Massive MIMO in Mobile Networks: Self-Calibration with Channel Estimation Error
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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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Official URL: http://dx.doi.org/10.1145/3411043.3412507
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) | ||||||||||||||||||
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| Divisions : | Faculty of Engineering and Physical Sciences > Electronic Engineering | ||||||||||||||||||
| Authors : |
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| 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 : | 21 Sep 2020 02:08 | ||||||||||||||||||
| URI: | http://epubs.surrey.ac.uk/id/eprint/858547 |
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