Multi-frequency transmitter using predistortion and a method of transmitting
US6999523B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 22, 2001 |
| Grant date | Feb 14, 2006 |
| Priority date | — |
| Expiry date | Aug 3, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multi frequency carrier transmitter comprises input means for receiving a plurality of different digital signals to be transmitted. The different signals are to be transmitted on different carrier frequencies. Amplifier means receive a composite signal comprising the different signals at the respective carrier frequencies and amplify the composite signal. Predistortion means predistort the plurality of digital signals prior to amplification of the composite signal by the amplification means. The predistortion provided by the predistortion means is subsequently altered in dependence on the difference between the input signals and the output at the amplifier means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.