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Blind estimation of MIMO relay channels

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Open access
Authors
Chiong, Choo Wee Raymond
Rong, Yue
Xiang, Y.
Date
2014
Type
Conference Paper

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Citation
Chiong, C.W.R. and Rong, Y. and Xiang, Y. 2014. Blind estimation of MIMO relay channels, in Seghouane, A. (ed), The 2014 IEEE Workshop on Statistical Signal Processing (SSP), Jun 29-Jul 2 2014, pp. 400-403. Gold Coast, Qld: IEEE.
Source Title
Proceedings of the 2014 IEEE Workshop on Statistical Signal Processing
Source Conference
The 2014 IEEE Workshop on Statistical Signal Processing
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Department of Electrical and Computer Engineering
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Abstract

In this paper, we integrate two blind source separation (BSS) methods to estimate the individual channel state information (CSI) for the source-relay and relay-destination links of three-node two-hop multiple-input multiple-output (MIMO) relay systems. In particular, we propose a first-order Z-domain precoding technique for the blind estimation of the relay-destination channel matrix, while an algorithm based on the constant modulus and mutual information properties is developed to estimate the source-relay channel matrix. Compared with training-based MIMO relay channel estimation approaches, our 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.