Estimation of LEO satellite channels

Author

Davis, Linda M. ; Collings, Iain B. ; Evans, Robin J.

Author_Institution

Dept. of Electr. & Electron. Eng., Melbourne Univ., Parkville, Vic., Australia

Volume

1

fYear

1997

fDate

9-12 Sep 1997

Firstpage

15

Abstract

In this paper, we propose a new channel estimation algorithm for low Earth orbit satellite digital communications. Low Earth orbit satellite channels impart severe spreading in delay and Doppler on the transmitted signal. We model the channel as a tapped-delay-line filter with time-varying complex coefficients. The time evolution of the taps is described by an auto-regressive model. A coupled filter using recursive prediction error methods is proposed for estimating the parameters of the channel. Its performance is demonstrated via simulations

Keywords

FIR filters; autoregressive processes; delay lines; digital radio; error analysis; mobile satellite communication; prediction theory; recursive estimation; recursive filters; time-varying channels; Doppler; LEO satellite channel; auto-regressive model; channel estimation; coupled filter; delay; low Earth orbit satellite digital communications; performance; recursive prediction error; tapped-delay-line filter; time evolution; time-varying complex coefficients; Delay; Fading; Finite impulse response filter; Intersymbol interference; Low earth orbit satellites; Parameter estimation; Rayleigh channels; Recursive estimation; Satellite communication; Shadow mapping;

fLanguage

English

Publisher

ieee

Conference_Titel

Information, Communications and Signal Processing, 1997. ICICS., Proceedings of 1997 International Conference on

Print_ISBN

0-7803-3676-3

Type

conf

DOI

10.1109/ICICS.1997.647048

Filename

647048