瑞利信道下多天线能量检测性能研究  

Study of Multiple Antenna-aided Energy Detection over Rayleigh Fading Channels

作　　者：曹慧[1] 

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《电视技术》2011年第11期80-83,共4页Video Engineering

基　　金：国家自然科学基金项目(60962001);广西自然科学基金项目(0731025);广西自然科学基金项目(0991018Z)

摘　　要：研究了认知无线电中能量检测的实现,并针对能量检测性能相对较差的缺点,提出采用天线分集提高能量检测的性能。通过数值分析以及瑞利信道下分集能量检测的仿真,对几种方案在瑞利信道下的性能进行了比较,结果表明几种天线分集方案对能量检测性能都有所改善,其中平方率合并方案性能最优。In this paper, the application of energy detection is studied, and a multiple antenna-aided energy detection is introduced to improve the comparatively poor performance of energy detection. The detection capability of several diversity schemes in rayleigh fading channels are compared through numerical analysis and simulation. Results show that antenna diversity can improve the capability of energy detection, and the SLC scheme is the best.

关 键 词：认知无线电 频谱感知 能量检测 

分 类 号：TN92[电子电信—通信与信息系统]