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Low-Complexity Antenna Selection for Minimizing the Power Consumption of a MIMO Base Station

Authors:
Rémi Bonnefoi
Christophe Moy
Jacques Palicot
Amor Nafkha

Keywords: Multiple-Input Multiple-Output; Transmit Antenna Selection (TAS); Energy-Efficient Wireless Networks.

Abstract:
In this paper, we study the problem of Transmit An- tenna Selection (TAS) for the minimization of a base station power consumption. We propose an algorithm, which solves this problem when the optimal precoding and power allocation are employed, i.e., when an eigenvalue decomposition is employed with a water- filling algorithm. For that purpose, we derive an approximation for the base station power consumption expression that can be used to compute the number of switched-on antennas. Besides, we show that Norm-Based Selection (NBS) policy can be used for selecting the switched-on antennas. Finally, our numerical results show that the proposed low-complexity algorithm provides optimal power consumption performances.

Pages: 57 to 62

Copyright: Copyright (c) IARIA, 2018

Publication date: July 22, 2018

Published in: conference

ISSN: 2308-4030

ISBN: 978-1-61208-650-7

Location: Barcelona, Spain

Dates: from July 22, 2018 to July 26, 2018