Artificial neural network learning device, distortion compensation circuit and signal processing device

摘要

The artificial neural network learning device (31) has a signal supply unit (40) that supplies a plurality of training signals to the signal processing circuit (11), and a signal memory (a signal memory) that stores the response signal output from the signal processing circuit (11). A plurality of randomly or pseudo-randomly selected selection signals are read from the 55) and the signal memory (55), and the plurality of selection signals are supplied to the artificial neural network structure (41) to supply the artificial neural network structure (41). ), A memory control unit (51) for outputting a plurality of post-distortion signals, and a learning control unit (61) are provided. The learning control unit (61) uses a plurality of error signals indicating the difference between the plurality of post-distortion signals and the plurality of teacher signals corresponding to the plurality of selection signals, and performs adaptive processing based on the back propagation learning algorithm. Is executed to update the parameter group of the artificial neural network structure (41).