Patent ID: 11736335

Abstract:
Various embodiments of the present disclosure relate to transmitter systems, methods, and instructions for signal predistortion. The transmitter system includes a signal decomposition module configured to extract a low-frequency signal (Slo) and a high-frequency signal (Shi) from an input signal (Sin); a distortion compensation processing module configured to generate a pre-distorted low-frequency signal (Ulo) and a pre-distorted high-frequency signal (Uhi) based on the received low-frequency and high-frequency signals using signal generation coefficients; a signal combining module configured to combine the pre-distorted low-frequency signal (Ulo) and the pre-distorted high-frequency signal (Uhi); and a signal characteristic estimation processing module configured to update the signal generation coefficients used by the distortion compensation processing module based on comparing the low-frequency signal (Slo) and the high-frequency signal (Shi) with a detected feedback low-frequency signal (Ylo) and a detected feedback high-frequency signal (Yhi).