THE METHOD OF IMPROVING THE RADIO FREQUENCY POWER AMPLIFIER EFFICIENCY BASED ON THE BASEBAND DIGITAL PRE-DISTORTION TECHNIQUE

摘要

The invention relates to a method of improving the radio frequency power amplifier efficiency based on the baseband digital pre-distortion technique, which comprises: firstly, define a pivotal neural network structure and scale, and then input the original values of the modeling data and the network parameters to establish the neural network. model of radio frequency power amplifier; secondly, correct the network parameters by means of the backward propagation method, if the error is permitted, then output the neural network model of radio frequency power amplifier; calculate the pre-distortion arithmetic of radio frequency power amplifier, and input the input signal to the radio frequency power amplifier after the pre-distortion processing by the pre-distortion arithmetic. The invention can establish the accurate neural network model of radio frequency power amplifier easy to calculate the pre­distortion arithmetic, improve the efficiency of radio frequency power amplifier effectively through the digital baseband pre-distortion, reduce the cost and restrain the bleeding of the out-band spectrum at the same time.