Channel Estimation for Frequency-Selective Two-Way MIMO Relay Systems
|dc.contributor.author||Chiong, Choo Wee Raymond|
|dc.identifier.citation||Chiong, C.W.R. and Rong, Y. and Xiang, Y. 2014. Channel Estimation for Frequency-Selective Two-Way MIMO Relay Systems, in S. Hanly (ed), The International Symposium on Information Theory and Its Applications, Oct 26 2014, pp. 630-634. Melbourne, Australia: 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 propose a superimposed channel training algorithm 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. We also derive the optimal power allocation between the source and relay trainingsequences. Numerical examples are shown to demonstrate the performance of the proposed algorithm.
|dc.subject||MIMO two-way relay|
|dc.title||Channel Estimation for Frequency-Selective Two-Way MIMO Relay Systems|
|dcterms.source.title||Proceedings of the International Symposium on Information Theory and Its Applications|
|dcterms.source.series||Proceedings of the International Symposium on Information Theory and Its Applications|
|dcterms.source.conference||The International Symposium on Information Theory and Its Applications|
|dcterms.source.conference-start-date||Oct 26 2014|
|dcterms.source.place||Piscataway, NJ, USA|
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|curtin.department||Department of Electrical and Computer Engineering|