Title :
Detection of fading overlapping multipath components for mobile positioning systems
Author :
Yousef, Nabil R. ; Sayed, Ali H.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
The Federal Communications Commission (FCC) mandate for locating the position of wireless 911 callers is fueling research in the area of mobile-positioning technologies. Overlapping multipath propagation is one of the main sources of mobile-positioning errors, especially in fast channel fading situations. In this paper we develop a technique for detecting and providing an estimate of the number of overlapping fading multipath components. Such information is vital for accurate resolution of overlapping multipath components as well as avoiding unnecessary computations and errors in single-path propagation cases. The proposed technique exploits the fact that multipath components fade independently as well as the pulse shape symmetry. The paper also presents supporting simulation results
Keywords :
cellular radio; fading channels; multipath channels; radiowave propagation; signal detection; FCC mandate; Federal Communications Commission; emergency 911 situations; fast channel fading; mobile positioning systems; overlapping fading multipath components detection; overlapping multipath propagation; position location; positioning errors; pulse shape symmetry; simulation results; wireless 911 callers; Amplitude estimation; Computer errors; Delay effects; Delay estimation; FCC; Fading; Government; Multiaccess communication; Pulse shaping methods; Shape;
Conference_Titel :
Communications, 2001. ICC 2001. IEEE International Conference on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-7097-1
DOI :
10.1109/ICC.2001.937243
