Method and an apparatus for clipping signals in a CDMA system
US6765899B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2000 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Jan 24, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/70706
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a method and an apparatus for clipping CDMA carriers clipping for each CDMA carrier is performed on separate circuit boards and the clipping circuit has access to information regarding all carriers to be amplified by the same amplifier. Thus, since each carrier is clipped separately from all other carriers fed to the same amplifier, but having knowledge of the other carriers, a malfunction of the circuit board comprising the clipping circuit and/or clipping evaluation logic, will only affect that particular carrier and the other carriers can still be transmitted. Also, since clipping is carried out for each carrier separately, but taking into account information regarding the other carriers to be amplified by the same power amplifier, the clipping can take phase information into account when determining the clipping factor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.