Method and system for crest factor reduction
US8351542B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2009 |
| Grant date | Jan 8, 2013 |
| Priority date | — |
| Expiry date | Sep 17, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/49
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus and system are provided for crest factor reduction (CFR). Preferably, a peak from the wideband signal is detected. A gain from the magnitude of the peak and a threshold can then be calculated. Based on this information, each carrier's contribution to the peak can be approximated, and a cancellation pulse coefficient for each carrier from its contribution to the peak can be calculated. A base cancellation pulse can be calculated from the cancellation pulse coefficients for each carrier, and a cancellation pulse can be calculated from the base cancellation pulse and the gain, which can then be applied to the wideband signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.