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Rate optimization for massive MIMO relay networks: A minorization-maximization approach
Naghsh, M.M.; Soltanalian, M.; Stoica, P. et al.
2016In Acoustics, Speech and Signal Processing (ICASSP), 2016 IEEE International Conference on
Peer reviewed
 

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Keywords :
MIMO; Optimization; Relay networks (telecommunications); Linear programming; Signal to noise ratio; Convergence
Abstract :
[en] We consider the problem of sum-rate maximization in massive MIMO two-way relay networks with multiple (communication) operators employing the amplify-and-forward (AF) protocol. The aim is to design the relay amplification matrix (i.e., the relay beamformer) to maximize the achievable communication sum-rate through the relay. The design problem for the case of single-antenna users can be cast as a non-convex optimization problem, which in general, belongs to a class of NP-hard problems. We devise a method based on the minorization-maximization technique to obtain quality solutions to the problem. Each iteration of the proposed method consists of solving a strictly convex unconstrained quadratic program; this task can be done quite efficiently such that the suggested algorithm can handle the beamformer design for relays with up to ~ 70 antennas within a few minutes on an ordinary PC. Such a performance lays the ground for the proposed method to be employed in massive MIMO scenarios.
Disciplines :
Computer science
Author, co-author :
Naghsh, M.M.
Soltanalian, M.
Stoica, P.
Masjedi, M.
Ottersten, Björn ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
External co-authors :
yes
Language :
English
Title :
Rate optimization for massive MIMO relay networks: A minorization-maximization approach
Publication date :
May 2016
Event name :
Acoustics, Speech and Signal Processing (ICASSP), 2016 IEEE International Conference on
Event place :
Shangai, China
Event date :
from 20-03-2016 to 25-03-2016
Audience :
International
Main work title :
Acoustics, Speech and Signal Processing (ICASSP), 2016 IEEE International Conference on
Publisher :
IEEE
ISBN/EAN :
978-1-4799-9988-0
Peer reviewed :
Peer reviewed
Focus Area :
Security, Reliability and Trust
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