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Self-calibration for massive MIMO with channel reciprocity and channel estimation errors
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Mi, De, Zhang, Lei, Dianati, Mehrdad, Muhaidat, Sami, Xiao, Pei and Tafazolli, Rahim (2019) Self-calibration for massive MIMO with channel reciprocity and channel estimation errors. In: GLOBECOM 2018 - 2018 IEEE Global Communications Conference, Abu Dhabi, UAE, 9-13 Dec 2018. Published in: 2018 IEEE Global Communications Conference (GLOBECOM) pp. 1-7. doi:10.1109/GLOCOM.2018.8647759
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Official URL: http://dx.doi.org/10.1109/GLOCOM.2018.8647759
Abstract
In time-division-duplexing (TDD) massive multiple-input multiple-output (MIMO) systems, channel reciprocity is exploited to overcome the overwhelming pilot training and the feedback overhead. However, in practical scenarios, the imperfections in channel reciprocity, mainly caused by radio-frequency mismatches among the antennas at the base station side, can significantly degrade the system performance and might become a performance limiting factor. In order to compensate for these imperfections, we present and investigate two new calibration schemes for TDD-based massive multi-user MIMO systems, namely, relative calibration and inverse calibration. In particular, the design of the proposed inverse calibration takes into account a compound effect of channel reciprocity error and channel estimation error. We further derive closed-form expressions for the ergodic sum rate, assuming maximum ratio transmissions with the compound effect of both errors. We demonstrate that the inverse calibration scheme outperforms the traditional relative calibration scheme. The proposed analytical results are also verified by simulated illustrations.
Item Type: | Conference Item (Paper) | ||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||||
Journal or Publication Title: | 2018 IEEE Global Communications Conference (GLOBECOM) | ||||||
Publisher: | IEEE | ||||||
Book Title: | 2018 IEEE Global Communications Conference (GLOBECOM) | ||||||
Official Date: | 21 February 2019 | ||||||
Dates: |
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Page Range: | pp. 1-7 | ||||||
DOI: | 10.1109/GLOCOM.2018.8647759 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||
Conference Paper Type: | Paper | ||||||
Title of Event: | GLOBECOM 2018 - 2018 IEEE Global Communications Conference | ||||||
Type of Event: | Conference | ||||||
Location of Event: | Abu Dhabi, UAE | ||||||
Date(s) of Event: | 9-13 Dec 2018 |
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