基于序列偶的扩频通信系统性能分析  

Performance analysis of the spread spectrum communication system based on sequence pairs

作　　者：钟文广[1] 肖丽萍[1] 

机构地区：[1]燕山大学信息科学与工程学院,秦皇岛066004

出　　处：《电子测量技术》2007年第1期43-45,67,共4页Electronic Measurement Technology

摘　　要：在扩频通信系统中,伪随机码(PN)性能的优劣将直接关系到系统性能的好坏。本文从最佳离散信号的概念引入序列偶。在介绍了序列偶定义和相关理论的基础上,分析序列偶自相关特性,将序列偶作为一种新的扩频序列应用到扩频通信系统中,并用软件对该通信系统误码率性能进行仿真,仿真结果表明,序列偶作为扩频序列的系统误码率性能在一定条件下比用Gold序列、m序列作为扩频序列的扩频通信系统误码率性能更佳,这说明序列偶作为扩频序列在某些场合是可行的。In spread spectrum communication system, the capability of pseudo-noise （PN） code can impact the performance of the whole system directly. In this paper, sequence pairs was introduced from the perfect discrete signal. On the basis of the introduction of the conception and the relevant theory, after analyzing the performance of its autocorrelation, sequence pairs was applied in spread spectrum communication system as a new spreading sequence. Through comparing the performance of the simulated system on code error rate with Gold sequence and m sequence as spreading sequence,we could find the performance of system based on sequence pairs was better than that of systems based on Gold sequence and m sequence in some conditions,and it was concluded that sequence pair could be utilized as another effective spreading sequence in some occasions.

关 键 词：扩频通信 序列偶 自相关 误码率 

分 类 号：TN944.1[电子电信—信号与信息处理]