Title :
Adaptive multipath resolving for wireless location systems
Author :
Yousef, Nabil R. ; Sayed, Ali H.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
We develop an adaptive technique for resolving overlapping multipath components. The technique relies on replacing the least-squares operation needed for resolving overlapping components by a gradient-based adaptive filter with projections. The projections are designed to incorporate a-priori channel information and improve the algorithm robustness against data ill-conditioning and high noise levels, which are common in wireless location applications.
Keywords :
adaptive filters; adaptive signal processing; cellular radio; fading channels; filtering theory; gradient methods; multipath channels; radio direction-finding; signal resolution; adaptive multipath resolution; adaptive projection technique; algorithm robustness; cellular users; channel information; computer simulations; data ill-conditioning; emergency situations; fading channel; gradient-based adaptive filter; high noise levels; hybrid channel; mobile-positioning; overlapping multipath components; projections; wireless location systems; Adaptive filters; Adaptive systems; Algorithm design and analysis; Amplitude estimation; Data mining; Delay estimation; Fading; Noise level; Noise robustness; Rayleigh channels;
Conference_Titel :
Signals, Systems and Computers, 2001. Conference Record of the Thirty-Fifth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-7803-7147-X
DOI :
10.1109/ACSSC.2001.987739
