Training Designs for Estimation of Spatially Correlated Fading Channels in MIMO Amplify-and-Forward Two-Way Multi-Relay Networks

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In this letter, we present training designs for estimation of spatially correlated multiple-input multiple-output amplify-and-forward two-way multi-relay channels. An optimal training structure is initially derived to minimize total mean-square-error of the channel estimation and, then, source training power and relay amplification parameters are optimized numerically. For the purpose of complexity reduction and implementation simplicity, an upper bound-based power allocation is also proposed in a closed form. Simulation results show that the proposed schemes considerably outperform the conventional schemes.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2016-04
Language
English
Article Type
Article
Keywords

SYSTEMS

Citation

IEEE COMMUNICATIONS LETTERS, v.20, no.4, pp.772 - 775

ISSN
1089-7798
DOI
10.1109/LCOMM.2015.2502946
URI
http://hdl.handle.net/10203/209112
Appears in Collection
EE-Journal Papers(저널논문)
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