Apparatus and method for crest factor reduction architecture
US8340210B2 · kind B2 · utility
6Cited by
9References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 21, 2010 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Mar 2, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2624
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A device and a method for crest factor reduction reduces peak-to-average ratio (PAR) to increase power amplifier efficiency. A first hard clipping block performs hard clipping on an input signal when the amplitude of the input signal is greater than a first threshold. A shaping filter reshapes the spectrum of the hard clipped signal. An interpolator increases the sampling rate of the reshaped signal. A second hard clipping block performs hard clipping on the interpolated signal when the amplitude of the interpolated signal is greater than a second threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.