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Mutual Coupling Calibration for Multiuser Massive MIMO Systems

Wei, Hao, Wang, Dongming, Zhu, Huiling, Wang, Jiangzhou, Sun, Shaohui, You, Xiaohu (2016) Mutual Coupling Calibration for Multiuser Massive MIMO Systems. IEEE Transactions on Wireless Communications, 15 (1). pp. 606-619. ISSN 1536-1276. (doi:10.1109/TWC.2015.2476467) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:54247)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.
Official URL:
http://doi.org/10.1109/TWC.2015.2476467

Abstract

Massive multiple-input multiple-output (MIMO) is a promising technique to greatly increase the spectral efficiency and may be adopted by the next generation mobile communication systems. Base stations (BSs) equipped with large-scale antennas can serve multiple users simultaneously by exploiting the downlink precoding in time division duplex (TDD) mode. However, channel state information (CSI) of uplink transmissions cannot be simply used for downlink precoding, because the gain mismatches of the transceiver radio frequency (RF) circuits disable the channel reciprocity. In this paper, we focus on antenna calibration for massive MIMO systems with maximal ratio transmit (MRT) precoding to solve the channel nonreciprocity problem. A new calibration method, called mutual coupling calibration, is proposed by using the effect of mutual coupling between adjacent antennas. By exploiting this method, the BS can perform the calibration without extra hardware circuit and users' involvement. We also build up the model of calibration error and derive the closed-form expressions of the ergodic sum-rates for evaluating the impact of calibration error on system performance. Simulation results verify the high calibration accuracy of the proposed method and show the significant improvement of system performance by performing antenna calibration.

Item Type: Article
DOI/Identification number: 10.1109/TWC.2015.2476467
Uncontrolled keywords: Antenna calibration, mutual coupling, channel reciprocity, massive MIMO.
Subjects: T Technology
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Depositing User: Tina Thompson
Date Deposited: 03 Mar 2016 14:45 UTC
Last Modified: 17 Aug 2022 12:20 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/54247 (The current URI for this page, for reference purposes)

University of Kent Author Information

Zhu, Huiling.

Creator's ORCID:
CReDIT Contributor Roles:

Wang, Jiangzhou.

Creator's ORCID: https://orcid.org/0000-0003-0881-3594
CReDIT Contributor Roles:
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