Title :
A Distributed Multi-Antenna Based NLOS Error Elimination Algorithm for Mobile Localization
Author :
Mingyang, Shi ; Xiaofeng, Tao ; Yongtai, Xu ; Xiao, Han
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing
Abstract :
An important problem in wireless location systems especially in urban environment is the non-line-of-sight (NOLS) error. In this paper, we propose a novel NLOS error elimination algorithm based on distributed multi-antenna in time-of-arrival (TOA) location estimation. One important conclusion can be drawn by analyzing different scattering models: NLOS errors contained in TOA estimates which are measured by different antennas in one multi-antenna array have great correlation. We process these TOA measurements to estimate the position of scatterers which cause the NLOS propagation and to calculate NLOS errors contained in TOA measurements. Simulation results show that this algorithm can eliminate NLOS error effectively and improve the accuracy of TOA location algorithms in NLOS environments significantly.
Keywords :
antenna arrays; mobile antennas; mobile communication; time-of-arrival estimation; NLOS error elimination algorithm; distributed multiantenna arrays; location algorithms; mobile localization; nonline-of-sight error; scattering models; time-of-arrival location estimation; wireless location systems; Algorithm design and analysis; Antenna measurements; Base stations; FCC; Meteorology; Position measurement; Scattering; Telephone sets; Time measurement; Wireless communication;
Conference_Titel :
Circuits and Systems for Communications, 2008. ICCSC 2008. 4th IEEE International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1707-0
Electronic_ISBN :
978-1-4244-1708-7
DOI :
10.1109/ICCSC.2008.94
