Transmitter with peak-tracking PAPR reduction and method therefor
US8934854B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 2012 |
| Grant date | Jan 13, 2015 |
| Priority date | — |
| Expiry date | Apr 18, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/102
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A transmitter (20) includes a peak reduction section (30), a predistorter (98), and an amplifying section (102) biased by a variable bias signal generator (118). The peak reduction section (30) is controlled by a signal magnitude threshold (36) that defines maximum magnitudes for local peaks (32) of a reduced-peak communication signal (38). The bias signal generator (118) is controlled by a bias control signal (110). Both the signal magnitude threshold (36) and the bias control signal (110) are derived from a common reduced bandwidth (50) peak-tracking signal (42). The peak-tracking signal (42) is derived from an inflated-peak communication signal (26). The predistorter (98) applies distortion to the reduced-peak communication signal (38) that is configured, at least in part, by the bias control signal (110).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.