Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Vol. 9, No. 4, December 2021, pp. 867~879 ISSN: 2089-3272, DOI: 10.52549/ijeei.v9i4.3188  867 Journal homepage: http://section.iaesonline.com/index.php/IJEEI/index Design and Evaluation of the Efficiency of Channel Coding LDPC Codes for 5G Information Technology Juliy Boiko 1 , Ilya Pyatin 2 , Oleksander Eromenko 3 1,2 Department of Telecommunications and Radio Engineering, Khmelnytsky National University, Ukraine 3 Department of Physics and Electrical Engineering, Khmelnytsky National University, Ukraine Article Info ABSTRACT Article history: Received Jun 20, 2021 Revised Oct 20, 2021 Accepted Nov 1, 2021 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. Keywords: Modulation LDPC-encoding Decoder Parity-check Network noise immunity Signal-to-noise ratio Copyright © 2021 Institute of Advanced Engineering and Science. All rights reserved. Corresponding Author: Juliy Boiko, Department of Telecommunications and Radio Engineering, Khmelnytsky National University, 11, Instytuts’ka str., Khmelnitsky, 29016, Ukraine. Email: boiko_julius@ukr.net 1. INTRODUCTION In information networks and mobile communication networks, the data transmission is used between user-assigned equipment and base stations. Accepted data differs from transmitted one through errors caused by noise, obstacles and fading. To fix these cellular networks errors use forward error correction codes. Thus, an important process that accompanies the operation of modern information networks is noise immunity coding [1-6]. High requirements for the quality of digital information transmitted in the telecommunication network is provided by the correction of errors that accompany the transmission process. The task is to find and study the optimal in terms of time and computing resources of encoding and decoding devices that play an important role in the design of advanced signal resources. The task of detecting and correcting errors in telecommunication networks is determined by such factors as external noise as well as the presence of interference due to the influence of neighboring base stations transmitters. Currently, the development of efficient signal code constructions (SCC) for advanced 5G networks lies in the search for the optimal compromise between low power consumption, cost, decoding complexity and