Open Access

Frequency Estimation in Iterative Interference Cancellation Applied to Multibeam Satellite Systems

EURASIP Journal on Wireless Communications and Networking20072007:062310

https://doi.org/10.1155/2007/62310

Received: 31 August 2006

Accepted: 13 May 2007

Published: 4 July 2007

Abstract

This paper deals with interference cancellation techniques to mitigate cochannel interference on the reverse link of multibeam satellite communication systems. The considered system takes as a starting point the DVB-RCS standard with the use of convolutional coding. The considered algorithm consists of an iterative parallel interference cancellation scheme which includes estimation of beamforming coefficients. This algorithm is first derived in the case of a symbol asynchronous channel with time-invariant carrier phases. The aim of this article is then to study possible extensions of this algorithm to the case of frequency offsets affecting user terminals. The two main approaches evaluated and discussed here are based on (1) the use of block processing for estimation of beamforming coefficients in order to follow carrier phase variations and (2) the use of single-user frequency offset estimations.

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Authors’ Affiliations

(1)
TéSA
(2)
Institut de Recherche en Informatique de Toulouse, Ecole Nationale Supérieure d'Electrotechnique, d'Electronique, d'Informatique, d'Hydraulique et des Télécommunications
(3)
Centre National d'Etudes Spatiales
(4)
Ecole Nationale Supérieure des Télécommunications
(5)
Alcatel Alenia Space

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Copyright

© J. P. Millerioux et al. 2007

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.