Adaptive predistortion system and a method of adaptively predistorting a signal
US6853246B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2002 |
| Grant date | Feb 8, 2005 |
| Priority date | — |
| Expiry date | Apr 18, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/3247
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An adaptive predistortion system for use with a power amplifier having a nonlinear amplification characteristic and a method of adaptively predistorting a signal is provided. In one embodiment, the adaptive predistortion system includes a coefficient update subsystem coupled to an output of the power amplifier and configured to update a set of predistortion coefficients using an iterative process based on an output signal of the power amplifier. Additionally, the adaptive predistortion system includes a predistortion filter subsystem coupled to the coefficient update subsystem and configured to employ the set of predistortion coefficients to reduce a level of distortion associated with the nonlinear amplification characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.