摘要
针对扩频通信系统中伪随机序列的并行捕获系统复杂 ,串行系统捕获时间长 ,提出了一种混合方案 ,既能减少系统的复杂度同时又能缩短捕获时间 ,提高系统的性能 .仿真结果表明 :在运算复杂度有限的情况下 ,达到了与匹配滤波器法相当的平均捕获时间 ,并实现了较高的检测概率和虚警概率 .
A hybrid scheme is proposed in view of the fact that the parallel acquisition system of pseudo-random sequences is complex and the serial acquisition time is long in the spread spectrum communication system. The scheme can not only reduce the complexity of parallel system, but also shorten the serial acquisition time, so that it advances the system performance. Simulation results show that it realizes average acquisition time equivalent to the method of matching filter and reaches higher detection probability and false alarm probability.
出处
《大庆石油学院学报》
CAS
北大核心
2004年第3期96-98,共3页
Journal of Daqing Petroleum Institute
关键词
伪随机
捕获
并行
串行
串—并
pseudo-random
acquisition
parallel
serial
serial-parallel
