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Asymptotic capacity of the separated MIMO two-way relay channel

Authors
Yang, H.J.Chun, J.Paulraj, A.
Issue Date
2011
Keywords
Generalized singular value decomposition (GSVD); lattice coding; linear precoding; multiple-input multiple-output (MIMO) channels; two-way relay channels (TWRC)
Citation
IEEE Transactions on Information Theory, v.57, no.11, pp 7542 - 7554
Pages
13
Journal Title
IEEE Transactions on Information Theory
Volume
57
Number
11
Start Page
7542
End Page
7554
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/1119
DOI
10.1109/TIT.2011.2165810
ISSN
0018-9448
1557-9654
Abstract
A multiple-input multiple-output two-way relay channel consisting of two communication nodes and a full-duplex relay node in which no direct link exists between the two communication nodes is considered. We propose an achievable scheme that employs horizontally encoded lattice codes combined with generalized singular value decomposition-based precoding for the first phase. The second phase of the proposed scheme follows the fundamentals of the previous scheme, which uses vertically encoded structural bining, with the only difference that the added codeword of the two codewords from the communication nodes, instead of those two individual codewords, is decoded and retransmitted in the proposed scheme. We show that the proposed scheme achieves the cut-set bound asymptotically as the signal-to-noise ratios of the channels tend to infinity. ? 2011 IEEE.
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