Digital predistortion in varying operating conditions
US10763904B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2019 |
| Grant date | Sep 1, 2020 |
| Priority date | — |
| Expiry date | May 24, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/045
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Disclosed are digital predistortion implementations, including a method that includes collecting data for a wireless device with a transmit chain that includes at least one power amplifier that produces output with non-linear distortions, the data including data records that each includes input signal data and corresponding output signal data for the transmit chain, and with each record being associated with a set of operating conditions values, and with a variety measure representative of an extent of distinguishability of the record from other data records. The method further includes selecting at least some of the data records according to a variety criterion computed based on the variety measure for each record, computing, based on the selected records, digital predistortion parameters used to control a digital predistorter of the wireless device, and applying the digital predistorter, configured with the computed digital predistortion parameters, to subsequent input signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.