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:
Oct. 16, 2012
Filed:
Oct. 27, 2005
Stefan Allevad, Stockholm, SE;
Per Ödling, Älvsjö, SE;
Antoni Fertner, Stockholm, SE;
Henrik Back, Vendelso, SE;
Fredrik Lindqvist, Älvsjö, SE;
Per Ola Börjesson, Lund, SE;
Jaume Rius I Riu, Vällingby, SE;
Stefan Allevad, Stockholm, SE;
Per Ödling, Älvsjö, SE;
Antoni Fertner, Stockholm, SE;
Henrik Back, Vendelso, SE;
Fredrik Lindqvist, Älvsjö, SE;
Per Ola Börjesson, Lund, SE;
Jaume Rius i Riu, Vällingby, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
A method and device for estimating one or more transmission properties of a telecommunication transmission line. At least one signal is sent on the line, the at least one signal including at least two frequencies for which the absolute value of the line propagation constant times the line length is less than π, and a resulting signal is received. An estimate of at least one transmission line property is then determined by examining the relationship between the sent and resulting signal or signals. The process may be repeated, if necessary. The estimate determination may also be repeated one or more times, with each successive estimate preferably using for the determination only those frequencies for which, as previously estimated, the absolute value of the line propagation constant times the line length is less than π.