Title :
CDMA sparse channel estimation using a GSIC/AM algorithm for radiolocation
Author :
Kim, Sunwoo ; Pals, Timothy ; Iltis, Ronald A. ; Lee, Hua
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
Abstract :
This paper considers channel parameter estimation in a sparse channel environment for radiolocation. The generalized successive interference cancellation (GSIC) algorithm is used to eliminate the multiple access interference (MAI). To adapt GSIC to sparse channels the alternating maximization (AM) algorithm is considered and the continuous time delay of each path is estimated. The time-of-arrival (TOA) of the first arrival ray is treated as the line-of-sight component. The TOAs from multiple reference nodes to a master node are then used to compute master node position.
Keywords :
4G mobile communication; channel estimation; delays; interference suppression; multipath channels; multiuser detection; optimisation; radio direction-finding; radiofrequency interference; CDMA networks; CDMA sparse channel estimation; GSIC/AM algorithm; alternating maximization algorithm; channel parameter estimation; code division multiple access; continuous time delay; fourth generation wireless-based services; generalized successive interference cancellation; line-of-sight component; master node position; multipath channel simulation; multiple access interference; multiple reference nodes; radiolocation; time-of-arrival; Channel estimation; Delay effects; Delay estimation; Frequency estimation; Interference cancellation; Multiaccess communication; Multiple access interference; Parameter estimation; Power control; Protocols;
Conference_Titel :
Signals, Systems and Computers, 2002. Conference Record of the Thirty-Sixth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-7803-7576-9
DOI :
10.1109/ACSSC.2002.1197024
