Design and Implementation of a Predistortion Compensation Algorithm Based on OFDM
GUO Yubing
YANG Jiantao
Abstract：Orthogonal Frequency Division Multiplexing means OFDM .In the system using OFDM technology , the transmission signals are sensitive to the nonlinearity of high power amplifiers (HPA) .The nonlinearity of HPA causes inter symbol interference and adjacent channel interference .A scheme for digital predistortion based on parallel structure is pro‐posed ,which containes two parallel module ,polynomial and Hammerstein predistorter .The former is to compensate the high order nonlinearity of HPA ,while the later is for memorability and low order nonlinearity .Simulation results show that the compensation algorithm can correct the nonlinearity distortion obviously to linearization HPA .
Keywords：nonlinearhigh power amplifierspredistortionOFDM communication
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 2123-2126 )