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PAPR Reduction and Data Security Improvement for OFDM Technique Using Chaos System

Abstract:
Orthogonal Frequency Division Multiplexing (OFDM) is the most popular multicarrier technique because it produces several advantages such as higher spectral efficiency, high transmission rate, robustness to fading channel and etc.. In this technique, the data is carrying by multiple orthogonal subcarriers. If all subcarriers\xa0 are adding together with the same phase, it will result high Peak to Average Power Ratio (PAPR). Higher value of PAPR makes low power efficiency, several degradation of performance in the transmit power amplifier and increase the complexity of converters. It is important to decrease PAPR for avoid these problems. Another requirement of the modern communication system is the\xa0 security of transmission data. All these issues make strong motivation for building algorithm to improve performance and security of OFDM system. In this paper, a proposed algorithm is presented to both reduce PAPR and secure the OFDM signal by generating several Aperiodic PseudoRandom Binary Sequences (APRBS s ) using chaos system. The proposed algorithm is scrambling the information by APRBS s , and one sequence is chosen for transmission which has smallest PAPR value. To inform receiver which sequence had been sent, a Side Information (SI) is enclosed with the transmitted sequence. Because SI very important at receiver, convolutional code with Viterbi-Soft Decision Decoding (V-SDD) is used to protect it against channel distortion. Simulation results state the proposed algorithm produces excellent PAPR reduction performance and approximately gives the same Bit Error Rate (BER) of the conventional OFDM system over AWGN and fading channels. In addition to get better performance, the proposed algorithm is providing a good data security due to chaos system. MATLAB program is used to build the proposed OFDM system and get the simulation results.
Author Listing: Muntadher Kadhim Abdullah;Ali Jawad Ibada
Volume: 15
Pages: 293-300
DOI: 10.24138/jcomss.v15i4.764
Language: English
Journal: Journal of communications software and systems

Journal of Communications Software and Systems

影响因子:0.6
是否综述期刊:否
是否OA:是
是否预警:不在预警名单内
发行时间:-
ISSN:1845-6421
发刊频率:-
收录数据库:ESCI/Scopus收录/DOAJ开放期刊
出版国家/地区:Croatia
出版社:University of Split

期刊介绍

年发文量 28
国人发稿量 -
国人发文占比 0%
自引率 0.0%
平均录取率 -
平均审稿周期 8 Weeks
版面费 -
偏重研究方向 Engineering-Electrical and Electronic Engineering
期刊官网 https://jcoms.fesb.unist.hr/
投稿链接 -

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100.00% 100.00% - -

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预警情况

时间 预警情况
2024年02月发布的2024版 不在预警名单中
2023年01月发布的2023版 不在预警名单中
2021年12月发布的2021版 不在预警名单中
2020年12月发布的2020版 不在预警名单中

JCR分区 WOS分区等级:Q4区

版本 按学科 分区
WOS期刊SCI分区
(2021-2022年最新版)
TELECOMMUNICATIONS Q4
COMPUTER SCIENCE, INFORMATION SYSTEMS Q4

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