Earticle

초록

영어

In this paper, the challenging problem of train localization is investigated. Precise localization of rail vehicles is a key element for development of more efficient and safe operation of high-speed railway. The localization task is formulated in a 3GPP LTE-based framework that enables us to derive the Doppler frequency offset of moving train, by exploitation of positioning reference signal (PRS) placed in the subframe, in Ricean channel. Then, a PRS-oriented train position approach is proposed. The PRS time difference of arrival from positioning references eNB1 and eNB2, is calculated by sequences cross correlation, and the train running curve is determined by inquiring about the line database of track section. Finally, the train position is evaluated by combining the information of PRS time difference of arrival and the train’s moving trajectory. In the simulation, the localization performance is well demonstrated, when two types of railway alignments, i.e., straight line and circle curve, are considered.

목차

Abstract
 1. Introduction
 2. Related Work
 3. System Model
  3.1. Moving Train and Frame Configuration
  3.2. Channel Model
 4. Moving Train Position Scheme
  4.1. Channel Model Doppler Shift Offset Estimation
  4.2. Moving Train Position
 5. Simulation
 6. Conclusions
 References

키워드

저자

• Cui-Ran Li [ School of Electronics and Information Engineering, Lanzhou Jiaotong University ]
• Jian-Li Xie [ School of Electronics and Information Engineering, Lanzhou Jiaotong University ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Future Generation Communication and Networking

• 간기

  격월간

• pISSN

  2233-7857

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605