Joint design of user power allocation and relay beamforming in two-way MIMO relay networks

Kha, HH; Tuan, HD; Nguyen, HH; Tam, HHM

Joint design of user power allocation and relay beamforming in two-way MIMO relay networks

Kha, HH Tuan, HD

Nguyen, HH Tam, HHM

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Publication Type:: Conference Proceeding
Citation:: 2013, 7th International Conference on Signal Processing and Communication Systems, ICSPCS 2013 - Proceedings, 2013
Issue Date:: 2013-01-01

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Field	Value	Language
dc.contributor.author	Kha, HH	en_US
dc.contributor.author	Tuan, HD https://orcid.org/0000-0003-0292-6061	en_US
dc.contributor.author	Nguyen, HH	en_US
dc.contributor.author	Tam, HHM	en_US
dc.date.issued	2013-01-01	en_US
dc.identifier.citation	2013, 7th International Conference on Signal Processing and Communication Systems, ICSPCS 2013 - Proceedings, 2013	en_US
dc.identifier.isbn	9781479913190	en_US
dc.identifier.uri	http://hdl.handle.net/10453/120173
dc.description.abstract	This paper is concerned with the joint optimization of user power allocation and distributed relay beamforming in two-way wireless relay networks in which multiple multi-antenna relays assist multiple single-antenna users. The design aims at maximizing the minimum information rate among user pairs subject to various practical power constraints at the users and relays. Since the nonconvex structure of the problem is highly complicated, the existing approaches to relax the design problem into a convex program do not appear to be applicable. To solve this challenging nonconvex optimization problem, we introduce auxiliary variables and cast the design problem into a d.c.(difference of convex functions) program. Then, we develop an efficient iterative algorithm of sequential convex optimization to obtain the optimized solutions. Extensive simulation results demonstrate that our proposed joint design outperforms the only relay beamforming design. © 2013 IEEE.	en_US
dc.relation.ispartof	2013, 7th International Conference on Signal Processing and Communication Systems, ICSPCS 2013 - Proceedings	en_US
dc.relation.isbasedon	10.1109/ICSPCS.2013.6723916	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	Joint design of user power allocation and relay beamforming in two-way MIMO relay networks	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
utslib.copyright.status	closed_access	*
pubs.publication-status	Published	en_US

Abstract:

This paper is concerned with the joint optimization of user power allocation and distributed relay beamforming in two-way wireless relay networks in which multiple multi-antenna relays assist multiple single-antenna users. The design aims at maximizing the minimum information rate among user pairs subject to various practical power constraints at the users and relays. Since the nonconvex structure of the problem is highly complicated, the existing approaches to relax the design problem into a convex program do not appear to be applicable. To solve this challenging nonconvex optimization problem, we introduce auxiliary variables and cast the design problem into a d.c.(difference of convex functions) program. Then, we develop an efficient iterative algorithm of sequential convex optimization to obtain the optimized solutions. Extensive simulation results demonstrate that our proposed joint design outperforms the only relay beamforming design. © 2013 IEEE.

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http://hdl.handle.net/10453/120173