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Blind channel estimation and signal retrieving for MIMO relay systems

Chiong, Choo W.R., Rong, Yue and Xiang, Yong 2016, Blind channel estimation and signal retrieving for MIMO relay systems, Digital signal processing: a review journal, vol. 52, pp. 35-44, doi: 10.1016/j.dsp.2016.02.007.

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Title Blind channel estimation and signal retrieving for MIMO relay systems
Author(s) Chiong, Choo W.R.
Rong, Yue
Xiang, YongORCID iD for Xiang, Yong orcid.org/0000-0003-3545-7863
Journal name Digital signal processing: a review journal
Volume number 52
Start page 35
End page 44
Total pages 10
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2016-05
ISSN 1051-2004
1095-4333
Keyword(s) blind channel estimation
MIMO relay
Z-domain
constant modulus
mutual information
Science & Technology
Technology
Engineering, Electrical & Electronic
Engineering
OFDM SYSTEMS
AMPLIFY
DESIGN
ARRAY
Summary In this paper, we propose a blind channel estimation and signal retrieving algorithm for two-hop multiple-input multiple-output (MIMO) relay systems. This new algorithm integrates two blind source separation (BSS) methods to estimate the individual channel state information (CSI) of the source-relay and relay-destination links. In particular, a first-order Z-domain precoding technique is developed for the blind estimation of the relay-destination channel matrix, where the signals received at the relay node are pre-processed by a set of precoders before being transmitted to the destination node. With the estimated signals at the relay node, we propose an algorithm based on the constant modulus and signal mutual information properties to estimate the source-relay channel matrix. Compared with training-based MIMO relay channel estimation approaches, the proposed algorithm has a better bandwidth efficiency as no bandwidth is wasted for sending the training sequences. Numerical examples are shown to demonstrate the performance of the proposed algorithm.
Language eng
DOI 10.1016/j.dsp.2016.02.007
Field of Research 080199 Artificial Intelligence and Image Processing not elsewhere classified
Socio Economic Objective 890103 Mobile Data Networks and Services
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30082462

Document type: Journal Article
Collection: School of Information Technology
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