Journal of Communications and Networks

The Korean Institute of Commucations and Information Sciences (한국통신학회)
권호 표지
DOI QR코드

DOI QR Code

Power-Space Functions in High Speed Railway Wireless Communications

  • Dong, Yunquan (Department of Electrical and Computer Engineering, Seoul National University) ;
  • Zhang, Chenshuang (Department of Electronic Engineering, Beijing Institute of Technology) ;
  • Fan, Pingyi (Department of Electronic Engineering, Tsinghua University) ;
  • Fan, Pingzhi (Institute of Mobile Communications, Southwest Jiaotong University)
  • Received : 2014.07.02
  • Accepted : 2015.02.02
  • Published : 2015.06.30
⟨ Previous Next ⟩

Abstract

To facilitate the base station planning in high speed railway communication systems, it is necessary to consider the functional relationships between the base station transmit power and space parameters such as train velocity and cell radius. Since these functions are able to present some inherent system properties determined by its spatial topology, they will be referred to as the power-space functions in this paper. In light of the fact that the line-of-sight path persists the most power of the received signal of each passing train, this paper considers the average transmission rate and bounds on power-space functions based on the additive white Gaussian noise channel (AWGN) model. As shown by Monte Carlo simulations, using AWGN channel instead of Rician channel introduces very small approximation errors, but a tractable mathematical framework and insightful results. Particularly, lower bounds and upper bounds on the average transmission rate, as well as transmit power as functions of train velocity and cell radius are presented in this paper. It is also proved that to maintain a fixed amount of service or a fixed average transmission rate, the transmit power of a base station needs to be increased exponentially, if the train velocity or cell radius is increased, respectively.

Keywords

References

  1. Jinghu high speed railway, [Online]. Available: http://baike.baidu.com/view/141756.html
  2. High-speed rail, [Online]. Available: http://en.wikipedia.org/wiki/Highspeed_rail
  3. Y. Dong et al., "The deterministic time-linearity of service provided by fading channels," IEEE Trans.Wireless Commun., vol. 11, no. 5, pp. 1666-1675, May, 2012. https://doi.org/10.1109/TWC.2012.030812.102276
  4. C. Zhang et al., "Channel service based base station arrangement," High Mobility Wireless Commun., 2012.
  5. C. Zhang et al., "Service-based high-speed railway base station arrangment," Wireless Commun. Mobile Comput., 2013.
  6. T. Li et al., QoS-distinguished achievable rate region for high speed railway wireless communications. [Online]. Available: arXiv:1411.5784v1
  7. R. He et al., "Measurements and analysis of propagation channels in highspeed railway viaducts," IEEE Trans. Wireless Commun., vol. 12, no. 2, pp. 794-805, Feb., 2013. https://doi.org/10.1109/TWC.2012.120412.120268
  8. L. Liu et al., "Position-based modeling for wireless channel on highspeed railway under a viaduct at 2.35 GHz," IEEE J. Sel. Areas Commun., vol. 30, no. 4, pp. 834-845, May, 2012. https://doi.org/10.1109/JSAC.2012.120516
  9. V. Erceg et al., "Multiple-input multiple-output fixed wireless radio channel measurements and modeling using dual-polarized antennas at 2.5 GHz," IEEE Trans. Wireless Commun., vol. 3, no. 6, pp. 2288-2298, 2004. https://doi.org/10.1109/TWC.2004.837298
  10. Y. Dong, P. Fan, and K. B. Letaietif, "High speed railway wireless communications: Efficiency versus fairness," IEEE Trans. Veh. Technol., vol. 62, no. 2, pp. 925-930, Feb., 2014.
  11. T. Li et al., "How channel fadings affect the system service of high speed railway communications?," in Proc. HMWC, Nov. 2013, pp. 137-141.
  12. D. Tse and P. Vishwanath, Fundamentals of Wireless Communications. Cambridge University Press, 2005.