摘要
讨论了直接序列扩频多址（ＤＳ－ＳＳＭＡ）通信系统在瑞利衰落信道中分集算法的性能，推导了在等增益组合（ＥＧＣ）和选择最大（ＳＭ）分集算法下通信系统的平均差错率。理论分析和数值模拟指出：在改善系统性能和降低复杂性方面，等增益组合分集算法优于选择最大分集算法。
This paper analyzes the performance of direct sequence spread spectrum multipleaccess(DS-SSMA)communication systems which are used over Rayleigh multipath fadingchannel.The approximations for the average error probability of the systems with equal gaincombining(EGC)and selective maximum(SM)multipath diversity algorithms are developed.Analysis and numerical results indicate that the system with EGC diversitv is betterthan the system with SM diversity in the improved performance and less complexity.
出处
《铁道学报》
EI
CSCD
北大核心
1995年第3期57-63,共7页
Journal of the China Railway Society
基金
国家863计划通信主题资助
关键词
扩频多址
分集接收
移运通信
通信系统
spread spectrum multiple access
diversity receiver
mobile communications
