随机M进制正交码混合DS-SFH CDMA扩频通信系统性能分析

Hybrid DS SFH CDMA Performance of SS Communication Systems with Random Orthogonal Codes

本文研究了随机Ｍ进制正交码混合ＤＳ－ＳＦＨ扩频码分多址信号经过多径瑞利频率非选择性衰落信道，在非相干ＲＡＫＥ接收机中采用最大输出信噪比选择或最大输出选择分集接收时系统的性能；给出了两种分集接收情况下差错概率表示式。数值计算研究了分集数、Ｍ值、多用户干扰对系统性能的影响。

Performance of hybrid direct sequence slow frequency hopping Code Division Multiple Access (DS SFH CDMA) spread spectrum(SS) signal, over multipath Rayleigh fading channel with noncoherent RAKE receiver is examed. Two maximum selection diversity reception schemes, maximum signal to noise ratio selection and maximum output selection, are considered. Equations of the probability of error of the two diversity reception schemes are presented. Numerical results show the effects of the number of diversity, value of M , and multiple access interference on the system's performance.