基于交织训练序列的OFDM系统符号同步算法

Timing Synchronization Algorithm Based on Interleaved Preamble for OFDM System

针对OFDM系统符号同步存在偏差对相关峰值的影响,提出采用交织的方法设计训练序列,从而获得强相关峰值。与传统的基于训练序列同步算法相比,需要产生交织表,算法计算复杂度略有增加,但理论分析与实验仿真表明,本算法的准确度和精度更高。

Considering the effect of the oft^et of symbol synchronization in OFDM system on correlation peak, interleaved preamble is proposed to get high correlation peak. Compared with traditional synchronization algorithms based on training sequences, though the proposed algorithm with interleave table has slightly increased computation complexity, both theoretical analysis and simulation results show that the proposed algorithm has higher accuracy.