OFDM signal organized so as to simplify reception
US6810006B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 31, 2001 |
| Grant date | Oct 26, 2004 |
| Priority date | — |
| Expiry date | Nov 26, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/26025
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention relates to a signal intended to be transmitted towards a plurality of receivers, of the type comprising at least two source signals and consisting of a plurality of independently modulated substantially orthogonal carrier frequencies distributed over a predetermined frequency band. According to the invention, the frequency band is divided into at least two frequency sub-bands each comprising a set of the substantially orthogonal carrier frequencies, and to each of the sub-bands is allocated one of the source signals, so that a receiver may retrieve from the transmitted signal, by filtration, at least one of the sub-bands and perform demodulation processing only on the carrier frequencies contained in the retrieved sub-bands. The invention also relates to a transmission process as well as to a receiver of such signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.