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

Deming Chu; Anzhong Hu

doi:10.1515/freq-2019-0211

Article

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

Deming Chu and Anzhong Hu

Published/Copyright: June 29, 2020

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From the journal Frequenz Volume 74 Issue 9-10

Abstract

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.

Keywords: channel estimation; 5G; massive MIMO; tilt; throughput

Corresponding author: Anzhong Hu, School of Communication Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China, E-mail: huaz@hdu.edu.cn

Funding source: Zhejiang Provincial Natural Science Foundation of China

Funding source: National Natural Science Foundation of China

Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: This research was supported by Project LY20F010007 supported by Zhejiang Provincial Natural Science Foundation of China and Project 61601152 and Project U1609216 supported by National Natural Science Foundation of China.
Employment or leadership: None declared.
Honorarium: None declared.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2019-12-11

Accepted: 2020-05-05

Published Online: 2020-06-29

Published in Print: 2020-09-25

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https://doi.org/10.1515/freq-2019-0211

Keywords for this article

channel estimation; 5G; massive MIMO; tilt; throughput