The paper presents an efficient digital adaptive method compensating for nonlinear distortions caused by a high-power amplifier (HPA) in orthogonal frequency division multiplexing(OFDM) system.
With the WDM (wavelength Division Multiplexing) technology based on EDFA (Erbium Doped fiber Amplifier) developing, it is possible to use multiple wavelengths to transmit over the same optical fiber.