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High performance LDPC codes for high spectral efficiency

Abstract : Achieving high spectral efficiency is the key requirement of future wireless systems and mobile communications because it provides us a high quality for high data over a limited bandwidth. In order to achieve high spectral efficiency, channel coding and modulation are the key part. Basically, high spectral efficiency can be achieved when adopting a high order modulation and low code rate. Thus, the transmission with high spectral efficiency needs a high performance error correcting code. In this paper, a high performance binary LDPC code is introduced, and the performance of this code is evaluated . It is obtained by a parallel concatenation of two identical regular binary LDPC codes, separated by an interleaver through the turbo-code structure proposed by Berrou and others. Simulation results show that the performance of the proposed code, with higher order constellations (16-QAM, 64-QAM and 256-QAM) using Gray mapping, under Gaussian and Rayleigh channels has higher performance than a single LDPC code with the same block length. Also, we show that its performance can be improved with the increasing of two numbers of iterations: global iterations and/or iterations of binary LDPC codes, and the interleaver in the proposed code has a positive effect on the performance
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https://hal-uphf.archives-ouvertes.fr/hal-03676514
Contributor : Mylène Delrue Connect in order to contact the contributor
Submitted on : Tuesday, May 24, 2022 - 9:38:59 AM
Last modification on : Wednesday, May 25, 2022 - 3:42:23 AM

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  • HAL Id : hal-03676514, version 1

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Latifa Mostari, Abdelmalik Taleb-Ahmed, Abdennacer Bounoua. High performance LDPC codes for high spectral efficiency. Internetworking Indonesia Journal, 2018, 10 (1), pp.9-15. ⟨hal-03676514⟩

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