Far-end cross-talk cancellation for data transmission on...

H - Electricity – 04 – B

Patent

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H04B 3/32 (2006.01) E21B 47/12 (2006.01)

Patent

CA 2407453

A digital telemetry system having improved data rate and robustness. The telemetry system has a data transmission cable and is capable of transmitting data between a first and second end on at least two propagation modes. A data source connected at the first end has data transmission circuitry to generate signals on these propagation modes. A receiver connected to the second end of the wireline cable has a first receive circuitry to receive signals on a first of the propagation modes and a second receive circuitry to receive signals on a second of the propagation modes. An adaptive far-end cross-talk cancellation circuitry connected to the first receive circuitry and to the second receive circuitry cancels out far-end cross-talk between the propagation modes.

L'invention concerne un système de télémétrie numérique à débit binaire et à robustesse améliorés. Ce système de télémétrie comprend un câble de transmission de données capable de transmettre des données entre une première et une seconde extrémités sur au moins deux modes de propagation. Une source de données connectée à la première extrémité comprend des circuits de transmission de données permettant de générer des signaux sur ces modes de propagation. Un récepteur connecté à la seconde extrémité du câble comprend un premier circuit de réception destiné à recevoir des signaux sur le premier mode de propagation et un second circuit de réception destiné à recevoir des signaux sur le second mode de propagation. Des circuits d'annulation de télédiaphonie connectés au premier circuit de réception et au second circuit de réception annulent la télédiaphonie entre les modes de propagation.

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