Nonconvex Optimization; Majorization- Minimization; MM; Algorithms; Analog Beamforming; Antenna Selection
Résumé :
[en] In large-scale antenna array (LSAA) wireless communication systems employing analog beamforming architectures, the placement or selection of a subset of antennas can significantly reduce the power consumption and hardware complexity. In this work, we propose a joint design of analog beamforming with antenna selection (AS) or antenna placement (AP) for an analog beamforming system. We approach this problem from a beampattern matching perspective and formulate a sparse unit-modulus least-squares (SULS) problem, which is a nonconvex problem due to the unit-modulus and the sparsity constraints. To that end, we propose an efficient and scalable algorithm based on the majorization-minimization (MM) framework for solving the SULS problem. We show that the sequence of iterates generated by the algorithm converges to a stationary point of the problem. Numerical results demonstrate that the proposed joint design of analog beamforming with AS outperforms conventional array architectures with fixed inter-antenna element spacing.
Disciplines :
Ingénierie électrique & électronique
Auteur, co-auteur :
ARORA, Aakash ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
Tsinos, Christos
MYSORE RAMA RAO, Bhavani Shankar ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
CHATZINOTAS, Symeon ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
OTTERSTEN, Björn ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Co-auteurs externes :
no
Langue du document :
Anglais
Titre :
Analog Beamforming with Antenna Selection for Large-Scale Antenna Arrays
Date de publication/diffusion :
2021
Nom de la manifestation :
IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) 2021, 6-11 June 2021, Toronto, Ontario, Canada
Organisateur de la manifestation :
IEEE
Lieu de la manifestation :
Toronto, ON, Canada
Date de la manifestation :
from 06-06-2021 to 11-06-2021
Titre de l'ouvrage principal :
Proc. 2021 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
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