Absolute-phasing synchronization capturing circuit

H - Electricity – 04 – L

Patent

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Details

H04L 27/22 (2006.01) H04L 7/00 (2006.01) H04L 27/227 (2006.01) H04L 27/233 (2006.01) H04L 27/00 (2006.01)

Patent

CA 2293629

A small-scale absolute-phasing synchronization capturing circuit for absolute phasing of a received signal by selectively transmitting a baseband signal demodulated through a demodulator (1), a baseband signal subjected to phase rotation through a remapper (11), a baseband signal output from a first inverting means, a baseband signal output from a second inverting means based on the phase angle of the received signal relative to the phase rotation of the transmission signal. The most significant bit in the demodulated baseband signal and the most significant bit in the baseband signal subjected to phase rotation through the remapper (11) are extracted and a frame synchronization signal is captured according to the extracted significant bit.

Cette invention se rapporte à un circuit d'acquisition de synchronisation pour mise en phase absolue à une petite échelle, aux fins de mise en phase absolue d'un signal reçu par émission sélective d'un signal en bande de base, démodulé par un démodulateur (1), d'un signal en bande de base soumis à une rotation de phase par un remappeur (11), d'un signal en bande de base délivré par un premier inverseur, et d'un signal en bande de base délivré par un second inverseur en fonction de l'angle de phase du signal reçu par rapport à la phase du signal d'émission. Le bit de poids fort du signal en bande de base démodulé et le bit de poids fort du signal en bande de base soumis à la rotation de phase par le remappeur (11) sont extraits et un signal de synchronisation de trame est acquis en fonction du bit de poids fort extrait.

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