Title :
A Comparison between Clipping and μ-Law Companding Schemes for the Reduction of Peak-to-Average Power Ratio of OFDM
Author :
Sulaiman, Sulaiman A. ; Badran, Ehab F. ; Mohamed, Darwish A E
Author_Institution :
Arab Acad. for Sci. & Technol. & Maritime Transp. (AAST), Alexandria
Abstract :
Signal clipping and μ-law companding have been suggested as simple and effective peak-to- average power ratio (PAPR) reduction schemes for orthogonal frequency-division multiplexing (OFDM). This paper, addresses the problem of PAPR and the relation between it and the number of subcarriers, and analyzes clipped and companded M-ary phase-shift keying (M-PSK) OFDM signals. Their performance in AWGN channel with the presence of nonlinear power amplifier is evaluated and compared using computer simulation.
Keywords :
AWGN channels; OFDM modulation; phase shift keying; power amplifiers; AWGN channel; M-PSK; M-ary phase-shift keying; OFDM; PAPR; companding schemes; nonlinear power amplifier; orthogonal frequency-division multiplexing; peak-to-average power ratio reduction; signal clipping; AWGN channels; Bandwidth; Frequency division multiplexing; High power amplifiers; Mathematical model; OFDM; Peak to average power ratio; Power amplifiers; Power system modeling; Signal analysis; μ-law companding; Orthogonal frequency-division multiplexing (OFDM); nonlinear power amplifier; peak-to-average power ratio (PAPR); signal clipping;
Conference_Titel :
Radio Science Conference, 2007. NRSC 2007. National
Conference_Location :
Cairo
Print_ISBN :
977-5031-86-9
DOI :
10.1109/NRSC.2007.371384
