Reference : Rate optimization for massive MIMO relay networks: A minorization-maximization approach
Scientific congresses, symposiums and conference proceedings : Paper published in a book
Engineering, computing & technology : Computer science
Security, Reliability and Trust
http://hdl.handle.net/10993/29252
Rate optimization for massive MIMO relay networks: A minorization-maximization approach
English
Naghsh, M.M. []
Soltanalian, M. []
Stoica, P. []
Masjedi, M. []
Ottersten, Björn mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
May-2016
Acoustics, Speech and Signal Processing (ICASSP), 2016 IEEE International Conference on
IEEE
Yes
International
978-1-4799-9988-0
Acoustics, Speech and Signal Processing (ICASSP), 2016 IEEE International Conference on
from 20-03-2016 to 25-03-2016
Shangai
China
[en] MIMO ; Optimization ; Relay networks (telecommunications) ; Linear programming ; Signal to noise ratio ; Convergence
[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.
http://hdl.handle.net/10993/29252
10.1109/ICASSP.2016.7472350

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