差分跳频噪声归一化接收机性能分析

摘要

Signal detection method is one of the key technologies of differential frequency hopping. If sequence decoding is used to detect the signal in the receiver, the pedormance of the system can be dramatically improved. In this paper, the noisednormalized combining receiver is proposed. The pedormance of the noised-normalized receiver over Rayleigh channels with partialband jamming is analyzed. The bit error probability bound is obtained based on the theory of complex variables. Simulation results validate our analytical results. It is shown that the noised-normalized receiver can significantly improved the system pedormance.%差分跳频系统的信号检测方法是差分跳频系统的关键技术之一.如果在接收端采用序列检测,能大幅提高差分跳频系统性能.提出了差分跳频噪声归一化接收机,并对该接收机在部分频带干扰Rayleigh衰落信道下的性能进行了分析,采用复变函数相关理论,给出了衰落信道下的误码界;计算机仿真结果表明其理论分析的正确性,同时可看出采用噪声归一化接收机能显著提高系统性能.