Title :
Robust multipath resolving in fading conditions for mobile-positioning systems
Author :
Yousef, Nabil R. ; Sayed, Ali H.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
Infrastructure-based mobile-positioning is receiving increasing attention in the field of wireless communications. This is is due to an order issued by the Federal Communications Commission (FCC) that mandates all wireless service providers to locate an emergency 911 caller within a high accuracy. Overlapping multipath propagation is one of the main sources of mobile-positioning errors, especially in fast channel fading situations. We present a mathematical framework for overlapping multipath propagation over fading channels, which leads to developing a block least squares method for overlapping multipath resolving
Keywords :
Rayleigh channels; cellular radio; code division multiple access; deconvolution; emergency services; filtering theory; least squares approximations; matched filters; multipath channels; radio direction-finding; radiowave propagation; CDMA; FCC; Federal Communications Commission; Rayleigh fading channel; bias equalization; block least squares method; cellular systems; emergency 911 caller location; fading conditions; fast channel fading; infrastructure-based mobile-positioning; least-squares deconvolution; matched filtering; mobile-positioning errors; mobile-positioning systems; overlapping multipath propagation; parameter optimization; robust multipath resolving; wireless communications; wireless service providers; Adaptive systems; Amplitude estimation; Delay estimation; FCC; Fading; Least squares methods; Nonlinear systems; Pulse measurements; Robustness; Shape measurement;
Conference_Titel :
Radio Science Conference, 2000. 17th NRSC '2000. Seventeenth National
Conference_Location :
Minufiya
Print_ISBN :
977-5031-64-8
DOI :
10.1109/NRSC.2000.838948
