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Article Details

Copyright Statement: This is an open access article licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, even commercially as long as the original work is properly cited.

Hybrid Concatenated LDPC Codes with LTE Modulation Schemes

Author 1: Mohanad Alfiras
Author 2: Wael A. H. Hadi
Author 3: Amjad Ali Jassim

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Digital Object Identifier (DOI) : 10.14569/IJACSA.2019.0100564

Article Published in International Journal of Advanced Computer Science and Applications(IJACSA), Volume 10 Issue 5, 2019.

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Abstract: In a communication system, the LDPC code is considered as a good performance error correcting code which reaches near Shannon limit. In this paper a hybrid LDPC code is proposed, the hybrid term here refers to the serial concatenation of parallel LDPC codes group and a single serial LDPC code. The outer two parallel LDPC codes encoder represents outer encoder where the single LDPC encoder represents the inner encoder. This study also emphases on the performance of a hybrid coding system in consideration with three modulation schemes. The modulation schemes include quadrature phase shift keying (QPSK) and two types of quadrature amplitude modulation; 16-QAM and 64-QAM. These modulation schemes are selected due to their importance in modern communication applications, such as long term evolution (LTE); such schemes are the standard modulation schemes used with LTE system. This study investigates different LDPC code rates such as 1/2 and 1/3 and simulates the AWGN communication channel using MATLAB. The simulation results show improvement in bit error rate (BER) when using 1/3 LDPC code rate in the designed system rather than 1/2, but it also increases the system complexity. In the end, all simulation results, the comparison between different cases of LDPC code rates and system performance are summarized.

Keywords: Coding; modulation; Hybrid; concatenation; low density parity check

Mohanad Alfiras, Wael A. H. Hadi and Amjad Ali Jassim, “Hybrid Concatenated LDPC Codes with LTE Modulation Schemes” International Journal of Advanced Computer Science and Applications(IJACSA), 10(5), 2019. http://dx.doi.org/10.14569/IJACSA.2019.0100564

@article{Alfiras2019,
title = {Hybrid Concatenated LDPC Codes with LTE Modulation Schemes},
journal = {International Journal of Advanced Computer Science and Applications},
doi = {10.14569/IJACSA.2019.0100564},
url = {http://dx.doi.org/10.14569/IJACSA.2019.0100564},
year = {2019},
publisher = {The Science and Information Organization},
volume = {10},
number = {5},
author = {Mohanad Alfiras and Wael A. H. Hadi and Amjad Ali Jassim}
}


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