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Doppler Frequency Offsets Estimation for High-Mobility OFDM Systems
Guo Wei,Yin Qin-ye,Mu Peng-cheng
Department of Electronics and Information Engineering,
*Correspondence author
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Funding: the Foundation for Innovative Research Groups of the NSFC （No.No. 60921003）, the China Postdoctoral Science Foundation （No.No. 20100481346）, the Ph.D. Programs Foundation of Ministry of Education of China （No.No. 200806980020）
Opened online:10 January 2012
Accepted by: none
Citation: Guo Wei,Yin Qin-ye,Mu Peng-cheng.Doppler Frequency Offsets Estimation for High-Mobility OFDM Systems[OL]. [10 January 2012] http://en.paper.edu.cn/en_releasepaper/content/4459101
 
 
In this paper, the problem of multiple Doppler frequency offsets estimation for orthogonal frequency division multiplexing (OFDM) system over doubly-selective channels is investigated. The main application environment is for very high-mobility OFDM systems. The key point is to design a particular preamble structure. Then by remodeling the received blocks through downsampling, we compact parameter space and obtain a low complexity subspace-based estimator with the performance of high-resolution. The effectiveness of the proposed scheme is verified by simulations.
Keywords:Wireless communication; Doppler frequency offsets estimation; OFDM; High-mobility; Downsampling
 
 
 

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