Open Access

ARTICLE

Analysis of LDPC Code in Hybrid Communication Systems

by Hasnain Kashif^1,*, Muhammad Nasir Khan¹, Zubair Nawaz²

1 Department of Electrical Engineering, The University of Lahore, Lahore, 54000, Pakistan
2 Department of Data Science, University of Punjab, Lahore, 54000, Pakistan

* Corresponding Author: Hasnain Kashif. Email:

Computers, Materials & Continua 2023, 74(1), 769-781. https://doi.org/10.32604/cmc.2023.032565

Received 22 May 2022; Accepted 22 June 2022; Issue published 22 September 2022

Abstract

Free-space optical (FSO) communication is of supreme importance for designing next-generation networks. Over the past decades, the radio frequency (RF) spectrum has been the main topic of interest for wireless technology. The RF spectrum is becoming denser and more employed, making its availability tough for additional channels. Optical communication, exploited for messages or indications in historical times, is now becoming famous and useful in combination with error-correcting codes (ECC) to mitigate the effects of fading caused by atmospheric turbulence. A free-space communication system (FSCS) in which the hybrid technology is based on FSO and RF. FSCS is a capable solution to overcome the downsides of current schemes and enhance the overall link reliability and availability. The proposed FSCS with regular low-density parity-check (LDPC) for coding techniques is deliberated and evaluated in terms of signal-to-noise ratio (SNR) in this paper. The extrinsic information transfer (EXIT) methodology is an incredible technique employed to investigate the sum-product decoding algorithm of LDPC codes and optimize the EXIT chart by applying curve fitting. In this research work, we also analyze the behavior of the EXIT chart of regular/irregular LDPC for the FSCS. We also investigate the error performance of LDPC code for the proposed FSCS.

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