Data-Aided Doppler Shift Estimation for TD-SCDMA System over Rician Channels

摘要：

In this paper, a new Doppler shift estimator is proposed for Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) over Rician channels. Different from other existing methods, the proposed estimator is developed based on the training sequence, i.e., midamble and the statistical properties of demodulation signal. By the help of a training sequence, the received line-of-sight (LOS) signal is first demodulated. Afterwards, its secondorder and fourth-order statistics are calculated. Then, by exploiting these statistical results, the Doppler shift estimator is obtained. The proposed estimator employs a smoothing function with corrective factor. By optimizing the corrective factor, an accuracy solution is acquired within the Doppler shift range of possibilities. Simulation results indicate that the proposed estimator is greatly reliable and effective to estimate Doppler shift up to 400 Hz.

关键词： TD-SCDMA Doppler shift estimation Rician fading LOS signal

作者: Junfeng Wang Jianfu Teng Yue Cui Xiurong Ma

作者单位: School of Electronics and Information Engineering Tianjin University Tianjin, China School of Computer and Communication Enginering Tianjin University of Technology Tianjin, China

会议类型: 国际会议

会议名称: 2010 International Conference on Signal and Information Processing(2010年IEEE信号与信息处理国际会议 ICSIP2010)

会议地点: 长沙

会议语种:英文

页码: 440-444

在线出版日期: 2010-12-14（万方平台首次上网日期，不代表论文的发表时间）