Maximum a posteriori multipath fading channel estimation for CDMA systems

Author

Siala, Mohamed ; Duponteil, Daniel

Author_Institution

France Telecom, Issy Moulineaux, France

Volume

2

fYear

1999

fDate

36342

Firstpage

1121

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1999 IEEE 49th

Conference_Location

Houston, TX

ISSN

1090-3038

Print_ISBN

0-7803-5565-2

Type

conf

DOI

10.1109/VETEC.1999.780522

Filename

780522