MATEC Web Conf.
Volume 309, 20202019 International Conference on Computer Science Communication and Network Security (CSCNS2019)
|Number of page(s)||8|
|Published online||04 March 2020|
Rate-compatible LDPC convolutional codes over non-gaussian noise channel
School of Physics and Telecommunications Engineering, South China Normal University, Guangzhou, Guangdong, 510006, China
* Corresponding author: email@example.com
This paper is aimed to study the characteristics of the underwater acoustic channel with non-Gaussian noise channel. And Gaussian mixture model (GMM) is utilized to fit the background noise over the non-Gaussian noise channel. Furthermore, coding techniques which use a sequence of rate-compatible low-density parity-check (RC-LDPC) convolutional codes with separate rates are constructed based on graph extension method. The performance study of RC-LDPC convolutional codes over non-Gaussian noise channel and the additive white Gaussian noise (AWGN) channel is performed. Study implementation of simulation is that modulation with binary phase shift keying (BPSK), and iterative decoding based on pipeline log-likelihood rate belief propagation (LLRBP) algorithm. Finally, it is shown that RC-LDPC convolutional codes have good bit-rate-error (BER) performance and can effectively reduce the impact of noise.
Key words: Non-gaussian noise / Gaussian mixture model (GMM) / Rate-compatible low-density parity-check (RC-LDPC) convolutional codes
© The Authors, published by EDP Sciences, 2020
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