An efficient PAPR reduction scheme for OFDM system using peak windowing and clipping

OFDM (Orthogonal frequency division multiplexing) has become the most attractive modulation technique for the majority of new generation of wireless communication systems which require high speed data transmission. High PAPR (Peak to average power ratio) is a major problem of this modulation technique. High PAPR reduces the power efficiency of the transmitter RF power amplifier. This paper presents an overview on the popular PAPR reduction techniques in OFDM system; by firstly investigating the peak windowing method, the clipping method by highlighting the major parameters with high effect on PAPR and BER performance, and finally a combination of these two techniques with an emphasis on the PAPR reduction. The results of simulation using MATLAB shows a PAPR reduction of 4dB at the probability of 10-3 and improvement of signal to noise ratio SNR of about 2dB at the probability of 10-3.