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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| Published in | 电信科学 Vol. 30; no. 3; pp. 27 - 31 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| 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 | |
| Online Access | Get full text |
| ISSN | 1000-0801 |
| DOI | 10.3969/j.issn.1000-0801.2014.03.006 |
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| Abstract | 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. |
|---|---|
| AbstractList | 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. |
| Author | 于小红 |
| AuthorAffiliation | 普天信息技术研究院有限公司,北京100080 |
| AuthorAffiliation_xml | – name: 普天信息技术研究院有限公司 北京100080 |
| Author_FL | Yu Xiaohong |
| Author_FL_xml | – sequence: 1 fullname: Yu Xiaohong |
| Author_xml | – sequence: 1 fullname: 于小红 |
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| DocumentTitleAlternate | Uplink Frequency Offset Solution for LTE-Based High-Speed Railway Telecommunication System |
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| Keywords | 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 |
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| Notes | 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. |
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| PublicationTitle | 电信科学 |
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| PublicationYear | 2014 |
| Publisher | 中国通信学会 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 |
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| SubjectTerms | LTE 多普勒频偏 频偏预补偿 高速铁路 |
| Title | 基于LTE的高速铁路宽带通信上行频偏解决方案 |
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