差分跳频信号最佳接收机设计  

Design of Optium Receiver for DFH Signal

作　　者：董彬虹[1] 李少谦[1] 陈智[1] 彭守贵[1] 

机构地区：[1]电子科技大学通信抗干扰技术国家级重点实验室,成都610054

出　　处：《电子科技大学学报》2003年第5期530-534,共5页Journal of University of Electronic Science and Technology of China

基　　金：国防科研基金

摘　　要：针对差分跳频技术提出了一种G函数的非二进制卷积编码的等效模型,给出了差分跳频信号的最佳接收机设计方法,研究了维特比硬判决和维特比较判决两种最大似然检测算法,并对在AWGN信道下的两种最大似然检测算法的性能进行了计算机仿真。仿真结果表明,接收机采用最大似然检测算法对于改善系统的性能有明显的作用,对维特比硬判决法的实现方法进行了描述。According to the characteristic of differential frequency hopping, this paper presents a nonbinary convolutional code equivalent model of G function and the design of optium receiver for differential frequency hopping signal. The paper also studies two maxium-likelihood detect algorithms (Viterbi hard-decision detection algorithm and Viterbi soft-decision algorithm) and computer simulations indicate that the maxium-likelihood method can greatly improves performance of differential frequency hopping system for AWGN channel .Finally ,the realization of Viterbi hard-decision detection algorithm is described.

关 键 词：差分跳频 G函数 维特比算法 

分 类 号：TN97[电子电信—信号与信息处理]