Analysis of Channel Models for Memory Less Nonlinear System

Abstract

OFDM technology has become the foundation technology of Digital communication system. The high power amplifier can effectively improve the peak-average power ratio of OFDM system, but with deprived linear performance. In this paper focus to improve linear performance of Memory less non linear system, analyzes the two different channel models i.e. Saleh Model and Rapp Model for their characteristics and presents a construction method by the corresponding nonlinear performance curve, and then presents a design of pre-distorter which can improve system linear performance. The nonlinear performance curve is used to do the simulation. The paper presents result for both models.