Iterative decoding in Factor Graph representation using Particle Filtering

作者：Tienda Luna Isabel M; Ruiz Diego P^*; Huang Yufei; Carrion Maria C

来源：Digital Signal Processing, 2012, 22(2): 212-218.

DOI：10.1016/j.dsp.2011.07.003

• Particle Filtering
• Bayesian methods
• LDPC codes
• Factor Graph
• Sum-Product algorithm

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.

• 出版日期2012-3