METHOD FOR REALIZING PRE-DISTORTION COMPENSATION PROCESSING FOR 5G NR IN-BAND MODULATION SIGNAL

摘要

The present invention relates to a method for realizing pre-distortion compensation processing for a 5G NR in-band modulation signal. The method comprises: configuring a modulator to output a continuous wave signal, switching a signal output frequency interval to be consistent with a 5G NR sub-carrier bandwidth, and recording, by means of a power meter, a power value P0 corresponding to the current frequency; calculating a power measurement difference value between all points and P0, and performing normalization, shaping and filtering to generate a compensation channel impulse response; converting same into a power compensation factor of a time domain; performing inverse Fourier transform to generate I and Q paths of baseband signals; generating baseband data after compensation; and performing filtering processing on the generated baseband data, generating an analogue zero intermediate frequency signal, and performing 5G NR broadband signal frequency conversion modulation. By means of the method for realizing pre-distortion compensation processing for a 5G NR in-band modulation signal in the present invention, a device circuit in a channel does not need to be corrected, so that not only are the in-band flatness and phase consistency index appearing in the bandwidth of 5G broadband modulation signals greatly improved, the research and development efficiency and the production efficiency are also improved.