Performance analysis of PAPR reduction in G-OFDM with QPSK modulation

OFDM has several applications in optical, mobile, Wireless and WiMaX systems owing to its energy efficiency. But high peak to average power ratio (PAPR) is one of the main problems in the modulation process of OFDM systems. The influence of number of subcarriers and different modulation techniques to the PAPR in OFDM based applications has been investigated earlier. QPSK or QAM are mainly considered as a digital modulation technique in most of the previous research. The main goal of this paper is to provide an efficient method of analysing and reducing the PAPR of a QPSK modulated signal in Goppa coded OFDM (G-OFDM) system. The results of analysis are presented in various figures and tables.