FIELD: means of communication.
SUBSTANCE: invention refers to signal processing systems of means of communication. The device for pre-emphasising the signal of the main frequency band consists of an adaptive parametre calculation module and a pre-emphasising module. Adaptive parametre calculation module is made with the possibility of calculating parametres of a nonlinear filter in compliance with the selected digital signal of the main frequency band and the feedback signal of radio frequency channel, as well as calculation results which are supplied to the pre-emphasising module. The latter is made with the possibility of maintaining and updating nonlinear filter parametres, performing statistical processing of power of digital signals of the main frequency band, choosing the appropriate nonlinear filter parametres, pre-emphasising digital signals of the main frequency band and producing the pre-emphasised signal.
EFFECT: improving power amplifier nonlinearity, providing the possibility of choosing various reverse nonlinearity models in compliance with various input signals and characteristics of the power amplifier, and increasing total capacity of the base station transmitter.
27 cl,12 dwg
