Adaptive Beam Splitting or Integrating Scheme for Railway Millimeter Wave Wireless Communications

YAN Li; FANG Xuming

doi:10.11999/JEIT150396

Volume 38 Issue 1

Jan. 2016

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YAN Li, FANG Xuming. Adaptive Beam Splitting or Integrating Scheme for Railway Millimeter Wave Wireless Communications[J]. Journal of Electronics & Information Technology, 2016, 38(1): 146-152. doi: 10.11999/JEIT150396

Citation:

YAN Li, FANG Xuming. Adaptive Beam Splitting or Integrating Scheme for Railway Millimeter Wave Wireless Communications[J]. Journal of Electronics & Information Technology, 2016, 38(1): 146-152. doi: 10.11999/JEIT150396

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Adaptive Beam Splitting or Integrating Scheme for Railway Millimeter Wave Wireless Communications

doi: 10.11999/JEIT150396

YAN Li¹,
FANG Xuming¹

Funds:

The National 973 Program of China (2012CB 316100), The National Natural Science Foundation of China (61471303), The Program for Development of Science and Technology of China Railway Corporation (Z2014- X002)

Received Date: 2015-04-08
Rev Recd Date: 2015-10-10
Publish Date: 2016-01-19

Abstract

Abstract

For future railway wireless communication networks, it is an effective way to adopt higher frequency spectra with broader bandwidth to enhance the transmission capacity. Nevertheless, massive beamforming techniques are needed to overcome the severe path loss of higher frequency spectra. For railway systems with dual on-vehicle receivers, dual-beam transmissions can be implemented to improve the capacity. The analysis results show that the optimization of dual-beam transmissions depends on the train position. Based on the above, an adaptive beam splitting or integrating communication scheme is proposed. When the train is far away from the base station, to avoid the inter-beam interference, an integrated beam with wider beamwidth is used to cover the two receivers to realize diversity receiving. As the train is approaching the center of the base station, two beams are generated to realize space multiplexing, to improve the transmission capacity and reliability. Numerical simulation results demonstrate that the proposed scheme can adapt to train positions and improve the transmission performance.
- Railway wireless communication,
- Beamforming,
- Beam-splitting or integrating,
- Multiplexing,
- Diversity

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References(24)

References

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