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Journal of Electrical and Computer Engineering
Volume 2010, Article ID 536057, 5 pages
http://dx.doi.org/10.1155/2010/536057
Research Article

Pilot-Aided Sequential Monte Carlo Estimation of Phase Distortions and Transmitted Symbols in Multicarrier Systems

1Signal Processing Laboratory, Engineering Department, Cambridge University, CB2 1PZ Cambridge, UK
2LAGIS UMR CNRS 8146, TELECOM Lille1, Institut TELECOM, 59658 Villeneuve d'Ascq, France
3IEMN-DOAE UMR 8520, U.V.H.C., Le Mont Houy, 59313 Valenciennes Cedex 9, France

Received 16 June 2009; Accepted 14 September 2009

Academic Editor: Alfred Hanssen

Copyright © 2010 François Septier et al. 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.

Abstract

We address the challenging problem of the joint estimation of transmitted symbols and phase distortions in standardized multicarrier systems, including pilot or virtual subcarriers. These subcarriers create time correlation on the useful transmitted OFDM signal that we propose to take into account by an autoregressive model. Because the phase distortions are nonlinear, we set the joint estimation algorithm on the framework of the Sequential Monte Carlo methods. Simulation results are provided in terms of bit error rate (BER) and mean square error (MSE); they highlight the efficiency and the robustness of the estimator.