Iterative decoding in Factor Graph representation using Particle Filtering

Authors:
Isabel M. Tienda-Luna;Diego P. Ruiz;Yufei Huang;María C. Carrión
Affiliations:
Departamento de Electrónica y Tecnología de Computadores, Universidad de Granada, Granada, Spain;Departamento de Física Aplicada, Universidad de Granada, Granada, Spain;Department of Electrical Engineering at the University of Texas at San Antonio, San Antonio, TX, United States;Departamento de Física Aplicada, Universidad de Granada, Granada, Spain
Venue:
Digital Signal Processing
Year:
2012

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Abstract

In this paper, we study iterative decoding over channels with phase noise in Digital Communications. A Factor Graph representation is used for the system under study and a message-passing algorithm is derived. To reduce the complexity of such an algorithm, several methods have been proposed in the literature. One consists of a discretization of the phase space using a fixed number of equally spaced values. In this paper, we propose a Particle-Filtering approach that reduces the complexity and performs better than does the Equally Spaced Discretization.