Title :
Adaptive angle of arrival estimation for multiuser wireless location systems
Author :
Khajehnouri, Nima ; Sayed, Ali H.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
Reliable positioning of CDMA cellular users in a mobile environment relies on accurate knowledge of the time-of-arrival (TOA) and angle-of-arrival (AOA) of the first arriving ray. An adaptive procedure is developed for AOA estimation under multipath and multiuser conditions. Simulations illustrate how the adaptive solution improves location accuracy.
Keywords :
adaptive antenna arrays; adaptive estimation; cellular radio; code division multiple access; multipath channels; multiuser channels; telecommunication network reliability; time-of-arrival estimation; AOA; CDMA cellular user; TOA; adaptive estimation; angle-of-arrival; code division multiple access; mobile environment; multipath-multiuser condition; reliable position; time-of-arrival; wireless location system; Antenna arrays; Array signal processing; Base stations; Directive antennas; Filters; Interference suppression; Multiaccess communication; Multiple signal classification; Receiving antennas; Transmitting antennas;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 2004 IEEE 5th Workshop on
Print_ISBN :
0-7803-8337-0
DOI :
10.1109/SPAWC.2004.1439304
