Methods and apparatus for reducing peak-to-RMS amplitude ratio in communication signals
US7639098B2 · kind B2 · utility
1Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2008 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Aug 29, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/339
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A pulse amplitude modulation (PAM) signal generator that injects a copy of a pulse into the PAM baseband signal prior to frequency upconversion and power amplification. The pulse comprises a function of, or an extra copy of, a pulse in the PAM baseband signal. The pulse injector analyzes the PAM baseband signal for times when a predetermined threshold is exceeded and forms a pulse that is constructed and arranged to reduce the amplitude of the PAM baseband signal to a desired peak amplitude when the pulse is added to the PAM baseband signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.