Estimation of basis frequencies for time-varying SIMO channels : a second-order method

Peng, Dezhong, Xiang, Yong and Huang, Defeng 2010, Estimation of basis frequencies for time-varying SIMO channels : a second-order method, IEEE transactions on signal processing, vol. 58, no. 8, pp. 4026-4039, doi: 10.1109/TSP.2010.2048104.

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Title Estimation of basis frequencies for time-varying SIMO channels : a second-order method
Author(s) Peng, Dezhong
Xiang, YongORCID iD for Xiang, Yong
Huang, Defeng
Journal name IEEE transactions on signal processing
Volume number 58
Issue number 8
Start page 4026
End page 4039
Total pages 14
Publisher IEEE
Place of publication Piscataway, N.J.
Publication date 2010-08
ISSN 1053-587X
Keyword(s) basis frequency
complex exponential basis expansion
second-order statistics
time-varying SIMO channel
Summary The complex exponential basis expansion model (CE-BEM) provides an accurate description for the time-varying (TV) channels encountered in mobile communications. Many blind channel identification and equalization approaches based on the CE-BEM require precise knowledge of the basis frequencies of TV channels. Existing methods for basis frequency estimation usually resort to the higher-order statistics of channel outputs and impose strict constraints on the source signal. In this paper, we propose a novel method to estimate the basis frequencies for blind identification and equalization of time-varying single-input multiple-output (SIMO) finite-impulse-response (FIR) channels. The proposed method exploits only the second-order statistics of channel outputs and does not require strong conditions on the source signal. As a result, it exhibits superior performance to the existing basis frequency estimation methods. The validity of our method is demonstrated by numerical simulations.
Language eng
DOI 10.1109/TSP.2010.2048104
Field of Research 090609 Signal Processing
Socio Economic Objective 890104 Mobile Telephone Networks and Services
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2010
Copyright notice ©2010, IEEE
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Document type: Journal Article
Collection: School of Engineering
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