M进制直扩系统在平坦衰落下的性能分析

Performance analysis of M-ary direct-sequence spread spectrum system in flat fading channel

分析了采用RS(n,k)编码的一种在MSK调制方式下基于循环移位的M进制直接序列扩频通信系统在Rayleigh衰落信道中的性能,给出了准确的误码率公式。并通过SPW软件仿真给出了该系统在Rayleigh衰落环境下的性能曲线,仿真得到的误码率与公式推导的结果完全吻合。

The performance of a kind of MSK modulated cyclic shift M-ary direct-sequence spread spectrum communications system that employs RS(n,k) coding in Rayleigh fading environment is analyzed in this paper, and the exact expression of bit error rate is given. At the same time, the system performance curve is obtained by using the simulation tool SPW. The simulation results have a good agreement with the theoretical analysis.