Patents Assigned to Fundacion Tarpuy
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Patent number: 8873974Abstract: An embodiment of the invention is a technique to equalize received samples. A coefficient generator generates filter coefficients using an error vector and input samples. A filter stage generates equalized samples from input samples using the filter coefficients. The received samples are provided by a receiver front end in an optical transmission channel carrying transmitted symbols. Other embodiments are also described.Type: GrantFiled: May 7, 2013Date of Patent: October 28, 2014Assignee: Fundación TarpuyInventors: Mario Rafael Hueda, Diego Ernesto Crivelli, Hugo Santiago Carrer
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Patent number: 8565297Abstract: An embodiment of the invention is a technique to equalize received samples. An equalizer equalizes a multidimensional signal transmitted over a communication channel and having a dimensionality of four or higher. The equalizer is adaptively trained based on an optimality criterion.Type: GrantFiled: January 9, 2012Date of Patent: October 22, 2013Assignee: Fundación TarpuyInventors: Hugo Santiago Carrer, Diego Ernesto Crivelli, Mario Rafael Hueda
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Publication number: 20130251379Abstract: An embodiment of the invention is a technique to equalize received samples. A coefficient generator generates filter coefficients using an error vector and input samples. A filter stage generates equalized samples from input samples using the filter coefficients. The received samples are provided by a receiver front end in an optical transmission channel carrying transmitted symbols. Other embodiments are also described.Type: ApplicationFiled: May 7, 2013Publication date: September 26, 2013Applicant: Fundación TarpuyInventors: Mario Rafael Hueda, Diego Ernesto Crivelli, Hugo Santiago Carrer
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Patent number: 8457504Abstract: An embodiment of the invention is a technique to equalize received samples. A coefficient generator generates filter coefficients using an error vector and input samples. A filter stage generates equalized samples from input samples using the filter coefficients. The received samples are provided by a receiver front end in an optical transmission channel carrying transmitted symbols. Other embodiments are also described.Type: GrantFiled: September 9, 2011Date of Patent: June 4, 2013Assignee: Fundación TarpuyInventors: Mario Rafael Hueda, Diego Ernesto Crivelli, Hugo Santiago Carrer
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Publication number: 20120106615Abstract: An embodiment of the invention is a technique to equalize received samples. An equalizer equalizes a multidimensional signal transmitted over a communication channel and having a dimensionality of four or higher. The equalizer is adaptively trained based on an optimality criterion.Type: ApplicationFiled: January 9, 2012Publication date: May 3, 2012Applicant: FUNDACION TARPUYInventors: Hugo Santiago Carrer, Diego Ernesto Crivelli, Mario Rafael Hueda
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Patent number: 8116367Abstract: An embodiment of the invention is a technique to equalize received samples. An equalizer to equalize a multidimensional signal transmitted over a communication channel and having a dimensionality of four or higher. The equalizer is adaptively decision directed trained.Type: GrantFiled: June 15, 2009Date of Patent: February 14, 2012Assignee: Fundación TarpuyInventors: Hugo Santiago Carrer, Diego Ernesto Crivelli, Mario Rafael Hueda
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Publication number: 20120002977Abstract: An embodiment of the invention is a technique to equalize received samples. A coefficient generator generates filter coefficients using an error vector and input samples. A filter stage generates equalized samples from input samples using the filter coefficients. The received samples are provided by a receiver front end in an optical transmission channel carrying transmitted symbols. Other embodiments are also described.Type: ApplicationFiled: September 9, 2011Publication date: January 5, 2012Applicant: FUNDACION TARPUYInventors: Mario Rafael Hueda, Diego Ernesto Crivelli, Hugo Santiago Carrer
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Patent number: 8041233Abstract: An embodiment of the invention is a technique to equalize received samples. A coefficient generator generates filter coefficients using a rotated error vector. A filter stage generates equalized samples or slicer input vector from received samples or rotated received samples using the filter coefficients. The received samples are provided by a receiver front end in an optical transmission channel carrying transmitted symbols.Type: GrantFiled: July 14, 2004Date of Patent: October 18, 2011Assignee: Fundación TarpuyInventors: Mario Rafael Hueda, Diego Ernesto Crivelli, Hugo Santiago Carrer
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Patent number: 7623797Abstract: An embodiment of the invention is a technique to equalize received samples. An optical to electrical converter (OEC) produces an electrical signal vector representing at least one of amplitude, phase, and polarization information of a modulated optical carrier transmitted through an optical channel with impairments. A signal processor processes the electrical signal vector to compensate the impairments of the optical channel. The signal processor includes at least an adaptive equalizer to generate an equalized output, a decision, and an error. The error is difference between the equalized output and the decision. The adaptive equalizer has an adaptation based on at least the error.Type: GrantFiled: July 14, 2004Date of Patent: November 24, 2009Assignee: Fundacion TarpuyInventors: Diego Ernesto Crivelli, Hugo Santiago Carrer, Mario Rafael Hueda
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Patent number: 7580454Abstract: An embodiment of the invention is a technique to equalize received samples. An equalizer to equalize a multidimensional signal transmitted over a communication channel and having a dimensionality of four or higher. The equalizer is adaptively decision directed trained.Type: GrantFiled: July 14, 2004Date of Patent: August 25, 2009Assignee: Fundacion TarpuyInventors: Hugo Santiago Carrer, Diego Ernesto Crivelli, Mario Rafael Hueda