International Journal of Academic Pedagogical Research (IJAPR)   Year: 2023 | Volume: 7 | Issue: 4 | Page No.: 60-64 A Technique for Peak-to-Average Power Ratio Minimization in Orthogonal Frequency Division Multiplexing Based Wireless Network Download PDF Donatus Onyedikachi Njoku, Ikwuazom, Callistus Tochukwu, Onukwugha Chinwe Gilean, Jibiri, Ebere Janefrances Abstract: Peak-to-Average Power Ratio (PAPR) reduction in Orthogonal Frequency Division Multiplexing (OFDM) based wireless network has been presented. An OFDM system that uses Discrete Fourier Transform (DFT) precoding algorithm to code the OFDM signal and after which Clipping and Filtering process was performed repeatedly for four times in order to effectively reduced the PAPR effect on the signal. Simulations were performed in MATLAB environment using Quadrature Phase Shift Keying (QPSK) modulation. The results from the simulations carried out using optimum parameters revealed that the PAPR of OFDM signal was reduced to 2.80 dB, which is 73.4% improvement from the original or conventional OFDM signal.