NDLI: Polynomial-time DC (POTDC) for sum-rate maximization in two-way AF MIMO relaying

Content Provider	IEEE Xplore Digital Library
Author	Khabbazibasmenj, A. Vorobyov, S.A. Roemer, F. Haardt, M.
Copyright Year	2012
Description	Author affiliation: Communication Research Laboratory, Ilmenau University of Technology, Germany (Roemer, F.; Haardt, M.) \|\| Dept. of Electrical and Computer Engineering, University of Alberta, Edmonton, Canada (Khabbazibasmenj, A.; Vorobyov, S.A.)
Abstract	The problem of sum-rate maximization in two-way amplify-and-forward (AF) multiple-input multiple-output (MIMO) relaying is considered. Mathematically, this problem is equivalent to the constrained maximization of the product of quadratic ratios that is a non-convex problem. Such problems appear also in many other applications. This problem can be further relaxed into a difference-of-convex functions (DC) programming problem, which is typically solved using the branch-and-bound method without polynomial-time complexity guarantees. We, however, develop a polynomial-time convex optimization-based algorithm for solving the corresponding DC programming problem named polynomial-time DC (POTDC). POTDC is based on a specific parameterization of the problem, semi-definite programming (SDP) relaxation, linearization, and iterations over a single parameter. The complexity of the problem solved at each iteration of the algorithm is equivalent to that of the SDP problem. The effectiveness of the proposed POTDC method for the sum-rate maximization in two-way AF MIMO relay systems is shown.
Starting Page	2889
Ending Page	2892
File Size	173245
Page Count	4
File Format	PDF
ISBN	9781467300452
ISSN	15206149
e-ISBN	9781467300469
e-ISBN	9781467300445
DOI	10.1109/ICASSP.2012.6288520
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-03-25
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relays MIMO Programming Noise Discrete Fourier transforms Optimization Complexity theory semi-definite relaxation Two-way relaying sum-rate difference-of-convex functions
Content Type	Text
Resource Type	Article

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