Method and system of adaptive predistortion of a wireless transmitter
US8238849B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 18, 2007 |
| Grant date | Aug 7, 2012 |
| Priority date | — |
| Expiry date | Aug 3, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/3247
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method of adaptive predistortion of a power amplifier, characterized in that the method comprises the steps of: storing values of a plurality of corresponding first and second coefficients; selecting one of the stored first coefficients; processing a first signal with the first coefficient to produce an input signal for the power amplifier; amplifying the input signal in the power amplifier to produce an output signal; calculating an error value from the output signal and a previously selected first coefficient; selecting a stored second coefficient corresponding with the previously selected first coefficient; updating the previously selected first coefficient with a value calculated from the error value and the second coefficient; updating the second coefficient; and replacing the previously selected first coefficient and corresponding second coefficient with the updated first and second coefficients respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.