A systematic approach for achieving low bit error rate of LDPC decoder using MWD algorithm

Wahane, Shruti; Kakde, Sandeep; Khobragade, Atish; Elmedany, Wael

doi:10.1109/wispnet.2017.8299713

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…With the deepening of the research on LDPC codes, certain scholars have proposed to optimize the LDPC codes with the goal of reducing the bit error floor. Reference [34] points out the bit error floor phenomenon of complex message-passing iterative algorithm. Such a phenomenon is one of the most important obstacles in the use of LDPC codes in wireless communication systems and magnetic storage devices.…”

Section: Introductionmentioning

confidence: 99%

Improved EXIT Algorithm Based on Gaussian Mixture Model and its Application to LDPC Construction in Coding Cooperative Systems With Hybrid Fading

Chen

et al. 2020

IEEE Access

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In this study, an EXIT algorithm based on Gaussian mixture coding and multi-dimensional node information calculation is proposed. The objective is to solve the problem of performance analysis of cooperative communication and LDPC code construction under hybrid fading and impulse noise. First, Gaussian mixture model estimation of the decoding initialization information is performed by the expectation maximized algorithm. In addition, key parameters, such as weight, mean, and variance of the Gaussian mixture model are obtained. Then, the multi-dimensional information processing is performed on the variable node and the check node information in the traditional EXIT algorithm based on the multi-dimensional Gaussian mixture model and system symmetry analysis. Finally, the objective function of LDPC code optimization is constructed, the constraints are given, and the optimal LDPC code degree distribution is obtained by the differential evolution algorithm. The simulation results show that compared with the traditional regular and other irregular LDPC codes, the newly constructed degree distribution has better performance in waterfall characteristics and error floor characteristics. Such distribution provides a necessary method to analyze and optimize the performance of cooperative coding system under hybrid media or hybrid fading. INDEX TERMS Expectation maximization (EM), Gaussian mixture, hybrid fading, low-density paritycheck (LDPC) codes, multi-dimensional EXIT.

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Section: Introductionmentioning

confidence: 99%

Improved EXIT Algorithm Based on Gaussian Mixture Model and its Application to LDPC Construction in Coding Cooperative Systems With Hybrid Fading

Chen

et al. 2020

IEEE Access

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Research on a TCM-based Transmission Approach for EM-MWD by Combining Phase Modulation and Convolutional Coding

Zhang

Dong

et al. 2019

2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)

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A systematic approach for achieving low bit error rate of LDPC decoder using MWD algorithm

Cited by 2 publications

References 6 publications

Improved EXIT Algorithm Based on Gaussian Mixture Model and its Application to LDPC Construction in Coding Cooperative Systems With Hybrid Fading

Improved EXIT Algorithm Based on Gaussian Mixture Model and its Application to LDPC Construction in Coding Cooperative Systems With Hybrid Fading

Research on a TCM-based Transmission Approach for EM-MWD by Combining Phase Modulation and Convolutional Coding

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