A compensating method based on SOM for nonlinear
distortion in 16 QAM-OFDM system <Abstract> This paper presents a compensating method based on Self-Organizing Map (SOM) of nonlinear dis tortion, which caused by high-power amplifier (HPA) for 16 QAM-OFDM system. OFDM signals are sensitive tu nonlinear distortions aiid different methods are studied to limit them. In the proposed scheme, the correction is done at the receiver by a SOM algorithm. Siniulations are carried out considering an additive white Gaussian (AWGN) transmission channel. Simulation results show that the SOM algorithm brings perceptible gains in a complete 1Fqam-OFDM system. |