Apparatus and method for providing a baseband digital error signal in an adaptive predistorter
US5486789A · kind A · utility
64Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1995 |
| Grant date | Jan 23, 1996 |
| Priority date | — |
| Expiry date | Feb 28, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2201/3233
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention provides an apparatus (200) and method (500) for providing a baseband digital error signal in an adaptive predistorter. A carrier cancellation circuit (202) provides a difference (212) between a first signal (208) based on an amplifier output and second signal (210) based on a data input. A quadrature demodulator (204) provides a baseband analog error signal (214) based on the difference (212). An analog-to-digital converter (206) provides the baseband digital error signal (216) based on the baseband analog error signal (214).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.