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US 2026/0128752 A1Published application
Increasing Bandwidth for Digital Predistortion in Multi-Channel Wideband Communication Systems
OwnerWan-Jong Kim, Shawn Patrick Stapletoninventors
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Abstract
A method of operating a communications system includes receiving a signal at a digital predistorter (DPD), introducing predistortion to the signal using the DPD, and converting the predistorted signal to an analog signal using a digital-to-analog converter having a first bandwidth. The method also includes amplifying the analog signal, sampling the amplified signal using an analog-to-digital converter having a second bandwidth less than the first bandwidth, and extracting coefficients of the DPD from the sampled signal.
Claims7
A method comprising:
- receiving a signal at a digital predistorter (DPD) having a DPD bandwidth;
- introducing predistortion to the signal using the DPD;
- converting the predistorted signal to an analog signal using a digital-to-analog converter having a first bandwidth;
- modulating the analog signal using a modulator;
- amplifying the modulated signal;
- filtering the amplified signal using a bandwidth less than the first bandwidth;
- and
- transmitting the filtered signal using an antenna;
- and
- extracting coefficients of the DPD from the sampled signal.
7 more elements
Dependencies are inferred from the claim text.