Passive Selt
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsAntoni Fertner, Miguel Berg, Per Ola Borjesson, Daniel Cederholm, Klas Ericson
Life of this patent
Estimating the term…
Abstract
The present invention relates to a method for estimating properties of a transmission line by means of features of a noise spectrum generated by noise entering said transmission line at an intermediate location between the ends of the line. The invention provides possibility to estimate a number of properties, e.g. length of a portion of the transmission line, line attenuation of said Sine portion and even line termination.
Claims10
A method for estimating properties of a transmission line, said transmission line having a first end and a second end opposite to the first end, comprising the step of:
- measuring a spectrum of a noise at the first end of the transmission line;
- and
- estimating one or more transmission properties in dependence of features of said spectrum,
- wherein said noise enters said transmission line at an intermediate location between the first and the second end,
- and
- said transmission property estimates are estimates of transmission properties of a transmission line or a segment of the transmission line, said segment being the part of the transmission line between the location where noise enters the transmission line and the second end of the transmission line.
Dependencies are inferred from the claim text.