Improved taylor-series location algorithm for cooperation networks  

作　　者：LIU Jun CUI Qi-mei TAO Xiao-feng 

机构地区：[1]Key Laboratory of Ubiquitous Wireless Communication, Beijing University of Posts and Telecommunications, Beijing 100876, China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2007年第2期38-44,共7页中国邮电高校学报（英文版）

摘　　要：This article presents an iterative algorithm for estimating the location of the destination mobile station （DS） when some extra mobile stations around the DS are involved in and assist the base stations to complete the localization process. The proposed method is based on the taylor-series （TS） method and jointly estimates both the DS and the extra mobile stations, named reference mobile station （RS） in this article, positions simultaneously. Moreover, the time-differential-of-arrival （TDOA） measurements between DS and pairs of RSs are obtained by ultra-wide-band （UWB） signal, which is adept in accurate ranging application. According to the theoretic analysis, the Cramer-Rao lower bound （CRLB） of the modified TS algorithm reduces significantly. The actual performance, under a given simulation scenario, is enhanced by 25% at best.This article presents an iterative algorithm for estimating the location of the destination mobile station （DS） when some extra mobile stations around the DS are involved in and assist the base stations to complete the localization process. The proposed method is based on the taylor-series （TS） method and jointly estimates both the DS and the extra mobile stations, named reference mobile station （RS） in this article, positions simultaneously. Moreover, the time-differential-of-arrival （TDOA） measurements between DS and pairs of RSs are obtained by ultra-wide-band （UWB） signal, which is adept in accurate ranging application. According to the theoretic analysis, the Cramer-Rao lower bound （CRLB） of the modified TS algorithm reduces significantly. The actual performance, under a given simulation scenario, is enhanced by 25% at best.

关 键 词：UWB CRLB TS TDOA least-square （LS） 

分 类 号：TN915.01[电子电信—通信与信息系统]