多径瑞利衰落信道下一种改进的分布式MIMO-OFDM符号定时同步算法

为了在多径信道中实现精确的符号定时估计,提出一种利用后向搜索的方式来提高同步算法在多径信道下的性能。分析分布式MIMO-OFDM系统模型,在OVPSP算法的基础上进行改进,提出多径信道下符号定时的改进算法,能够在路径损耗严重的多径瑞利衰落信道下,实现分布式MIMO-OFDM系统的精确定时估计,并通过Matlab仿真进行分析。仿真结果证明：该方法比传统的符号定时算法精度提高了30%,能实现更为精确的定时,有较好的应用前景。

An Improved Timing Synchronization Algorithm for Distributed MIMO-OFDM System Under Multi-path Rayleigh Fading Channels

For realizing accuracy signal timing estimation in multipath channel, introduce a back forward searching algorithm to improve synchronization algorithm performance in multipath channel. Analyze distributed MIMO-OFDM system model, based on OVPSP algorithm to improve, introduce signal time improved algorithm based on multipath channel. Based on path damage multipath rayleigh fading channel, realize distributed MIMO-OFDM system accurate timing estimation, and analyze it by Matlab simulation. Simulation result shows that the algorithm accuracy improves 30%compared with traditional signal, and realizes more accurate timing and has a good application prospects.