A comparative simulation study of different decoding schemes in LDPC coded OFDM systems for NB-PLC channel

Maammar, Nejwa El; Bri, Seddik; Foshi, Jaouad

doi:10.11591/ijeecs.v15.i1.pp306-313

Cited by 4 publications

(4 citation statements)

References 19 publications

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“…In the literature, Middleton's Class A noise model [25] was introduced into a statistical model of impulsive noise environment, which is composed of sum of Gaussian noise and impulsive noise. The PDF of the noise amplitude z is as follows [26], [27]:…”

Section: Noise Modelmentioning

confidence: 99%

High performance binary LDPC-coded OFDM systems over indoor PLC channels

et al. 2021

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Power line communication (PLC) technology is actually among the most renowned technologies for home environments due to their low-cost installation opportunities. In this study, the bit error rate (BER) performances of binary low-density parity check (LDPC) coded orthogonal frequencydivision multiplexing (OFDM) systems have been considered over indoor PLC channels. Performances comparison of diverse soft and hard decision LDPC decoder schemes such as Min-Sum (MS), weighted bit flipping (WBF), gradient descent bit-flip (GDBF), noisy gradient descent bit-flip (NGDBF) and its few variants including the single-bit NGDBF (S-NGDBF), multi-bit NGDBF (M-NGDBF) and smoothed-multi-bit NGDBF (SM-NGDBF) decoders were examined in the modeled network. To evaluate the BER performance analyses three different PLC channel scenarios were generated by using new and more realistic PLC channel model proposal were also employed. All of the simulations performed in Canete's PLC channel model showed that remarkable performance improvement can be achieved by using short-length LDPC codes. Especially, the improvements are striking when the MS or SM-NGDBF decoding algorithms are employed on the receiver side.

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Section: Noise Modelmentioning

confidence: 99%

High performance binary LDPC-coded OFDM systems over indoor PLC channels

et al. 2021

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“…The analysis of the structural scheme and model of the communication channel with LDPC codes as well as the analysis of the optimal power distribution in the coded communication systems are conducted [24]. The bandwidth and probability of network failures when using coding schemes based on low-density code constructions are estimated [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Design and Evaluation of the Efficiency of Channel Coding LDPC Codes for 5G Information Technology

Boiko

Pyatin

Eromenko

2021

IJEEI

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This paper proposes a result of an investigation of a topical problem and the development of models for efficient coding in information networks based on codes with a low density of parity check. The main advantage of the technique is the presented recommendations for choosing a signal-code construction is carried out taking into account the code rate and the number of iterations decoding for envisaging the defined noise immunity indices. The noise immunity of signal-code constructions based on low-density codes has been increased by combining them with multi position digital modulation. This solution eventually allowed to develop a strategy for decoder designing of such codes and to optimize the code structure for a specific information network. To test the effectiveness of the proposed method, MATLAB simulations are carried out under for various Information channels binary symmetric channel (BSC), a channel with additive white Gaussian noise (AWGN), binary asymmetric channel (BAC), asymmetric channel Z type. In addition, different code rates were used during the experiment. The study of signal-code constructions with differential modulation is presented. The efficiency of different decoding algorithms is investigated. The advantage of the obtained results over the known ones consists in determining the maximum noise immunity for the proposed codes. The energy gain was on the order of 6 dB, and an increase in the number of decoding iterations from 3 to 10 leads to a gain in coding energy of 5 dB. Envisaged that the results obtained can be very useful in the development of practical coding schemes in 5G networks.

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“…In this case, the fact of application possibility of the received results has an important value, their competitiveness in comparing to the uncoded methods of error protection. Practical achievements of code theory are well-known nowadays [5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…The review of literary sources allows to establish, that multi-threshold decoders of self-orthogonal codes is the effective enough method of decision of increase quality decoding and its rate tasks [1,[15][16][17]. The papers of the authors [1,2,7], represent detailed description of methods for multi-threshold decoding. However, the main issues considered in these publications mainly concern to decoding features of structured LDPC-codes, turbo-codes, BCH-codes and others [9].…”

Section: Introductionmentioning

confidence: 99%

Method of the adaptive decoding of self-orthogonal codes in telecommunication

Boiko

Pyatin

Eromenko

et al. 2020

IJEECS

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<p>The methodology description of the adaptive multi-threshold decoding of self-orthogonal codes in the telecommunication channels of information transfer is shown in this paper. The method of multi-threshold decoder modification is described on the basis of adaptive filtration algorithms. Principles of adaptive algorithms application provide for necessary data transmission validity in the case of the multi-threshold decoding are explored. The graphic charts of multi-threshold decoders noise immunity of self-orthogonal block and convolutional codes are presented. It is determined the coding gain (CG) for multi-threshold decoding schemes. The result of research conducted in the course of the paper is to develop a set of scientifically grounded theoretical positions and practical recommendations and proposals for the development of mechanisms of formalization of description of method of increasing of noise immunity of telecommunication systems transmitting information to the synthesis and improving receiver circuit modulated signals on the theory and practice the use of signal-code constructions (SCC) when deciding maximize system capacity information transmission in the presence of noise.</p>

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A comparative simulation study of different decoding schemes in LDPC coded OFDM systems for NB-PLC channel

Cited by 4 publications

References 19 publications

High performance binary LDPC-coded OFDM systems over indoor PLC channels

High performance binary LDPC-coded OFDM systems over indoor PLC channels

Design and Evaluation of the Efficiency of Channel Coding LDPC Codes for 5G Information Technology

Method of the adaptive decoding of self-orthogonal codes in telecommunication

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