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General Information
Editor-in-chief

Prof. Pascal Lorenz
University of Haute Alsace, France
 
It is my honor to be the editor-in-chief of IJFCC. The journal publishes good papers in the field of future computer and communication. Hopefully, IJFCC will become a recognized journal among the readers in the filed of future computer and communication.

IJFCC 2013 Vol.2(3): 188-191 ISSN: 2010-3751
DOI: 10.7763/IJFCC.2013.V2.149

Adaptive Hybrid PAPR Reduction in OFDM System

Osama A. Omer and Ahmed Abdel-Reheem
Abstract—High Peak to Average Power Ratio (PAPR) is still one of the most important challenges in Orthogonal Frequency Division Multiplexing (OFDM) system. In this paper, we propose a novel scheme based on Selected Mapping (SLM) technique for PAPR reduction in OFDM system. The proposed scheme is an adaptive hybrid scheme, which is based on the SLM technique and multiple transformation techniques. In the proposed scheme, instead of using only Discrete Fourier Transform (DFT) in OFDM system, we suggest to use Discrete Sine Transform (DST) and Discrete Cosine Transform (DCT) as well to get the lowest PAPR. In addition, the multiplied phase in the SLM is adapted to reduce the PAPR to an acceptable low PAPR level. Simulation results show that the proposed scheme technique can reduce the PAPR to about 4 dB in case of 256 sub-carriers and in case of 512 sub-carriers at clipping probability of 10-3.

Index Terms—OFDM, PAPR reduction, DCT, DST, adaptive scheme.

Osama A. Omer is with the Electrical Engineering Department, Aswan Faculty of Engineering, Aswan University, Aswan, Egypt (e-mail: omer.osama@gmail.com).
Ahmed Abdel Reheem is with Egypt Telecommunication, Aswan Egypt (e-mail: ahmed@ieeeorg).

[PDF]

Cite: Osama A. Omer and Ahmed Abdel-Reheem, "Adaptive Hybrid PAPR Reduction in OFDM System," International Journal of Future Computer and Communication vol. 2, no. 3 pp. 188-191, 2013.
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