Recovering cooperative multiplexing gain in wireless relay networks

Yang, T; Yuan, J; Zhang, W

Recovering cooperative multiplexing gain in wireless relay networks

Yang, T

Yuan, J Zhang, W

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Publication Type:: Journal Article
Citation:: IEEE Workshop on Local and Metropolitan Area Networks, 1993, pp. 3512 - 3525
Issue Date:: 1993-01-01

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Field	Value	Language
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, W	en_US
dc.date.issued	1993-01-01	en_US
dc.identifier.citation	IEEE Workshop on Local and Metropolitan Area Networks, 1993, pp. 3512 - 3525	en_US
dc.identifier.issn	1944-0367	en_US
dc.identifier.uri	http://hdl.handle.net/10453/39574
dc.description.abstract	© 2010 IEEE. We consider an uplink communication in a wireless network where each source-user is assisted by M half-duplex relays. The source users and relays are equipped with singleantenna whereas the destination has M antennas. We show that the degree of freedom (d.o.f.) of this network is limited by the links from the source to the collection of relays and destination. This phenomenon is referred to as a "d.o.f. bottleneck problem" which compromise the cooperative multiplexing gain (CMG) and the achievable rate of the system. To improve the CMG, we propose an auxiliary frequency bands (AFBs)-based approach to tackle the d.o.f. bottleneck problem. Information theoretic analysis and numerical results show that the proposed scheme can achieve a CMG of min(M +1, N) when the number of AFBs is sufficiently large. As compared with conventional cooperative communications, the improved multiplexing gain of the proposed scheme is translated into tremendously increased achievable rate at a relatively high SNR.	en_US
dc.relation.ispartof	IEEE Workshop on Local and Metropolitan Area Networks	en_US
dc.relation.isbasedon	10.1109/TCOMM.2010.093010.090731	en_US
dc.title	Recovering cooperative multiplexing gain in wireless relay networks	en_US
dc.type	Journal Article
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:

© 2010 IEEE. We consider an uplink communication in a wireless network where each source-user is assisted by M half-duplex relays. The source users and relays are equipped with singleantenna whereas the destination has M antennas. We show that the degree of freedom (d.o.f.) of this network is limited by the links from the source to the collection of relays and destination. This phenomenon is referred to as a "d.o.f. bottleneck problem" which compromise the cooperative multiplexing gain (CMG) and the achievable rate of the system. To improve the CMG, we propose an auxiliary frequency bands (AFBs)-based approach to tackle the d.o.f. bottleneck problem. Information theoretic analysis and numerical results show that the proposed scheme can achieve a CMG of min(M +1, N) when the number of AFBs is sufficiently large. As compared with conventional cooperative communications, the improved multiplexing gain of the proposed scheme is translated into tremendously increased achievable rate at a relatively high SNR.

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http://hdl.handle.net/10453/39574