北京交通大学学报2012，Vol.36Issue(5)：51-56,6.
高速铁路环境下TD-SCDMA系统的多普勒频偏校正算法
Doppler frequency offset compensation in high speed railways for TD-SCDMA systems
摘要
Abstract
Under high-speed railway environments, the performance of wireless communications systems is severely degraded due to large Doppler frequency offset. In order to mitigate the effect of significant Doppler frequency offset, a performance enhanced pre-offset compensation strategy is presented with Doppler frequency offset estimation and precorrection in TD-SCDMA systems. Specifically, by using the structural characteristics of the uplink midamble, the proposed method estimates Doppler frequency offset in the uplink timeslot. Then, the base station precorrects the Doppler frequency offset of the downlink timeslot based on the reciprocity property of TD-SCDMA systems. Simulation results demonstrate that the proposed algorithm significantly improves the performance of high speed railway wireless communication systems.关键词
多普勒频偏/TD-SCDMA/预校正/高速铁路/训练序列Key words
Doppler frequency offset/ TD-SCDMA/precorrection/ high speed railway/ midamble分类
信息技术与安全科学引用本文复制引用
巩晓群,曹源,谢鑫,姜明,许威..高速铁路环境下TD-SCDMA系统的多普勒频偏校正算法[J].北京交通大学学报,2012,36(5):51-56,6.基金项目
国家自然科学基金资助项目(61101087) （61101087）
高等学校博士学科点专项科研基金资助课题(20110092120011) （20110092120011）
轨道交通控制与安全国家重点实验室(北京交通大学)开放课题基金资助(RCS2011K003) （北京交通大学）
中央高校基本科研业务费专项资金资助(2012JBM023) （2012JBM023）
