一种低成本的PN码捕获方案  

A Low-Cost PN code acquisition scheme

作　　者：赵晔[1] 刘晓锋[1] 顾学迈[1] 

机构地区：[1]哈尔滨工业大学通信技术研究所,黑龙江哈尔滨150001

出　　处：《哈尔滨工业大学学报》2005年第4期515-517,共3页Journal of Harbin Institute of Technology

摘　　要：DS/CDMA通信系统中,只有完成了PN码的同步和捕获,系统才能正确工作.为此,提出一种PN码串行搜索多驻留时间捕获方案,并进行了系统仿真.仿真结果表明,该方案在有限增加电路复杂程度的基础上,能较大缩短捕获时间,提高系统性能.PN Code' s acquisition is an important research topic in the DS/CDMA communication system. The system can work well only when PN code is synchronized exactly. Here a Multi - Dwell Time Detection acquisition scheme is advanced. Based on the simulation results, the acquisition time is shortened and the system efficiency is optimized, with only a little increase of the circuit' s complexity.

关 键 词：PN码 检测概率 虚警概率 平均捕获时间 

分 类 号：TU831.6[建筑科学—供热、供燃气、通风及空调工程]