摘要
本文提出一种直接序列扩频信号参数估计的新方法,基于直接序列扩频信号的循环谱幅度与相位特性,利用特定处循环谱相位实现信号初相与扩频码初始时间的估计;该估计方法避免了多维搜索,计算量小,估计精度高,且不需要知道扩频码;文中对估计误差方差进行了理论分析,并通过仿真实验验证了其性能。
Based on the characteristics of the cyclic spectrum amplitudes and phases, a novel parameters estimation method of DS signals is presented in this paper. The initial phase of signals and the timing epoch of the spreading code can be estimated by means of the special cyclic spectrum phases. This estimation method is computationally efficient and has a high estimating accuracy. Moreover, this method needn抰 the information of the spreading code. The variances of the errors in estimation are analytically derived, which are proved by the computer simulations.
出处
《通信学报》
EI
CSCD
北大核心
2002年第7期1-7,共7页
Journal on Communications
