基于自适应训练序列的MIMO-OFDM系统频率同步算法

doi:10.13190/jbupt.201001.43.210

北京邮电大学学报 ›› 2010, Vol. 33 ›› Issue (1): 43-46.doi: 10.13190/jbupt.201001.43.210

基于自适应训练序列的MIMO-OFDM系统频率同步算法

黄振¹；黄海¹；彭端²；尹长川¹；高龙³

(1.北京邮电大学信息与通信工程学院, 北京 100876; 2.广东工业大学信息工程学院，广州 510006; 3.德州农工大学电子计算机工程学院，德克萨斯州 77843)

收稿日期:2009-04-07 修回日期:2009-07-08 出版日期:2010-02-28 发布日期:2010-02-28
通讯作者: 黄振

Adaptive Training Sequence Based Frequency Synchronization Scheme for MIMO-OFDM Systems

〗HUANG Zhen¹,HUANG Hai¹；PENG Duan²；YIN Changchuan¹；GAO Long³

(1.School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China; 2.Information Engineering College, Guangdong University of Technology, Guangzhou 510006, China; 3.Department of Computer Science and Engineering, Texas Agriculture and Mechanic University, Texas 77843, USA)

Received:2009-04-07 Revised:2009-07-08 Online:2010-02-28 Published:2010-02-28
Contact: HUANG Zhen

摘要/Abstract

摘要：

对多入多出-正交频分复用(MIMO-OFDM)系统的频率同步问题进行研究，提出基于自适应训
练序列的MIMO-OFDM系统的频率同步算法. 所提出的训练序列利用接收端的信道状态信息(CSI)进行设计，并利用此训练序列对Schenk的载波频编(CFO)估计器进行改进，进一步提高了衰落信道下CFO估计的准确性. 仿真结果表明，本算法能降低信道噪声的干扰，提高时变信道下CFO估计精度.

关键词: 多入多出-正交频分复用, 频率同步, 载波频率偏移, 训练序列

Abstract:

Joint design of the carrier frequency offset (CFO) estimator and adaptive training sequence for multiinput multioutput orthogonal frequency division multiplexing (MIMO-OFDM) system is investigated. With adaptive training sequence, which is optimized according to channel state information (CSI) available at the transmitter, proposed CFO estimator can update Schenks estimator and then reduce the effect of channel noise and further increase the accuracy of CFO estimation in fading channels.

Key words: multi-input multi-output orthogonal frequency division multiplexing, frequency synchronization, carrier frequency offset, training sequence

黄振1 ；黄海1 ；彭端2 ；尹长川1 ；高龙3. 基于自适应训练序列的MIMO-OFDM系统频率同步算法[J]. 北京邮电大学学报, 2010, 33(1): 43-46.

〗HUANG Zhen¹,HUANG Hai¹；PENG Duan²；YIN Changchuan¹；GAO Long³. Adaptive Training Sequence Based Frequency Synchronization Scheme for MIMO-OFDM Systems[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2010, 33(1): 43-46.

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[6]	郑来波，胡健栋. 基于信号重构的OFDM频偏跟踪算法的跟踪范围[J]. 北京邮电大学学报, 2005, 28(2): 80-83.

基于自适应训练序列的MIMO-OFDM系统频率同步算法

Adaptive Training Sequence Based Frequency Synchronization Scheme for MIMO-OFDM Systems

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