摘要
在扩频通信中,扩频码的相关性直接影响到扩频系统的性能。本文提出一种新的扩频信号形式—低/零相关区序列偶。依据扩频通信系统对扩频序列的技术要求,用遗传算法搜出40到50长具有一定低/零相关区长度的二元序列偶。构造出基于低/零相关区序列偶的扩频通信系统,同基于传统扩频码的通信系统相比,结果证明它具有比较好的抗干扰能力。
In spread spectrum communication, PN sequence＇s correlation has effect on the system directly. A new PN sequence-Low/Zero Correlation Zone sequence pairs is introduced. According to the PN sequence＇s technical requirements, the author uses genetic algorithms to search sequence pairs between the length 40 and 50 which have certain length of Low/Zero Correlation Zone. Low/Zero Correlation Zone sequence pairs spread spectrum communication system is presented, compared with traditional sequence spread spectrum communication system, the results show its＇ antiinterference capability is better.
出处
《电路与系统学报》
CSCD
北大核心
2007年第3期62-66,共5页
Journal of Circuits and Systems
关键词
序列偶
低/零相关区
序列偶相关
扩频通信系统
误码率
sequence pairs
Low/Zero Correlation Zone
sequence pairs correlation
spread spectrum communication system
error bit rate
