Watterson信道下能量检测性能研究  

Study of Energy Detection over Watterson Channels

作　　者：闫江涛[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15期129-132,共4页Video Engineering

基　　金：广西自然科学基金项目(0832245)

摘　　要：主要从多天线分集接收的角度出发,在短波环境下,通过分析信号衰落、色散效应对频谱感知性能造成的影响,探索提高短波信道下能量检测性能的方法。通过对Watterson信道下能量检测的仿真,对单天线和多天线下的SLC,MA几种方案的性能进行了分析比较,得出在这几种方案中SLC分集接收的方法能够更好地改善传统能量检测在Watterson信道下性能较差的缺点。In order to improve the performance of energy detection over short-wave channel, the new methods based on multi-antenna diversity reception is presented in this paper through the analysis of signal fading and dispersion effect. The performances of single-antenna, muhiple-anterna using SLC and MA are analyzed through the simulations of energy detection over Watterson channel model. The result shows that, among those three schemes, the SLC method are better able to improve the performance of traditional energy detection over Watterson channel model.

关 键 词：Watterson信道 感知无线电 频谱感知 能量检测 

分 类 号：TN929.5[电子电信—通信与信息系统]