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Channel estimation for two-way MIMO relay systems in frequency-selective fading environments

Chiong, Choo W. R., Rong, Yue and Xiang, Yong 2015, Channel estimation for two-way MIMO relay systems in frequency-selective fading environments, IEEE Transactions on wireless communications, vol. 14, no. 1, pp. 399-409, doi: 10.1109/TWC.2014.2347321.

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Title Channel estimation for two-way MIMO relay systems in frequency-selective fading environments
Author(s) Chiong, Choo W. R.
Rong, Yue
Xiang, YongORCID iD for Xiang, Yong orcid.org/0000-0003-3545-7863
Journal name IEEE Transactions on wireless communications
Volume number 14
Issue number 1
Start page 399
End page 409
Total pages 11
Publisher IEEE
Place of publication Champaign, III.
Publication date 2015-01-01
ISSN 1536-1276
Keyword(s) Science & Technology
Technology
Engineering, Electrical & Electronic
Telecommunications
Engineering
Channel estimation
MIMO relay
frequency-selective fading
superimposed training
MMSE
two-way relay
power allocation
OPTIMAL-DESIGN
AMPLIFY
NETWORKS
Summary © 2002-2012 IEEE. In this paper, we investigate the channel estimation problem for two-way multiple-input multiple-output (MIMO) relay communication systems in frequency-selective fading environments. We apply the method of superimposed channel training to estimate the individual channel state information (CSI) of the first-hop and second-hop links for two-way MIMO relay systems with frequency-selective fading channels. In this algorithm, a relay training sequence is superimposed on the received signals at the relay node to assist the estimation of the second-hop channel matrices. The optimal structure of the source and relay training sequences is derived to minimize the mean-squared error (MSE) of channel estimation. Moreover, the optimal power allocation between the source and relay training sequences is derived to improve the performance of channel estimation. Numerical examples are shown to demonstrate the performance of the proposed superimposed channel training algorithm for two-way MIMO relay systems in frequency-selective fading environments.
Language eng
DOI 10.1109/TWC.2014.2347321
Field of Research 080199 Artificial Intelligence and Image Processing not elsewhere classified
0906 Electrical And Electronic Engineering
1005 Communications Technologies
0805 Distributed Computing
Socio Economic Objective 861799 Communication Equipment not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Grant ID DP110102076
Copyright notice ©2015, IEEE
Persistent URL http://hdl.handle.net/10536/DRO/DU:30069390

Document type: Journal Article
Collection: School of Information Technology
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