Golay Pair Aided Timing Synchronization Algorithm for Distributed MIMO-OFDM System  

作　　者：Weizhi Zhong Xiaoyi Lu Lei Xu Xin Liu 

机构地区：[1]College of Astronautics, Nanjing University of Aeronautics and Astronautics [2]China Dalian University of Technology, School of information and communications

出　　处：《China Communications》2018年第9期178-188,共11页中国通信（英文版）

基　　金：supported by the Fundamental Research Funds for the Central Universities (NS2017066)

摘　　要：In order to solve the problem of inaccurate synchronization for distributed multiple-input multiple-output(MIMO) orthogonal frequency division multiplexing(OFDM) system in both multipath and low signal to noise ratio(SNR) channels, a golay pair aided timing synchronization(GPATS) method is proposed in this paper. A new synchronous training sequence based on the golay pair with guard interval is designed in GPATS method. By utilizing the unique properties of the new training sequence, the different timing point and the inter-transmitter delays(ITD) are obtained at the receiver. Simulation results show that, compared with the traditional synchronization approaches, the proposed algorithm can provide high accuracy in detecting different time offsets caused by the distributed transmitters of the MIMO-OFDM system, especially over multipath and low SNR channels.In order to solve the problem of inaccurate synchronization for distributed multiple-input multiple-output（MIMO） orthogonal frequency division multiplexing（OFDM） system in both multipath and low signal to noise ratio（SNR） channels, a golay pair aided timing synchronization（GPATS） method is proposed in this paper. A new synchronous training sequence based on the golay pair with guard interval is designed in GPATS method. By utilizing the unique properties of the new training sequence, the different timing point and the inter-transmitter delays（ITD） are obtained at the receiver. Simulation results show that, compared with the traditional synchronization approaches, the proposed algorithm can provide high accuracy in detecting different time offsets caused by the distributed transmitters of the MIMO-OFDM system, especially over multipath and low SNR channels.

关 键 词：distributed MIMO-OFDM system timing synchronization golay pair MULTIPATH low SNR 

分 类 号：TN929.53[电子电信—通信与信息系统]