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Channel estimation for frequency-selective two-way MIMO relay systems
conference contribution
posted on 2014-12-08, 00:00 authored by C W R Chiong, Y Rong, Yong XiangYong XiangIn 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 meansquared error (MSE) of channel estimation. We also derive the optimal power allocation between the source and relay training sequences. Numerical examples are shown to demonstrate the performance of the proposed algorithm.
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Event
Information Theory and its Applications. Symposium (2014 : Melbourne, Victoria)Pagination
630 - 634Publisher
IEEELocation
Melbourne, VictoriaPlace of publication
Piscataway, N.J.Start date
2014-10-26End date
2014-10-29ISBN-13
9784885522925Language
engPublication classification
E Conference publication; E1 Full written paper - refereedCopyright notice
2014, Institute of Electrical and Electronics Engineers Inc.Editor/Contributor(s)
[Unknown]Title of proceedings
ISITA 2014 : Proceedings of International Symposium on Information Theory and Its ApplicationsUsage metrics
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