Belief propagation with gaussian approximation for joint channel estimation and decoding

Yang Liu, Loïc Brunel, Joseph Boutros

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

In order to increase the performance of joint channel estimation and decoding through belief propagation on factor graphs, we approximate the distribution of channel estimate in the factor graph as a mixture of Gaussian distributions. The result is a continuous downward and upward message propagation in the factor graph instead of discrete probability distributions. Using continuous downward messages, the computation complexity of belief propagation is reduced without performance degradation. With both continuous upward and downward messages, belief propagation almost achieves the same performance as expectation-maximization under good initialization and outperforms it under bad initialization.

Original languageEnglish
Title of host publication2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008
DOIs
Publication statusPublished - 1 Dec 2008
Event2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008 - Poznan, Poland
Duration: 15 Sep 200818 Sep 2008

Other

Other2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008
CountryPoland
CityPoznan
Period15/9/0818/9/08

Fingerprint

Gaussian distribution
Channel estimation
Probability distributions
Decoding
Degradation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Liu, Y., Brunel, L., & Boutros, J. (2008). Belief propagation with gaussian approximation for joint channel estimation and decoding. In 2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008 [4699839] https://doi.org/10.1109/PIMRC.2008.4699839

Belief propagation with gaussian approximation for joint channel estimation and decoding. / Liu, Yang; Brunel, Loïc; Boutros, Joseph.

2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008. 2008. 4699839.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Liu, Y, Brunel, L & Boutros, J 2008, Belief propagation with gaussian approximation for joint channel estimation and decoding. in 2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008., 4699839, 2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008, Poznan, Poland, 15/9/08. https://doi.org/10.1109/PIMRC.2008.4699839
Liu Y, Brunel L, Boutros J. Belief propagation with gaussian approximation for joint channel estimation and decoding. In 2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008. 2008. 4699839 https://doi.org/10.1109/PIMRC.2008.4699839
Liu, Yang ; Brunel, Loïc ; Boutros, Joseph. / Belief propagation with gaussian approximation for joint channel estimation and decoding. 2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008. 2008.
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