Title :
Maximum a posteriori multipath fading channel estimation for CDMA systems
Author :
Siala, Mohamed ; Duponteil, Daniel
Author_Institution :
France Telecom, Issy Moulineaux, France
Abstract :
We propose an optimum channel estimation algorithm for DS-CDMA systems. This algorithm performs an iterative estimation of the channel according to the maximum a posteriori criterion, using the expectation-maximization algorithm. It requires a convenient representation of the discrete multipath fading channel based on the Karhunen-Loeve orthogonal expansion theorem
Keywords :
Karhunen-Loeve transforms; Rayleigh channels; code division multiple access; correlators; decoding; iterative methods; land mobile radio; maximum likelihood estimation; multipath channels; multiuser channels; optimisation; radio links; radio receivers; spread spectrum communication; DS-CDMA systems; Karhunen-Loeve orthogonal expansion theorem; MAP multipath fading channel estimation; RAKE receiver; Rayleigh fading; UMTS UTRA/FDD uplink; discrete multipath Doppler channel; discrete multipath fading channel; expectation-maximization algorithm; information symbols decoding; iterative estimation; optimum channel estimation algorithm; signal model; simulation results; 3G mobile communication; Channel estimation; Correlators; Expectation-maximization algorithms; Fading; Iterative algorithms; Multiaccess communication; Multipath channels; Multiple access interference; Phase shift keying;
Conference_Titel :
Vehicular Technology Conference, 1999 IEEE 49th
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-5565-2
DOI :
10.1109/VETEC.1999.780522
