Title :
On correlation matching approaches to multipath parameter estimation in multiuser CDMA systems
Author :
Xu, Zhengyuan ; Tsarsanis, M.K.
Author_Institution :
Dept. of Electr. & Comput. Eng., Stevens Inst. of Technol., Hoboken, NJ, USA
Abstract :
In this paper, correlation matching techniques are employed to estimate multipath parameters for a multiuser CDMA system. We first parameterize the receiver´s output correlation matrix by different unknown channel parameters for all users. Then we match the correlation matrix against its sample average estimated from the received data. The Frobenious norm of the resulting error matrix is minimized to simultaneously obtain a closed form solution for all channel-parameters. Batch as well as adaptive algorithms are developed. The identifiability of the proposed technique is studied. Finally, some simulation results are presented to verify the proposed methods
Keywords :
AWGN channels; code division multiple access; correlation theory; multiuser channels; parameter estimation; spread spectrum communication; Frobenious norm; adaptive algorithms; batch algorithms; closed form solution; correlation matching approaches; error matrix; multipath parameter estimation; multiuser CDMA systems; receiver´s output correlation matrix; simulation; Adaptive algorithm; Closed-form solution; Delay; Detectors; Interference suppression; Multiaccess communication; Multipath channels; Parameter estimation; Statistics; Wireless networks;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 1999. SPAWC '99. 1999 2nd IEEE Workshop on
Conference_Location :
Annapolis, MD
Print_ISBN :
0-7803-5599-7
DOI :
10.1109/SPAWC.1999.783013
