CAO Yuan, WEN Yinghong, XU Wei, XIE Xin. Directional Beamforming for High-Speed Railway Communications with Frequency Offset Precorrection[J]. Chinese Journal of Electronics, 2014, 23(1): 163-168.
Citation: CAO Yuan, WEN Yinghong, XU Wei, XIE Xin. Directional Beamforming for High-Speed Railway Communications with Frequency Offset Precorrection[J]. Chinese Journal of Electronics, 2014, 23(1): 163-168.

Directional Beamforming for High-Speed Railway Communications with Frequency Offset Precorrection

Funds:  This work is supported by the Fundamental Research Funds for the Central Universities (No.2012JBM023), the State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University (No.RCS2011K003), the 973 program (No.2013CB329204), the National Natural Science Foundation of China (No.61101087), and the Specialized Research Fund for the Doctoral Program of Higher Education (No.20110092120011, No.20120009120004).
  • Received Date: 2013-02-01
  • Rev Recd Date: 2013-03-01
  • Publish Date: 2014-01-05
  • This paper considers a multi-antenna transmission strategy for high speed railway communications. In order to achieve better performance than conventional space-frequency block coding schemes, we propose a directional beamforming strategy for the High-speed railway (HSR) communication by exploiting some characteristic of the railway system including predetermined moving tracks and real-time positioning information. Moreover, for alleviating the effect of Doppler shift due to the moving train, a frequency offset precorrection method is also incorporated with direction beamforming. Theoretical Signalto-;noise ratio (SNR) gain of the proposed beamforming scheme over traditional HSR communication schemes is also derived for illustrating the performance enhancement. Numerical results verify the effectiveness of our proposed scheme even with some kind of imperfect position information available at the transmitter.
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