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Massive MIMO in Mobile Networks: Self-Calibration with Channel Estimation Error

Mi, De, Chen, Hongzhi, Gao, Zhen, Zhang, Lei and Xiao, Pei (2020) Massive MIMO in Mobile Networks: Self-Calibration with Channel Estimation Error In: ACM MobiCom 2020 The 15th Workshop on Mobility in the Evolving Internet Architecture (MobiArch’20), 21 Sep 2020, London, UK.

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Abstract

Time-division-duplexing (TDD) massive multiple-input multiple-output (MIMO) systems will play a crucial role in the deployment of emerging mobile networks in 5G and beyond. Such systems heavily rely on the reciprocity-based channel estimation for its scalability. However, the imperfect channel reciprocity, mainly caused by radio-frequency mismatches among the base station antennas, can contaminate the estimate of the effective channel response thus become a performance-limiting factor. In practice, self-calibration schemes are often applied to compensate for this type of imperfections. This work investigates two self-calibration schemes, namely relative calibration and inverse calibration. Considering a TDD massive multi-user MIMO system in the presence of both channel reciprocity error and imperfect channel estimation, we derive closed-form expressions for the receive mean-square error and provide an in-depth comparative analysis of the post-equalisation performance of two calibration schemes. The proposed analytical results are verified via Monte-Carlo simulations.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
NameEmailORCID
Mi, Ded.mi@surrey.ac.uk
Chen, Hongzhihc0031@surrey.ac.uk
Gao, Zhen
Zhang, Leilz0004@surrey.ac.uk
Xiao, PeiP.Xiao@surrey.ac.uk
Date : 21 September 2020
Funders : Engineering and Physical Sciences Research Council (EPSRC)
DOI : 10.1145/3411043.3412507
Copyright Disclaimer : © 2020 Copyright held by the owner/author(s). Publication rights licensed to ACM.
Uncontrolled Keywords : Massive MIMO; Channel reciprocity; Self calibration; Channel estimation
Depositing User : Clive Harris
Date Deposited : 07 Sep 2020 10:28
Last Modified : 07 Sep 2020 11:04
URI: http://epubs.surrey.ac.uk/id/eprint/858547

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