认知无线电合作频谱感知算法研究  

Review of Cooperative Spectrum Sensing Algorithm for Cognitive Radio

作　　者：包志强[1] 史园园[1] 

机构地区：[1]西安邮电大学通信与信息工程学院,陕西西安710061

出　　处：《无线电通信技术》2015年第4期24-30,共7页Radio Communications Technology

基　　金：国家自然科学基金项目(61271276);陕西省自然科学基金项目(2012JQ8011);陕西省教育厅自然科学研究项目(11JK0925)

摘　　要：频谱感知是实现认知无线电功能的前提条件,也是认知无线电领域的一个研究热点。近年来人们提出了很多频谱感知的方法,尤其是合作频谱感知算法日益受到人们的关注。综述了合作频谱感知技术的最新研究进展,从简单的线性信息融合算法到复杂的非线性感知算法,以及多天线合作感知等算法,通过仿真比较各种方法的检测性能,并展望未来频谱感知所面临的挑战和发展趋势。Spectrum sensing is a prerequisite for the realization of cognitive radio function,and also a hot research topic in cognitive radio field. In recent years, lots of methods have been proposed for spectrum sensing, especially the cooperative spectrum sensing algorithms ,which are attracting more and more attention. This paper summarizes the latest research progress in cooperative spectrum sensing technology, such as simple linear weighted sensing methods, nonlinear weighted algorithms and cooperative sensing algorithms with multiple antennas.The detection performance of various methods is compared through simulations, and the challenges for the future spectrum sensing are given.

关 键 词：认知无线电 合作频谱感知 信息融合 检测性能 

分 类 号：TN92[电子电信—通信与信息系统]