Antenna tilt optimization for multi-cell massive multiple-input multiple-output (MIMO) systems with two tilts

In this paper, we study the optimization of two tilt angles corresponding to two antenna arrays in each base station (BS) of a massive multiple-input multiple-output system. We consider two scenarios with perfect channel state information (CSI) and imperfect CSI. In the limit of the number of the BS...

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Bibliographic Details
Published inFrequenz Vol. 74; no. 9; pp. 359 - 368
Main Authors Chu, Deming, Hu, Anzhong
Format Journal Article
LanguageEnglish
Published Berlin De Gruyter 01.09.2020
Walter de Gruyter GmbH
Subjects
Antenna arrays
Antennas
channel estimation
Lower bounds
massive MIMO
MIMO (control systems)
Optimization
Orthogonality
throughput
tilt
Online AccessGet full text
ISSN0016-1136
2191-6349
DOI10.1515/freq-2019-0211

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Summary:In this paper, we study the optimization of two tilt angles corresponding to two antenna arrays in each base station (BS) of a massive multiple-input multiple-output system. We consider two scenarios with perfect channel state information (CSI) and imperfect CSI. In the limit of the number of the BS antennas, the channel orthogonality is employed to derive the limit and the lower bound of the throughputs. By maximizing the lower bound or the limit throughput, the two antenna tilt angles are optimized. Simulation results show that the throughput performance can be improved with the designed tilt angles.
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ISSN:0016-1136
2191-6349
DOI:10.1515/freq-2019-0211