Patent
Telecommunication system using digital-subscriber lines coexisting with TCM-ISDN lines
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TLDR
In this article, an asymmetric digital subscriber line (ADSL) system that communicates via DLS routing through a bundle of cables including a communication line for time compression multiplexing-integrated services digital network (TCM-ISDN) system is synchronized with a TCM timing reference (TTR) signal.Abstract:
Provided is an asymmetric digital subscriber line (ADSL) system that communicates via digital subscriber line (DSL) routing through a bundle of cables including a communication line for time compression multiplexing-integrated services digital network (TCM-ISDN) system that is synchronized with a TCM timing reference (TTR) signal. The ADSL system is synchronized with a data signal inputted after the TTR indication signal.read more
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Patent
DMT system with variable subchannel spacing in TCM ISDN noise
TL;DR: In this paper, a first component is used to produce a plurality of discrete multitone symbols based in part on a subchannel spacing and a cyclic extension length, and a second component is chosen based on the sub-channel spacing to increase the number of discrete multi-one symbols transmitted during a low noise interval of a cyclostationary noise environment.
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Patent
Equalizer training for ADSL transceivers under TCM-ISDN crosstalk environment
TL;DR: In this paper, a technique for training an equalizer of an ADSL Annex C transceiver is provided, which defines the points in the transmission sequence at which equalizer training should take place, and what symbols comprising the transmission should be used for training.