Transmitter device and signal processing method

A signal processing method, applied to a transmitter device, wherein the method comprises:

• sending m training signals, wherein m is an integer greater than or equal to 1;
• receiving a first mixed signal that is a superimposition of the m training signals in space, wherein a phase difference between the first mixed signal and a second mixed signal falls within a preset range, and the second mixed signal is a superimposition, in space, of the m training signals received by a receiver device;
• performing digital pre-distortion (DPD) parameter estimation based on the first mixed signal to obtain a DPD parameter, and performing pre-distortion processing on a to-be-sent signal based on the DPD parameter;
• and
• sending the to-be-sent signal on which the pre-distortion processing based on the DPD parameter has been performed.

A signal processing apparatus, comprising at least one non-transitory memory and at least one processor, wherein the at least one non-transitory memory is configured to store a computer program, and when running the computer program, the at least one processor is configured to:

• send m training signals, wherein m is an integer greater than or equal to 1;
• receive a first mixed signal that is a superimposition of the m training signals in space, wherein a phase difference between the first mixed signal and a second mixed signal falls within a preset range, and the second mixed signal is a superimposition, in space, of the m training signals received by a receiver device;
• perform digital pre-distortion (DPD) parameter estimation based on the first mixed signal to obtain a DPD parameter, and perform pre-distortion processing on a to-be-sent signal based on the DPD parameter;
• and
• send the to-be-sent signal on which the pre-distortion processing based on the DPD parameter has been performed.