PAPR FOR OFDM SYSTEM BASED ON FAST DISCRETE CURVELET TRANSFORM

Journal of Engineering Science and Technology

卷:13

MOHAMMED A. A. ELMALEEH¹  MOHAMED H. M. NERMA² 

[1] Sudan University of Science and Technology, College of Engineering, Khartoum, Sudan;

[2] University of Tabuk, Faculty of Computer and Information Technology, P.O. Box 71491, Tabuk, Kingdom of Saudi Arabia;

关键词: BER;    Curvelet transforms;    FFT;    OFDM;    PAPR;    Unequispaced FFT;    Wavelet transforms;    Wrapping;   

DOI  :  

来源: DOAJ

【 摘 要 】

Orthogonal Frequency-Division Multiplexing (OFDM) is an attractive transmission technique for high-bit-rate communication systems. However, high Peak to Average Power Ratio (PAPR) of transmitted signals is a major shortcoming for Multi-Carrier Modulation (MCM) system such as the OFDM system. Traditional OFDM implementations use common Fourier filters for data modulation and demodulation via the Inverse Fast Fourier Transform (IFFT) and the FFT operations respectively, in this paper the Fast Discrete Curvelet Transform (FDCT) is proposed for OFDM in order to reduce the PAPR. The software CurveLab, used in this work is available at http://www.curvelet.org. The proposed system used FDCT via both Unequispaced Fast Fourier Transform (USFFT) and Wrapping. In terms of PAPR, the results show that both transforms used in this work gives better PAPR results, FDCT via USFFT and FDCT via Wrapping are given approximately about 7.7 dB reduction compared to traditional OFDM. Moreover, the results show that the BER performance of the considered system nearly matches the theoretical BPSK BER performance in an Additive White Gaussian Noise (AWGN) channel.

【 授权许可】

Unknown