两种伪随机码同步捕获方法的性能比较  

Comparison of Two Methods' Performance in PN Code Acquisition

作　　者：尚晓琥[1] 胡修林[1] 杨灵[1] 

机构地区：[1]华中科技大学电子与信息工程系,武汉430074

出　　处：《通信技术》2001年第9期90-93,共4页Communications Technology

摘　　要：讨论了相关器与延迟匹配滤波器在直接序列扩频通信系统中实现PN码捕获的原理,并在此基础上分析比较了二者抗窄带、宽带噪声对同步检测干扰的能力,以及同步捕获的平均时间和系统在实际应用中具体实现的难易程度。This paper discusses the principle o f the pseudonoise(PN)code' s acquisition in direct spread spectrum communication system by using correlator and delay -matched filter.On the base of these,analyses and compares their r esistant capability to narrow -band and broadband noise in synchroniza-tion detection,the average time of PN code acquisition,and their diffic ulties in practical implementation.

关 键 词：扩频通信 伪随机码 相关器 延迟匹配滤波器 同步捕获 

分 类 号：TN914.42[电子电信—通信与信息系统]