Uplink Frequency Offset Solution for LTE-Based High-Speed Railway Telecommunication System

Xiaohong Yu

doi:10.3969/j.issn.1000-0801.2014.03.006

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Uplink Frequency Offset Solution for LTE-Based High-Speed Railway Telecommunication System

Topic: 4G＆5G | 更新时间：2024-06-05

- Uplink Frequency Offset Solution for LTE-Based High-Speed Railway Telecommunication System
- Telecommunications Science Vol. 30, Issue 3, Pages: 27-31(2014)
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- DOI：10.3969/j.issn.1000-0801.2014.03.006
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- Published Online：2014-03，
  
  Published：20 March 2014
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Xiaohong Yu. Uplink Frequency Offset Solution for LTE-Based High-Speed Railway Telecommunication System[J]. Telecommunications science, 2014, 30(3): 27-31.
DOI：

Xiaohong Yu. Uplink Frequency Offset Solution for LTE-Based High-Speed Railway Telecommunication System[J]. Telecommunications science, 2014, 30(3): 27-31. DOI： 10.3969/j.issn.1000-0801.2014.03.006.

摘要

基于LTE的高速铁路宽带通信系统存在较大的多普勒频偏，严重影响了上行链路的接收性能。针对该问题，提出了在终端利用全球定位系统对设备进行晶振的校准，从而可以较准确地估计信号传输中的多普勒频移，进而对上行发送信号进行频偏预补偿，同时在接收端通过导频对频偏进行进一步的处理。仿真结果显示，该方案可以较好地克服高铁系统中上行链路多普勒频偏的影响，提高上行链路的接收性能。

Abstract

Doppler frequency offset can severely impact the performance of uplink in LTE-based high-speed railway telecommunication system. Frequency offset pre-compensation in transmitter combined with residual frequency offset compensation in receiver was proposed to solve this problem. The simulation results demonstrate that this scheme can improve the uplink performance for high-speed railway telecommunication system.

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references

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