Available online at www.sciencedirect.com ScienceDirect Materials Today: Proceedings 5 (2018) 870–877 www.materialstoday.com/proceedings 2214-7853 © 2017 Elsevier Ltd. All rights reserved. Selection and Peer-review under responsibility of International Conference on Processing of Materials, Minerals and Energy (July 29th – 30th) 2016, Ongole, Andhra Pradesh, India. PMME 2016 Implementation of Non Linear Companding Technique for Reducing PAPR of OFDM  D.Madhavi a , M.Ramesh Patnaik b a Associate Professor,Dept.of ECE,GIT,GITAM University,Visakhapatnam,530045,India b Dept.of Instrument technology,AU College of Engineering,Andhra university,Visakhapatnam,530003, India Abstract High Peak-to-Average Power Ratio (PAPR) of transmitted signal is one of the foremost problems to implement Orthogonal Frequency Division Multiplexing (OFDM) System. To transform the OFDM signal into anticipated statistics form that are identified by a linear piecewise function, the new Non-Linear Companding transform (NCT) set of rules is used. The variable slopes and inflexion points are introduced inside the probability density function (PDF) while the PAPR and Bit Error Rate (BER) are compared to achieve efficiency in the overall performance and flexibility in the Non-Linear Companding (NCL) form. The expected transform gain and signal attenuation factor and all the theoretical value study of this set of rules are given. The main parameters are evaluated specifically based on the selection criteria of the transform parameters focusing on robustness and execution aspects. The exploration is exactly proved in Simulink. © 2017 Elsevier Ltd. All rights reserved. Selection and Peer-review under responsibility of International Conference on Processing of Materials, Minerals and Energy (July 29th – 30th) 2016, Ongole, Andhra Pradesh, India. Keywords:High power amplifier, Non-Linear Companding technique, Orthogonal frequency division multiplexing , Peak-to-average power ratio 1. Introduction As an emerging Technique, Orthogonal Frequency Division Multiplexing (OFDM) has been widely applied in the modern wireless communications. OFDM offers high spectral efficiency, immunity to frequency selective fading channels, low susceptibility to the multipath propagation and power efficiency. However, there are some obstacles  This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike License, which permits non-commercial use, distribution, and reproduction in any medium, provided the original author and source are credited.