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A closed-loop reciprocity calibration method for massive MIMO in terrestrial broadcasting systems

  • Hua Luo
    ,
  • Yue Zhang
    ,
  • Li-Ke Huan
    ,
  • John Cosmas
    ,
  • Amar Aggoun
  • Cobham Wireless
    ,
  • Brunel University London
Research Output: Contribution to journal Article Peer-review

Open access

Abstract

Massive multi-input multioutput (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 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 base station hardware impairments and TD-based calibration implementation. Simulation results and the error vector magnitude of UE received signal after calibration show that the performance of our proposed method is improved significantly compared to the existing relative calibration methods.

Publication Information

Output type

Research Output: Contribution to journal Article Peer-review

Original language

English

Pages from-to (Number of pages)

Pages 11-19

Journal (Volume, Issue Number)

IEEE Transactions on Broadcasting (Volume PP, Issue 99)

Publication milestones

  • Accepted/In press - 09/08/2016
  • Published - 22/09/2016

Publication status

Published - 22/09/2016

ISSN

0018-9316

External Publication IDs

  • handle.net: 10547/622038
  • Scopus: 85017624083

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