基于LTE的高速铁路宽带通信上行频偏解决方案

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....

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Bibliographic Details
Published in电信科学 Vol. 30; no. 3; pp. 27 - 31
Main Author 于小红
Format Journal Article
LanguageChinese
Published 中国通信学会 01.03.2014
人民邮电出版社有限公司
普天信息技术研究院有限公司 北京100080
Subjects
LTE
多普勒频偏
频偏预补偿
高速铁路
LTE
频偏预补偿
高速铁路
多普勒频偏
frequency offset pre-compensation
long term evolution
Doppler frequency offset
high-speed railway
Online AccessGet full text
ISSN1000-0801
DOI10.3969/j.issn.1000-0801.2014.03.006

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Summary: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.
Bibliography:high-speed railway, Doppler frequency offset, long term evolution, frequency offset pre-compensation
Yu Xiaohong （Potevio Institute of Technology Co., Ltd., Beijing 100080, China）
11-2103/TN
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.
ISSN:1000-0801
DOI:10.3969/j.issn.1000-0801.2014.03.006