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Antenna calibration technique based on channel prediction in time-varying TDD-MIMO system

Author

Listed:
  • Song, Lijun
  • Xia, Lei
  • Jin, Maozhu

Abstract

The traditional antenna calibration for time division duplex multiple input multiple output (TDD-MIMO) systems assume that free-space channel keeps constant during calibration, which is unreasonable under the high-speed rail and other time-varying channel scenarios for time variability can cause calibration error. This paper analyzes the performance of traditional antenna calibration methods, and then proposes an antenna calibration method based on Wiener channel prediction for time-varying TDD-MIMO system. Through theoretical derivation, we get the capacity formula of the TDD-MIMO system using traditional antenna calibration and antenna calibration based on channel prediction. The theoretical analysis and simulation results both indicate that the performance degradation of antenna calibration can be caused by time-varying channel and the prediction algorithm proposed in the paper can well compensate for the performance loss and significantly improve the antenna calibration performance for time-varying TDD-MIMO system.

Suggested Citation

  • Song, Lijun & Xia, Lei & Jin, Maozhu, 2016. "Antenna calibration technique based on channel prediction in time-varying TDD-MIMO system," Chaos, Solitons & Fractals, Elsevier, vol. 89(C), pages 255-262.
    • Handle: RePEc:eee:chsofr:v:89:y:2016:i:c:p:255-262
    DOI: 10.1016/j.chaos.2015.11.016
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