邻频干扰对跳频系统通信容量的影响分析  

Channel Capacity Analysis of the Adjacent Frequency Interference of Frequency Hopping System

作　　者：刘广凯[1] 全厚德[1] 崔佩璋[1] 姚少林[1] 张大铭 LIU Guang-kai;QUAN Hou-de;CUI Pei-zhang;YAO Shao-lin;ZHANG Da-ming(Ordnance Engineering College,Shijiazhuang 050003,China)

机构地区：[1]军械工程学院,石家庄050003

出　　处：《火力与指挥控制》2016年第8期50-53,共4页Fire Control & Command Control

基　　金：国家自然科学基金(61001087);国家无线重大专项基金资助项目(2014ZX03003001-002)

摘　　要：在已知台站布置的跳频系统中,针对邻频干扰对系统通信容量的影响,从信号信息熵角度,分析了接收点干扰信号和噪声的熵功率,利用信号熵和熵功率不等式,推导得出了以信道参数、干扰台站数和可用频点数为变量的系统通信容量公式。仿真结果表明,在干扰台站数较小时,接收点干扰信号的分布取决于信道参数,而不能简单地假设为高斯分布;并验证了所提理论在nakagami信道下的正确性。Aiming at the system capacity decrease caused by adjacent frequency interference of theknown position of stations in frequency hopping system,the entropy power of receiving interferencesignals is analyzed. Using the signal entropy and entropy power inequality,the system communicationcapacity formula is obtained with parameters of channel parameters,number of available stations andavailable frequency points. Simulation results show that the Shannon capacity of the interference signalssupposed as Gauss distribution does not accord with the simulation results,and the correctness of theproposed theory.

关 键 词：通信容量 邻频干扰 熵功率不等式 熵功率 

分 类 号：TN911[电子电信—通信与信息系统]