Performance analysis of an indoor UWB ranging system  

作　　者：Zhang Tingting Zhang Qinyu Zhang Naitong Xu Hongguang 

机构地区：[1]School of Electrical and Information, Harbin Inst. of Technology, Harbin 150001, P. R. China [2]Harbin Inst. of Technology Shenzhen Graduate School, Shenzhen 518055, P. R. China

出　　处：《Journal of Systems Engineering and Electronics》2009年第3期450-456,共7页系统工程与电子技术（英文版）

基　　金：supported by the Key Program of the National Natural Science Foundation of China(60432040);the Program of National Natural Science Foundation of China(60702034).

摘　　要：To evaluate the ranging performance of impulse radio ultra wideband （IR-UWB） signals, an experiment is performed in a typical indoor environment. In order to mitigate the ranging error caused by theoretical algorithm and practical circuits, one way-time difference of the arrival （OW-TDOA） ranging method and corresponding approaches are proposed and carried out according to the structure of UWB transceivers. Generalized maximum likelihood （GML） estimator based on energy detection is applied for the time of arrival estimation. The obtained results show that this UWB ranging system can achieve a relative high ranging accuracy in a multipath environment （e.g. about 5 cm at ranges up to 6 m）, which is practical and meaningful for many sensor applications.To evaluate the ranging performance of impulse radio ultra wideband （IR-UWB） signals, an experiment is performed in a typical indoor environment. In order to mitigate the ranging error caused by theoretical algorithm and practical circuits, one way-time difference of the arrival （OW-TDOA） ranging method and corresponding approaches are proposed and carried out according to the structure of UWB transceivers. Generalized maximum likelihood （GML） estimator based on energy detection is applied for the time of arrival estimation. The obtained results show that this UWB ranging system can achieve a relative high ranging accuracy in a multipath environment （e.g. about 5 cm at ranges up to 6 m）, which is practical and meaningful for many sensor applications.

关 键 词：RANGING impulse radio ultra wideband time of arrival energy detection MULTIPATH 

分 类 号：TN92[电子电信—通信与信息系统] V556[电子电信—信息与通信工程]