基于互信息的雷达通信频谱复用方法  

Spectrum Sharing of Radar and Communication Based on Mutual Information

作　　者：邓艳红 张天贤 贾瑞 孔令讲 Deng Yanhong;Zhang Tianxian;Jia Rui;Kong Lingjiang(School of Information and Communication Engineering,University of Electronic Science and Technology of China,Chengdu,Sichuan 611731,China)

机构地区：[1]电子科技大学信息与通信工程学院,四川成都611731

出　　处：《信号处理》2020年第10期1678-1686,共9页Journal of Signal Processing

基　　金：自然科学基金面上项目(61971109);自然科学基金重点(U19B2017);长江学者基金;国防科技创新特区支持项目(重点项目);中央高校基本科研业务费资助项目(ZYGX2018J009)。

摘　　要：针对雷达通信一体化的应用需求,本文提出了基于互信息的雷达通信频谱复用方法。首先,建立了雷达通信一体化系统的信号模型;其次,构建了基于互信息的雷达性能评价指标,并在此基础上以通信率为通信性能评价指标,建立了基于信息论相关理论基础的雷达通信一体化系统性能评价模型;接着,根据雷达接收信号与通信接收信号的频带复用程度将频谱分配模式分为传统频谱非复用和两种频谱复用模式,推导了雷达通信一体化系统在三种模式下的性能内界;最后,通过对三种模式下的系统性能及频谱资源需求量进行定量仿真评估,对比了频谱复用模式相对于传统频谱非复用模式的系统效能得益,验证了所提方法的有效性。For the application requirement of radar and communication integration,this paper puts forward a method of spectrum sharing based on mutual information.First of all,we establish the signal model of radar and communication integration system.Then,the evaluation index of radar performance based on mutual information theory is constructed.On this basis,we establish the performance evaluation mode of radar and communication integration system based on information theory by taking communication rate as the performance index of communication.Furthermore,the spectrum allocation mode is divided into traditional spectrum non-sharing allocation mode and two spectrum sharing mode according to the overlap degree of received radar signal and communication signal.And the inner bounds of performance of radar and communication integration system for three spectrum allocation modes are derived.Finally,the effectiveness of the proposed method is verified by simulation.

关 键 词：雷达通信一体化 互信息 频谱复用 性能内界 

分 类 号：TN911.2[电子电信—通信与信息系统] P412.25[电子电信—信息与通信工程]