Enhanced Timing Advanced Estimation With Symmetric Zadoff-Chu Sequences for Satellite Systems

被引：33

作者：

Cui, Gaofeng ^{[1
,2
]}

He, Yizhou ^{[1
,2
]}

Li, Pengxu ^{[1
,2
]}

Wang, Weidong ^{[1
,2
]}

机构：

[1] Beijing Univ Posts & Telecommun, Sch Elect Engn, Beijing 100876, Peoples R China

[2] Sci & Technol Informat Transmiss & Disseminat Com, Shijiazhuang 050081, Peoples R China

来源：

IEEE COMMUNICATIONS LETTERS | 2015年 / 19卷 / 05期

关键词：

Timing advanced; Zadoff-Chu; frequency offset; satellite; RANDOM-ACCESS;

D O I：

10.1109/LCOMM.2015.2411610

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

Timing advanced estimation with Zadoff-Chu sequences is sensitive to the frequency offset, especially for satellite systems with large Doppler shift and oscillator uncertainties. In this letter, Timing Advanced Estimation with Symmetric Zadoff-Chu sequences (TAE-SZC) is proposed to deal with the integer and fractional frequency offset, respectively. By adopting TAE-SZC, the effect of integer frequency offset can be resolved by the symmetric properties of Zadoff-Chu sequences, and an iterative compensation method is used to mitigate the effect of fractional frequency offset. Simulation results show that TAE-SZC outperforms the conventional timing advanced estimation methods without incurring additional consumption of time/frequency resource.

引用

页码：747 / 750

页数：4

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