Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/15506
Title: A Closed-Loop Reciprocity Calibration Method for Massive MIMO in Terrestrial Broadcasting Systems
Authors: Cosmas, JP
Luo, H
Zhang, Y
Huang, L
Aggoun
Keywords: Terms—terrestrial broadcasting;DVB;massive MIMO;reciprocity calibration;hardware impairments
Issue Date: 2016
Citation: IEEE Transactions on Broadcasting, 2016, 63 (1), pp. 11 - 19
Abstract: Massive multi-input multi-output (MIMO) is believed to be an effective technique for future terrestrial broadcasting systems. Reciprocity calibration is one of the major practical challenges for massive MIMO systems operating in Time-Division Duplexing (TDD) mode. A new closed-loop reciprocity calibration method is investigated in this paper which can support online calibration with a higher accuracy compared to the existing methods. In the first part of the proposed method, an optimized relative calibration is introduced using the same structure of traditional relative calibration but with less impaired hardware in the reference radio chain. In the second part, a test device (TD) based calibration is proposed which makes online calibration possible. An experiment setup is built for the measurement of the BS hardware impairments and TD based calibration implementation. Simulation results and the error vector magnitude (EVM) of UE received signal after calibration show that the performance of our proposed method is improved significantly compared to the existing relative calibration methods.
URI: http://bura.brunel.ac.uk/handle/2438/15506
ISSN: 0018-9316
Appears in Collections:Dept of Social Sciences Media and Communications Research Papers



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