A robust soft demapper algorithm for OFDM communication systems

In this article, we propose a noise-robust joint channel estimation and soft demapper algorithm for OFDM systems which is based on log-likelihood ratio calculation that taking into account multiplicative and additive error variance. The simulation results show that the proposed algorithm outperforms...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2020-09, Vol.919 (5), p.52001
Main Authors: Mityagin, K S, Levchenko, A S
Format: Article
Language:English
Subjects:
Algorithms
Communications systems
Likelihood ratio
Noise levels
Noise threshold
Robustness
Signal to noise ratio
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Summary:In this article, we propose a noise-robust joint channel estimation and soft demapper algorithm for OFDM systems which is based on log-likelihood ratio calculation that taking into account multiplicative and additive error variance. The simulation results show that the proposed algorithm outperforms conventional techniques, such as LMMSE channel estimation about 1.1-1.8 dB in threshold signal-to-noise ratio in different wireless mobile channels.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/919/5/052001