Design of linear physical-layer network coding for MIMO two-way relay channels without transmitter CSI

Guo, J; Yang, T; Yuan, J; Zhang, JA

Design of linear physical-layer network coding for MIMO two-way relay channels without transmitter CSI

Guo, J Yang, T

Yuan, J Zhang, JA

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Publication Type:: Conference Proceeding
Citation:: 2015 IEEE Wireless Communications and Networking Conference, WCNC 2015, 2015, pp. 1 - 6
Issue Date:: 2015-01-01

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Field	Value	Language
dc.contributor.author	Guo, J	en_US
dc.contributor.author	Yang, T https://orcid.org/0000-0002-9870-6866	en_US
dc.contributor.author	Yuan, J	en_US
dc.contributor.author	Zhang, JA https://orcid.org/0000-0002-6102-3762	en_US
dc.date.issued	2015-01-01	en_US
dc.identifier.citation	2015 IEEE Wireless Communications and Networking Conference, WCNC 2015, 2015, pp. 1 - 6	en_US
dc.identifier.isbn	9781479984060	en_US
dc.identifier.uri	http://hdl.handle.net/10453/119856
dc.description.abstract	© 2015 IEEE. In this paper, we propose a new linear physical-layer network coding scheme for spatial-multiplexing MIMO two-way relay channels (TWRCs), where the transmitters lack the channel state information (CSI). In the uplink, each user transmits independent signal streams from its multiple antennas, and the two users transmit simultaneously. The relay selects a finite-field coefficient matrix based on its receiver CSI. It then jointly computes the associated linear combinations of all messages. In the downlink, the resultant message-combinations are forwarded to the users, which recover their desired messages. We derive an asymptotic expression for the coefficient matrix used by the relay that minimizes the error probability. We show by numerical results that for Rayleigh fading channel, the proposed linear PNC scheme outperforms existing schemes by up to 4.5 dB and that the proposed scheme approaches an interference-free lower bound at a sufficiently high SNR.	en_US
dc.relation.ispartof	2015 IEEE Wireless Communications and Networking Conference, WCNC 2015	en_US
dc.relation.isbasedon	10.1109/WCNC.2015.7127435	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	Design of linear physical-layer network coding for MIMO two-way relay channels without transmitter CSI	en_US
dc.type	Conference Proceeding
utslib.for	0906 Electrical and Electronic Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - GBDTC - Global Big Data Technologies
utslib.copyright.status	closed_access	*
pubs.publication-status	Published	en_US

Abstract:

© 2015 IEEE. In this paper, we propose a new linear physical-layer network coding scheme for spatial-multiplexing MIMO two-way relay channels (TWRCs), where the transmitters lack the channel state information (CSI). In the uplink, each user transmits independent signal streams from its multiple antennas, and the two users transmit simultaneously. The relay selects a finite-field coefficient matrix based on its receiver CSI. It then jointly computes the associated linear combinations of all messages. In the downlink, the resultant message-combinations are forwarded to the users, which recover their desired messages. We derive an asymptotic expression for the coefficient matrix used by the relay that minimizes the error probability. We show by numerical results that for Rayleigh fading channel, the proposed linear PNC scheme outperforms existing schemes by up to 4.5 dB and that the proposed scheme approaches an interference-free lower bound at a sufficiently high SNR.

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http://hdl.handle.net/10453/119856