Multiuser DA-ML estimation of multipath channel delays for a DS-CDMA uplink

Author

Guenach, M. ; Vandendorpe, L.

Author_Institution

Commun. & Remote Sensing Lab., Univ. Catholique de Louvain, Belgium

Volume

2

fYear

2000

fDate

2000

Firstpage

1112

Abstract

This paper deals with the synthesis and the performance analysis of multiuser delay estimators of multipath channels according to the maximum likelihood (ML) criterion in data aided (DA) mode for a BPSK DS-CDMA uplink. We suppose the channel tap weights are known perfectly, and we are interested in the estimation of the path delays. We perform open-loop (S-curve) and closed loop mean squared estimated error (MSEE) analysis in tracking mode and we compare the results to the classical Cramer-Rao lower bound (CRLB)

Keywords

code division multiple access; delay estimation; maximum likelihood estimation; mean square error methods; multipath channels; multiuser channels; phase shift keying; spread spectrum communication; BPSK; DS-CDMA uplink; MSEE analysis; S-curve mean squared estimated error analysis; channel tap weights; closed loop mean squared estimated error analysis; data aided mode; maximum likelihood criterion; multipath channel delays; multiuser DA-ML estimation; multiuser delay estimators; open-loop mean squared estimated error analysis; path delays; performance analysis; synthesis; tracking mode; Additive noise; Additive white noise; Delay estimation; Gaussian noise; Maximum likelihood estimation; Multiaccess communication; Multipath channels; Performance analysis; Timing; Tracking loops;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2000. PIMRC 2000. The 11th IEEE International Symposium on

Conference_Location

London

Print_ISBN

0-7803-6463-5

Type

conf

DOI

10.1109/PIMRC.2000.881592

Filename

881592