Title :
Genetic algorithm for PAPR reduction in SLM wavelet-OFDM systems
Author :
El-Mahallawy, Mohamed S. ; Hagras, Esam A. A. ; Fathy, Sameh A.
Author_Institution :
Dept. of Electron. & Commun. Eng., Arab Acad. for Sci., Technol. & Maritime Transport, Cairo, Egypt
Abstract :
Orthogonal frequency division multiplexing (OFDM) has lately used in wireless communication systems for its high transmission data rate and robustness against frequency selective fading. However, OFDM system suffers from a major drawback at the transmitter that is the high peak-to-average power ratio (PAPR) of the transmitted OFDM signal. Selected mapping (SLM) technique is used to achieve a good PAPR reduction without signal distortion. In this paper, an efficient PAPR reduction technique using SLM Wavelet-OFDM (WOFDM) based on Genetic Algorithm (GA) is proposed. Wavelet-OFDM (WOFDM) system has the same advantages of conventional OFDM with high PAPR reduction. GA is applied to SLM-WOFDM for searching the optimum phase rotation factors to give more reduction in PAPR. The simulation results show that the proposed system provides better PAPR reduction compared to the conventional SLM-OFDM and SLM-WOFDM systems.
Keywords :
OFDM modulation; genetic algorithms; wavelet transforms; PAPR reduction; SLM technique; SLM wavelet-OFDM; WOFDM system; frequency selective fading; genetic algorithm; optimum phase rotation factors; orthogonal frequency division multiplexing; peak-to-average power ratio; selected mapping technique; transmitted OFDM signal; wavelet-OFDM system; wireless communication systems; Genetic algorithms; Peak to average power ratio; Sociology; Wavelet transforms; Wireless communication; Selected mapping (SLM); discrete wavelet transform (D WT); genetic algorithm (GA); peak-to-average power ratio (PAPR);
Conference_Titel :
Computer, Control, Informatics and Its Applications (IC3INA), 2014 International Conference on
Conference_Location :
Bandung
Print_ISBN :
978-1-4799-4577-1
DOI :
10.1109/IC3INA.2014.7042615
