Estimation of multiple delays in a slowly fading channel

Author

Selva, Jesuús

Author_Institution

Inst. of Commun. & Navigation, German Aerosp. Centre, Wessling, Germany

Volume

4

fYear

2003

fDate

6-10 April 2003

Abstract

The time-of-arrival estimation of several short delayed replicas of a known signal in a single antenna receiver is an ill-conditioned problem, which improves if the amplitudes are not completely static. We present a signal model that includes slow amplitude variations using a Karhunen-Loeve expansion, and the corresponding maximum likelihood estimator. The results show that a clear performance improvement in the delay estimation can be achieved by including these variations in the model.

Keywords

delay estimation; fading channels; maximum likelihood estimation; radio receivers; signal processing; Karhunen-Loeve expansion; amplitude variations; maximum likelihood estimation; multiple delay estimation; signal model; single antenna receiver; slowly fading channel; time-of-arrival estimation; Artificial satellites; Content addressable storage; Delay estimation; Fading; Maximum likelihood estimation; Receiving antennas; Satellite navigation systems; Signal processing; Time of arrival estimation; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03). 2003 IEEE International Conference on

ISSN

1520-6149

Print_ISBN

0-7803-7663-3

Type

conf

DOI

10.1109/ICASSP.2003.1202716

Filename

1202716