OFDM signal organized so as to simplify reception
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United States of America Patent
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Oct 26, 2004
Grant Date -
May 23, 2002
app pub date -
Jul 31, 2001
filing date -
Jun 16, 1994
priority date (Note) -
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status (Latency Note)
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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.
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