Optimal Transmit Spectra for Communication in the Presence of Crosstalk and Imperfect Echo Cancellation

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dc.citation.bibtexNameinproceedingsen_US
dc.citation.conferenceNameIEEE Globecomen_US
dc.citation.firstpage364
dc.citation.lastpage368
dc.citation.locationSan Antonio, TXen_US
dc.citation.volumeNumber1en_US
dc.contributor.authorAhmed, Nadeemen_US
dc.contributor.authorBaraniuk, Richard G.en_US
dc.contributor.authorShaver, Donalden_US
dc.contributor.orgDigital Signal Processing (http://dsp.rice.edu/)en_US
dc.date.accessioned2007-10-31T00:33:30Z
dc.date.available2007-10-31T00:33:30Z
dc.date.issued2001-11-01en
dc.date.modified2006-06-21en_US
dc.date.note2004-03-18en_US
dc.date.submitted2001-11-01en_US
dc.descriptionConference Paperen_US
dc.description.abstractIn many communication systems, including Digital Subscriber Lines, performance is severely limited by crosstalk interference. Previous work has presented a general framework for designing optimal transmit spectra for crosstalk avoidance . The technique uses the channel, noise, and interference characteristics to setup and solve an optimization problem which maximizes the capacity of neighboring lines, while maintaining spectral compatibility with other services. This joint signaling and optimal power distribution technique yields significant performance gains over conventional fixed spectra in terms of bit-rates and performance margins. In general, the spectra that result from this scheme have both an echo cancelled and frequency division multiplexed region. To ease the analysis, this technique assumed that the echo canceller has perfect echo rejection capability, which in practice is not true. In this paper, we propose an extension to these techniques, in which we factor the performance of practical echo cancellers into the optimization procedure. When echo rejection is not perfect, as is generally the case, our technique shows significant performance gains over previous techniques. As the performance of the echo canceller increases, our technique converges to the same solution.en_US
dc.identifier.citationN. Ahmed, R. G. Baraniuk and D. Shaver, "Optimal Transmit Spectra for Communication in the Presence of Crosstalk and Imperfect Echo Cancellation," vol. 1, 2001.
dc.identifier.doihttp://dx.doi.org/10.1109/ETS.2001.979412en_US
dc.identifier.urihttps://hdl.handle.net/1911/19658
dc.language.isoeng
dc.subjectDigital Subscriber Line*
dc.subjectDSL*
dc.subjectcapacity*
dc.subjectcrossttalk*
dc.subjectecho canceller*
dc.subjecttransmit spectra*
dc.subjectcapacity*
dc.subjectwater-filling*
dc.subject.keywordDigital Subscriber Lineen_US
dc.subject.keywordDSLen_US
dc.subject.keywordcapacityen_US
dc.subject.keywordcrossttalken_US
dc.subject.keywordecho cancelleren_US
dc.subject.keywordtransmit spectraen_US
dc.subject.keywordcapacityen_US
dc.subject.keywordwater-fillingen_US
dc.subject.otherDSP for Communicationsen_US
dc.titleOptimal Transmit Spectra for Communication in the Presence of Crosstalk and Imperfect Echo Cancellationen_US
dc.typeConference paper
dc.type.dcmiText
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