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General Information
ISSN:
1796-2021 (Online); 2374-4367 (Print)
Abbreviated Title:
J. Commun.
Frequency:
Monthly
DOI:
10.12720/jcm
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2.5
2022
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Editor-in-Chief
Prof. Maode Ma
College of Engineering, Qatar University, Doha, Qatar
I'm very happy and honored to take on the position of editor-in-chief of JCM, which is a high-quality journal with potential and I'll try my every effort to bring JCM to a next level...
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2024-04-17
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2023
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Volume 18, No. 11, November 2023
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JCM 2023 Vol.18(11): 676-688
Doi: 10.12720/jcm.18.11.676-688
Performance Evaluation of Coded OFDM Using 4QPSK and 16QAM
Mohammed A. Aljubouri and Mahmoud Z. Iskandarani *
Faculty of Engineering, Al-Ahliyya Amman University, Amman, Jordan; Email: moha.jubury@gmail.com (M.A.A.) *Correspondence: m.iskandarani@ammanu.edu.jo (M.Z.I.)
Manuscript received April 12, 2023; revised June 16, 2023; accepted September 13, 2023.
Abstract
—The goal of modern communication systems is to transmit information from one point to another through a communication channel quickly and effectively. Mobile wireless users will move around while always being connected to the network. This necessitates the transmission of digital material through wireless networks and satellites, which has grown to be a significant problem over time. The main goal of this study is to compare the performance and efficiency of OFDM to that of other coding schemes, such as LDPC, Turbo, and Convolution. In this simulation, multiple forms of modulation, such as 4 QPSK with a coding rate of 0.663 and a BER of 0.001 at 0.59 dB Eb/No and an efficiency of 1.326, were compared with LDPC, Turbo, and Convolution codes. The performance is improved in the following simulated comparison of 16 QAM with a coding rate of 0.479, which has a BER of 0.001, an Eb/No of 3.26 dB, and an efficiency of 1.914. Using unique, not tried before LDPC code rate of 0.313, with efficiency of 1.25, 0.001 BER, and Eb/No, of 0.65 dB, the simulation proved that the performance of BER and Eb/No, using LDPC and 16 QAM results in a more efficient coding compared with Convolution code and Turbo code. This work has the unique contribution of using untried rates from the 3GPP sheet under three different coding techniques (LDPC, Turbo, and Convolution), which resulted in a lower BER per AWGN channel under OFDM, QPSK, and 16 QAM. The simulation implemented a regular OFDM system over AWGN channel noise, which was done in MATLAB.
Keywords
—OFDM, 5G NR, channel coding, Signal to noise ratio (SNR), BER, LDPC, Turbo, convolution, simulation, additive white gaussian noise
Cite: Mohammed A. Aljubouri and Mahmoud Z. Iskandarani, “Performance Evaluation of Coded OFDM Using 4QPSK and 16QAM," Journal of Communications vol. 18, no. 11, pp. 676-688, November 2023.
Copyright © 2023 by the authors. This is an open access article distributed under the Creative Commons Attribution License (
CC BY-NC-ND 4.0
), which permits use, distribution and reproduction in any medium, provided that the article is properly cited, the use is non-commercial and no modifications or adaptations are made.
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