突发OFDM通信帧同步方法设计与实现

摘要

在突发OFDM通信系统中,帧同步起着至关重要的作用,帧同步方案优劣直接影响着整个通信系统的性能.本文针对呈现强干扰、恶劣时变、严重的频率选择等特性的电力线信道,提出一种能量检测+精确同步的帧同步方案.设计了能量检测和精确同步的数字实现算法,并给出仿真结果,最后对设计方案硬件实现需求进行了评估.%In the OFDM burst communication system, frame synchronization plays a vital role and directly affects the performance of the entire communication system. This paper proposed a frame synchronization scheme with energy detection and accurate synchronization for the power channel which presents strong interference, poor time-variation and severe frequency selection. The digital algorithm for energy detection and accurate synchronization is designed, and the simulation results and the needs assessments of the hardware implementation are given.