Invention Application
- Patent Title: DIGITAL PRE-DISTORTION COMPENSATION USING COMBINED DIRECT AND INDIRECT LEARNING
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Application No.: US17671077Application Date: 2022-02-14
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Publication No.: US20220255786A1Publication Date: 2022-08-11
- Inventor: Martin S. McCormick , Feipeng Wang
- Applicant: Space Exploration Technologies Corp.
- Applicant Address: US CA Hawthorne
- Assignee: Space Exploration Technologies Corp.
- Current Assignee: Space Exploration Technologies Corp.
- Current Assignee Address: US CA Hawthorne
- Main IPC: H04L27/36
- IPC: H04L27/36 ; H03F1/32 ; H04B1/04

Abstract:
A wireless communications system includes a pre-distortion actuator configured to receive a carrier-modulated signal and convert the carrier-modulated signal into an output signal. The system includes one or more antennas configured to receive the output signal and transmit the output signal, one or more power amplifiers electrically coupled between the pre-distortion actuator and the one or more antennas and a receiver configured to receive the output signal over-the-air and generate feedback based on the output signal. The pre-distortion actuator is configured to generate the output signal by applying a correction to the carrier-modulated signal that cancels out nonlinearities associated with the one or more antennas and/or the one or more power amplifiers. The pre-distortion actuator is configured based on the feedback.
Public/Granted literature
- US11665043B2 Digital pre-distortion compensation using combined direct and indirect learning Public/Granted day:2023-05-30
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