Generalized discrete fourier transform based improvement of partial transmit sequence scheme to reduce PAPR in OFDM systems

Elshirkasi, Ahmed Mohamed and Siddiqi, Mohammad Umar and Habaebi, Mohamed Hadi (2015) Generalized discrete fourier transform based improvement of partial transmit sequence scheme to reduce PAPR in OFDM systems. Journal of Theoretical and Applied Information Technology, 76 (1). pp. 76-81. ISSN 1817-3195 (O), 1992-8645 (P)

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Abstract

Future applications of communication systems require higher data rates and more mobility. Orthogonal frequency division multiplexing (OFDM) can achieve these goals due to it is ability to reach high bit rates over fading channels as well as its efficient utilization of the bandwidth. However, the transmitted signal of OFDM suffers from high peak to average power ratio (PAPR). Such signals require high power amplifier (HPA) of large dynamic range to amplify the whole transmitted signal without distorting it. This paper gives the results of a study on the effect of applying the nonlinear phase of generalized discrete Fourier transform (GDFT) theory on the performance of partial transmit sequence (PTS) which is one of proposed techniques to mitigate high PAPR of OFDM signal. This has been done by modifying the phase of data symbols in each OFDM block before PTS is applied. Simulation results show that the proposed scheme requires half the number of sub-blocks to achieve the same amount of PAPR reduction compared with the original PTS scheme.

Item Type:	Article (Journal)
Additional Information:	5072/44525
Uncontrolled Keywords:	Generalized Discrete Fourier Transform, OFDM, PAPR, CCDF, PTS
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Electrical and Computer Engineering
Depositing User:	Dr. Mohamed Hadi Habaebi
Date Deposited:	03 Sep 2015 12:12
Last Modified:	03 Sep 2015 12:12
URI:	http://irep.iium.edu.my/id/eprint/44525

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