多进制直接序列扩频系统性能分析及仿真  

Performance Analysis and Simulation of M-ary Direct Sequence Spread Spectrum System

作　　者：夏高峰 罗宇[1] 金哲仕 

机构地区：[1]中国航空无线电电子研究所,上海200241

出　　处：《航空电子技术》2015年第2期12-15,20,共5页Avionics Technology

摘　　要：扩频技术能有效提高通信系统抗干扰能力,因此在军事通信及民用通信领域得到了广泛应用。多进制直接序列扩频相对于直接序列扩频具有其特有的优势和较强的实际应用背景。本文对多进制正交扩频系统进行研究,介绍了多进制直接序列扩频的原理、分析了多进制直接扩频系统的误码性能,并研究了适合多进制直接扩频系统的信道编解码。仿真结果表明,多进制扩频具有良好的性能,适合带宽受限系统。Spread spectrum system can effectively improve the anti-jamming capability of communication systems; and it has been widely applied in military communication systems as well as in civilian communication systems. M-ary direct sequence spread spectrum system has its unique advantages and is proven widely applicable. This paper studies on M-ary Direct Sequence Spread Spectrum System, and introduces the theory, the performance and channel coding. Results of performance analysis and simulation indicate that the M-ary direct sequence spread spectrum system has good performance and can be applied to bandwidth constrained systems.

关 键 词：多进制扩频 处理增益 编码交织 

分 类 号：TN911.22[电子电信—通信与信息系统]