Suppressed cycle based carrier modulation using amplitude...

Details Suppressed cycle based carrier modulation using amplitude... Suppressed cycle based carrier modulation using amplitude...

H - Electricity

04

L

H04L 27/00 (2006.01) H04L 27/02 (2006.01) H04L 27/04 (2006.01) H04L 27/06 (2006.01)

Patent

CA 2455737

A sinusoidal RF carrier is modulated for the transmission of digital binary data streams through the amplitude supression of carrier wavelets, which are defined between zero crossover positions representing zero energy locations. This modulation is accomplished when the carrier is slightly amplitude modulated with a modulation signal that is equal in frequency to the carrier itself and the modulation always begins or ends upon the exact zero voltage crossing point of the RF cycle phase. The modulation is applied as a slight shift of the amplitude of any single cycle, each cycle representing a single bit of data. A single cycle of RF will either represent a "1" or "0" depending upon the amplitude of the cycle, relative to other adjacent cycles in the same carrier.

Une porteuse RF sinusoïdale est modulée pour transmettre des flux de données binaires numériques par la suppression d'amplitude des ondelettes de la porteuse, définies entre les positions de coupure zéro qui représentent les emplacements à niveau d'énergie zéro. Cette modulation est effectuée lorsque la porteuse est légèrement modulée en amplitude avec un signal de modulation qui a une fréquence égale à la porteuse elle-même, et la modulation commence ou se termine toujours au niveau du croisement exact du point de tension zéro de la phase de cycle RF. La modulation est appliquée comme un léger décalage de l'amplitude de n'importe quel cycle unique, chaque cycle représentant un bit de données unique. Un cycle RF unique représente "1" ou "0" en fonction de l'amplitude du cycle, par rapport aux autres cycles adjacents dans la même porteuse.

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