The Construct of Training Sequence and Synchronization for MIMO-OFDM System

LUO Ren-ze; YANG Jiao; LI Rui; NIU Na; DANG Yu-pu; FU Yuan-hua; CAO Peng

doi:10.3969/j.issn.0372-2112.2014.09.18

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The Construct of Training Sequence and Synchronization for MIMO-OFDM System

更新时间：2025-07-16

- The Construct of Training Sequence and Synchronization for MIMO-OFDM System
- Acta Electronica Sinica Vol. 42, Issue 9, Pages: 1781-1785(2014)
- 作者机构：
  
  西南石油大学电气信息学院,四川,成都,610500
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0372-2112.2014.09.18
  CLC： TN919.3
- Published：2014
- 稿件说明：
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LUO Ren-ze, YANG Jiao, LI Rui, et al. The Construct of Training Sequence and Synchronization for MIMO-OFDM System[J]. Acta Electronica Sinica, 2014, 42(9): 1781-1785.
DOI：

LUO Ren-ze, YANG Jiao, LI Rui, et al. The Construct of Training Sequence and Synchronization for MIMO-OFDM System[J]. Acta Electronica Sinica, 2014, 42(9): 1781-1785. DOI： 10.3969/j.issn.0372-2112.2014.09.18.

摘要

针对MIMO-OFDM系统对同步错误率和载波频偏特别敏感问题，本文提出了MIMO-OFDM系统训练序列构造及其同步方法.该同步方法设计的训练序列由两个结构不同的序列构成：第一个序列利用重复性构成，第二个序列利用反对称性构成，其构造训练序列中的

因子影响系统定时同步性能.在接收端，利用训练序列和本地数据信号进行互相关获取定时同步，在获取精确地定时同步后进行小数频偏估计和整数频偏估计，其整数频偏估计范围可达到1/4带宽.通过理论分析和仿真表明：本文提出的同步新方法比常规方法有更好的同步性能，并且降低了系统计算复杂度.

Abstract

To reduce synchronization error and sensitivity to carrier frequency offset of MIMO-OFDM system

this paper proposes that construction of training sequence and synchronization method for MIMO-OFDM system.The training sequences of the synchronization method consist of two sequences of different structures:the first one is repetitive and the second one is antisymmetric.The factor

in the training sequences affects timing synchronization performance of the system.The timing synchronization is caught At the receiver by cross-correlating the training sequence and the local signal.The fractional frequency offset and integer frequency offset are estimated after catching precise timing synchronization

with the range of the integer frequ

ency offset estimation being one-quarter of the bandwidth.Theoretical analysis and simulation show that the proposed synchronization has better synchronization performance than the conventional methods and reduces the computational complexity.

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