The invention relates to the technical field of
signal processing, and discloses a simultaneous same-frequency full-duplex self-
interference elimination method and
system, and the method comprises the steps: carrying out the data preprocessing of a generated self-interference
signal, generating a self-interference
signal containing a nonlinear factor, and constructing a training
data set according to the self-interference signal; establishing a plurality of CNN-LSTM attention models for extracting nonlinear features and
time sequence features of the self-interference signals; an auxiliary sub-module is introduced in the training stage of the model, so that the model has internal knowledge migration, and knowledge
distillation of a feature level is realized; training the model, and performing parameter optimization by adopting a
loss function which considers the amplitude and the phase of the complex signal at the same time; based on the trained model, linear and nonlinear two-stage self-
interference elimination is carried out on the received signal, self-interference suppression in a full
duplex system is realized, and the problems that the existing full duplex nonlinear self-
interference elimination method based on
deep learning is insufficient in
feature extraction capability, limited in supervision information and low in training speed are effectively solved through the method.