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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Related citation:LU Zhen,GE Jian-hua.Synchronization and channel estimation for MIMO OFDM wireless LAN systems[J].Journal of Harbin Institute Of Technology(New Series),2009,16(6):799-804.DOI:10.11916/j.issn.1005-9113.2009.06.011.
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Synchronization and channel estimation for MIMO OFDM wireless LAN systems
Author NameAffiliation
LU Zhen Dept. of Electrical Engineering, Shanghai Jiaotong University, Shanghai 200240, China 
GE Jian-hua State Key Laboratory of Integrated Services Networks, Xidian University, Xi’an 710071, China 
Abstract:
A new preamble structure is designed for wireless LAN based on MIMO OFDM systems, which can be used for both synchronization and channel estimation. Modulatable orthogonal polyphase sequence is utilized in training symbol design regarding its correlation properties. The time synchronization and channel estimation are achieved by measuring the correlation between the received training sequence and the locally generated training sequence. Repeated training symbols are used to get carrier frequency offset (CFO) estimation. It is shown from the analysis that the accuracy of frequency synchronization is close to the Cramér-Rao lower bound. The training sequences are optimal for channel estimation based on the minimum mean square error (MMSE).
Key words:  synchronization  channel estimation  MIMO OFDM  wireless LAN
DOI：10.11916/j.issn.1005-9113.2009.06.011
Clc Number:TN925.93
Fund:

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