一种LTE系统的主同步信号快速捕获方法

摘要

针对长期演进(long term evolution,LTE)系统小区边缘用户,提出一种主同步信号的快速捕获方法.该方法首先在LTE网络可用频段内接收信号,然后对接收到的信号进行自身滑动镜像相关.检测到明显峰值后,在峰值点进行主同步信号的本地相关,从而获取主同步信号索引.分析和仿真结果表明,该方法的运算复杂度低,适用于小区间保持时间同步的多小区网络,尤其是小区边缘用户主同步信号的快速检测.%A method is proposed to fast acquire primary synchronization signal (PSS) for cell edge users in long term evolution (LTE) systems. In this method, signals are received in the configured bandwidths of LTE networks, and the sliding mirror is then correlated. The PSS index is achieved from the local PSS correlation at peak position after a clear peak value is observed. Analysis and simulation results show that it is applicable especially to cell edge users in synchronized multi-cell networks to fast acquire PSS with low complexity.