CMMB信号合作式频谱感知性能分析

Performance analysis of cooperative spectrum sensing for CMMB signal

目前频谱资源紧缺,缓解频谱资源紧张问题重要方法之一便是频谱感知技术。针对中国移动多媒体广播(CMMB)信号的频段,介绍了CMMB信号的帧结构特点。在总结现有频谱感知技术的基础上,分析合作式频谱感知在两种准则(OR准则和AND准则)下的基本原理,最后在Matlab平台上分析合作式感知在各种特定条件下(信道,合作者数,检测方法以及检测准则)的性能。

Currently, the spectrum resource is in short supply. One of the methods of reviving the lack of spectral resource is spectrum sensing. The characteristics of the frame structure about CMMB signals are introduced based on China Mo bile Multimedia Broadcasting frequency. On the basis of summarizing the existing spectrum sensing technology, the basic theory of cooperative spectrum sensing using two different algorithms （OR algorithm and AND algorithm） is analyzed, and the performance of the cooperative spectrum sensing under certain conditions （channel, number of cooperators, detection methods and detection algorithms） are discussed.