Spectral optimization and joint signaling techniques with upstream/downstream separation for communication in the presence of crosstalk

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dc.contributor.assigneeRice Universityen_US
dc.contributor.publisherUnited States Patent and Trademark Officeen_US
dc.creatorGaikwad, Rohit V.en_US
dc.creatorBaraniuk, Richard G.en_US
dc.date.accessioned2015-05-04T19:05:30Zen_US
dc.date.available2015-05-04T19:05:30Zen_US
dc.date.filed1998-09-01en_US
dc.date.issued2001-09-18en_US
dc.description.abstractA system and method for determining transmission characteristics for a communications channel and for transmitting data on the communications channel. In one embodiment, the method starts by determining the channel's transfer function and determining interference characteristics for the channel. The interference characteristics preferably include transfer functions describing the channel's susceptibility to cross talk from neighboring channels. The channel transfer function and the interference characteristics are then examined and a transmit spectrum (or power spectral density function) is constructed for the channel. The transmit spectrum preferably uses orthogonal separation of upstream and downstream communications to increase channel capacity. This method is useable in communicating data when the channel is subject to interference from one or more other communications channels, including near-end cross talk (NEXT) and far-end cross talk (FEXT), from other channels carrying the same service and/or different services. The present invention may be used in digital subscriber-line (xDSL) communications or in a variety of other applications, such as in well-logging and in systems involving multiple interfering radio transmitters.en_US
dc.digitization.specificationsThis patent information was downloaded from the US Patent and Trademark website (http://www.uspto.gov/) as image-PDFs. The PDFs were OCRed for access purposes.en_US
dc.format.extent81 ppen_US
dc.identifier.citationGaikwad, Rohit V. and Baraniuk, Richard G., "Spectral optimization and joint signaling techniques with upstream/downstream separation for communication in the presence of crosstalk." Patent US6292559B1. issued 2001-09-18. Retrieved from https://hdl.handle.net/1911/79838.en_US
dc.identifier.patentIDUS6292559B1en_US
dc.identifier.urihttps://hdl.handle.net/1911/79838en_US
dc.language.isoengen_US
dc.titleSpectral optimization and joint signaling techniques with upstream/downstream separation for communication in the presence of crosstalken_US
dc.typeUtility patenten_US
dc.type.dcmiTexten_US
dc.type.genrepatentsen_US
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