighted algorithm with the exponent confidence matrix algorithm. The simulation results show that the new algorithm can get a high detection performance,save band-width of control channel and have good reliability and validity.

关 键 词：协作频谱感知 能量检测 指数加权 互信任矩阵 簇加权 

分 类 号：TN929.5[电子电信—通信与信息系统]