cdma2000扩频相干接收机设计和实现

The Design and Implementation of Coherent Receiver for cdma2000 Spreading System

针对衰落环境下多径信号的随机变化特性 ,提出了基于能量窗的初始同步方法 ,以及基于能量窗重心的PN码跟踪方法 ,无需对每一延迟路径单独进行处理 ,从而增加了整个扩频接收机在多径衰落环境下的稳健性。本文提出了扩频接收机的一种综合设计方法 。

A new PN code acquisition and tracking algorithm based on energy window, which particularly accommodating to multi_path fading environments, is presented. Different from other tracking methods which process delayed path respectively, the algorithm is controlled by the gravity of the energy window and makes spread spectrum receiver more robust in multi-path fading channel. This paper also presents a new design method of spread spectrum receiver, which reduces hardware resource remarkably.