Patent · US Active

Method and device for estimating properties of a telecommunication transmission line

US8290122B2 · kind B2 · utility

0Cited by

3References

16Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Stefan Allevad · Stockholm, SE
Per Ödling · Ayacucho, PE
Antoni Fertner · Stockholm, SE
Henrik Back · Handen, SE
Fredrik Lindqvist · Järfälla, SE
Per Ola Börjesson · Fontanafredda, IT
Jaume Rius i Riu · Söderhamn, SE

Key dates

Filing date	Oct 27, 2005
Grant date	Oct 16, 2012
Priority date	—
Expiry date	Sep 6, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH04B3/46
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.