Multi-carrier transmission device
US8107900B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2005 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Feb 9, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2624
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A multi-carrier transmission device improves peak suppression efficiency in a multi-carrier signal. The multi-carrier transmission device (100) has a peak suppression unit (140) for dividing a multi-carrier signal into two parts: a first multi-carrier signal and a second multi-carrier signal. A peak signal detection unit (142) detects a power value at a predetermined interval concerning the first multi-carrier signal. When the detected power value is equal to or above a predetermined level, a peak extraction unit (144) extracts a signal component equal to or above the predetermined level from the first multi-carrier signal. A band limit filter unit (146) passes only a predetermined band from the extracted signal component. An adder (154) subtracts the signal component after the band limit from the second multi-carrier signal. A multiplier (150) is arranged at a latter stage of the band limit filter unit (146) and multiplies a weight for compensating the power loss in the band limit filter unit (146) and the first multi-carrier signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.