Radio transmission apparatus having peak suppression function
US7804914B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2008 |
| Grant date | Sep 28, 2010 |
| Priority date | — |
| Expiry date | Jan 31, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0021
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A radio transmission apparatus executing peak suppression processing to an input signal in at least two stages, includes a first peak detector detecting a first peak, a maximum peak among peaks exceeding a first threshold, for a plurality of envelopes included in a predetermined input signal section; a second peak detector detecting a second peak exceeding a second threshold, on the basis of each input signal envelope; a first peak suppression unit suppressing the predetermined input signal section to the limit of a first level based on the first peak; a modulation signal generation unit generating a modulated signal modulated from the input signal suppressed by the first peak suppression unit; and a second peak suppression unit suppressing the second peak to the limit of a second level by each modulated signal envelope based on the first level and the second peak.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.