Reciprocity calibration methods for Massive MIMO based on antenna coupling
Författare
Summary, in English
In this paper we consider time-division-duplex (TDD) reciprocity calibration of a massive MIMO system. The calibration of a massive MIMO system can be done entirely at the base station (BS) side by sounding the BS antennas one-by-one while receiving with the other BS antennas. With an M antenna BS, this generates M(M - 1) signals that can be used for calibration purposes. In this paper we study several least-squares (LS) based estimators, differing in the number of received signals that are being used. We compare the performance of the estimators, and we conclude that is possible to accurately calibrate an entire BS antenna array using the mutual coupling
between antennas as the main propagation mechanism.
between antennas as the main propagation mechanism.
Avdelning/ar
Publiceringsår
2014
Språk
Engelska
Fulltext
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Dokumenttyp
Konferensbidrag
Ämne
- Electrical Engineering, Electronic Engineering, Information Engineering
Nyckelord
- Massive MIMO
- TDD reciprocity
- antenna calibration
- estimation
Conference name
IEEE Globecom 2014
Conference date
2014-12-08 - 2014-12-08
Conference place
Austin, Texas, United States
Status
Published