Abstract
This work presents a compensating method based on a self-organizing map (SOM) of nonlinear distortion, which is caused by the high-power amplifier (HPA) in 16 QAM-OFDM systems. OFDM signals are sensitive to nonlinear distortions and different methods are studied to limit them. In the proposed scheme, the correction is done at the receiver by a SOM algorithm. Simulations are carried out considering an additive white Gaussian noise (AWGN) transmission channel. Simulation results show that the SOM algorithm brings perceptible gains in a complete 16 QAM-OFDM system.
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