The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 28, 2012
Filed:
Oct. 20, 2006
Fredrik Lindqvist, Älvsjö, SE;
Jaume Rius I Riu, Vällingby, SE;
Joäo C. Weyl Albuqerque Costa, Belém, BR;
Claudomiro DE Souza DE Sales, Jr., Belém, BR;
Fredrik Lindqvist, Älvsjö, SE;
Jaume Rius i Riu, Vällingby, SE;
Joäo C. Weyl Albuqerque Costa, Belém, BR;
Claudomiro de Souza de Sales, Jr., Belém, BR;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
A method and loop qualification unit for determining loop parameters of a topology of a twisted pair loop for a digital subscriber line system. The parameters are represented by a vector that receives a measurement of a SELT parameter measured at one end of the loop and a measurement of a DELT loop transfer function measured at both ends of the loop. A first model generator generates a first model for the SELT parameter and a second model generator generates a second model for the DELT function based on the loop parameters represented by the vector. A processor then determines the parameters by minimizing the differences between the first model and the SELT parameter, and the second model and the DELT function. The determined parameters are represented by the vector that provides the minimization.