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公开(公告)号：US11757695B2
公开(公告)日：2023-09-12
申请号：US17542710
申请日：2021-12-06
发明人： Ruikang Yang , Michael Russo , Simon Hamparian
CPC分类号： H04L27/367 , H04L27/2695 , H04L27/3836
摘要： Various embodiments of the present disclosure relate to transmitter systems, methods, and instructions for signal predistortion. The transmitter system includes an intermodulation distortion (IMD) filter module configured to filter a detected feedback signal (Yin) to generate a targeted filtered signal (Yout), a digital pre-distortion (DPD) coefficient estimation module configured to update signal generation coefficients based on comparing an input signal (Sin) with the targeted filtered signal (Yout), and a distortion compensation processing module configured to generate a pre-distorted signal (Uout) based on the input signal (Sin) using the updated signal generation coefficients.
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公开(公告)号：US11736335B2
公开(公告)日：2023-08-22
申请号：US17542671
申请日：2021-12-06
发明人： Ruikang Yang , Michael Russo , Simon Hamparian
CPC分类号： H04L27/367 , H04L27/2695 , H04L27/3836
摘要： 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).
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