分布式多天线系统中的TDOA估计

doi:10.13190/jbupt.200706.18.027

北京邮电大学学报 ›› 2007, Vol. 30 ›› Issue (6): 18-22.doi: 10.13190/jbupt.200706.18.027

分布式多天线系统中的TDOA估计

张一衡1,2，崔琪楣1,2，张平1,2，陶小峰1,2

1. 北京邮电大学泛网无线通信教育部重点实验室，北京100876；2. 北京邮电大学无线新技术研究所，北京100876

收稿日期:2007-01-09 修回日期:1900-01-01 出版日期:2007-12-31 发布日期:2007-12-31
通讯作者: 张一衡

TDOA Estimation in the Distributed Multi-Antenna System

ZHANG Yi-heng1,2, CUI Qi-mei1,2, ZHANG Ping1,2, TAO Xiao-feng1,2

1. Key Laboratory of Universal Wireless Communications Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China; 2. Wireless Technology Innovation Institute, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2007-01-09 Revised:1900-01-01 Online:2007-12-31 Published:2007-12-31
Contact: ZHANG Yi-heng

摘要/Abstract

摘要：

在分布式多天线系统架构下提出一种估计到达时间差(TDOA)的新方法。利用分布式多天线系统的特性，通过构造具有良好自相关性的正交训练序列，将传统的TDOA测量问题转化为多径信号中首先到达径(FAP)的时延估计。数值仿真表明，与传统基于定时同步的TDOA估计方法相比，此方法能在无线多径传播环境中将非视距(NLOS)误差降低65%左右，从而显著提高TDOA的估计精度。

关键词: 分布式多天线系统, 无线蜂窝定位, 非视距, 到达时间差

Abstract:

Based on distributed multi-antenna system, a new method for time difference of arrival （TDOA） estimation in multipath environment is proposed. By utilizing advantages of distributed multi-antenna system, the traditional TDOA measurement is converted into the time delay estimation of the first arrival path (FAP) by constructing orthogonal training sequences. Comparing with the non-line-of-sight （NLOS） error induced by traditional timing and synchronization method, numerical simulations are carried out and the results show that the NLOS error imposed on the TDOA estimation can be reduced by 65% with the method proposed. Therefore, the TDOA estimation accuracy can be significantly enhanced.

Key words: distributed multi-antenna system； wireless location；non-line-of-sight, time difference of arrival

中图分类号:

TN929.5

张一衡1,2，崔琪楣1,2，张平1,2，陶小峰1,2. 分布式多天线系统中的TDOA估计[J]. 北京邮电大学学报, 2007, 30(6): 18-22.

ZHANG Yi-heng1,2, CUI Qi-mei1,2, ZHANG Ping1,2, TAO Xiao-feng1,2
. TDOA Estimation in the Distributed Multi-Antenna System[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2007, 30(6): 18-22.

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分布式多天线系统中的TDOA估计

TDOA Estimation in the Distributed Multi-Antenna System

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