@inproceedings{8b67ec7efd6749c3bd94fa94460851f0,
title = "Massive MIMO in Mobile Networks: Self-Calibration with Channel Estimation Error",
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.",
keywords = "channel estimation, channel reciprocity, massive MIMO, self calibration",
author = "De Mi and Hongzhi Chen and Zhen Gao and Lei Zhang and Pei Xiao",
note = "Publisher Copyright: {\textcopyright} 2020 ACM.; 15th ACM Workshop on Mobility in the Evolving Internet Architecture, MobiArch 2020 - Part of Mobicom 2020 ; Conference date: 21-09-2020",
year = "2020",
month = sep,
day = "21",
doi = "10.1145/3411043.3412507",
language = "English",
series = "MobiArch 2020 - Proceedings of the 2020 ACM MobiArch 2020 the 15th Workshop on Mobility in the Evolving Internet Architecture, Part of Mobicom 2020",
publisher = "Association for Computing Machinery, Inc",
pages = "30--35",
booktitle = "MobiArch 2020 - Proceedings of the 2020 ACM MobiArch 2020 the 15th Workshop on Mobility in the Evolving Internet Architecture, Part of Mobicom 2020",
}