H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 5/06 (2006.01) H04B 10/18 (2006.01) H04J 1/08 (2006.01) H04J 1/14 (2006.01) H04J 14/02 (2006.01)
Patent
CA 2360873
A frenquency division multiplexing (FDM) node used in optical communications networks provides add-drop multiplexing (ADM) functionality between optical high-speed channels and electrical low-speed channels. The FDM node includes a high-speed system and an ADM crosspoint. The high-speed system converts between an optical high-speed channel and its constituent electrical low-speed channels through the use of frequency division multiplexing and preferably also QAM modulation. The ADM crosspoint couples incoming low-speed channels to outgoing low-speed channels, thus implementing the ADM functionality for the FDM node.
L'invention concerne un noeud de multiplexage en fréquence (FDM) utilisé dans les réseaux de communication optique, qui possède une fonctionnalité de multiplexage par insertion/extraction (ADM) entre des canaux grande vitesse optiques et des canaux basse vitesse électriques. Le noeud FDM comprend un système grande vitesse et un point de commutation ADM. Le système grande vitesse effectue la conversion entre un canal grande vitesse optique et les canaux basse vitesse électriques qui le constituent par multiplexage en fréquence ainsi que, de préférence, par modulation QAM. Le point de commutation ADM couple les canaux basse vitesse entrants avec les canaux grande vitesse sortants, de façon à mettre en oeuvre la fonctionnalité ADM pour le noeud FDM.
Chang Peter H.
Coward James F.
Elmer Augustus
Ho Minnie
Kou Abraham
Kestrel Solutions Inc.
Sim & Mcburney
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