Patent · US Expired

Single ended measurement method and system for determining subscriber loop make up

US6538451B1 · kind B1 · utility

50Cited by
26References
14Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 5, 2000
Grant dateMar 25, 2003
Priority date—
Expiry dateNov 13, 2020

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04B2203/5495
  • WIPO fieldTelecommunications
  • WIPO sectorElectrical engineering

Abstract

A method and system for determining the make-up of a subscriber loop having sending pulses onto a loop and acquiring data based on received echo signals. Determining from the received echoes each discontinuity on the loop and, based on each discontinuity, determining a channel transfer function for each loop section preceding the discontinuity. The transfer function is then used to synthesize an inverse filter. The inverse filter and acquired data are convolved for all the loop sections preceding the discontinuity. The method may be further improved by modeling real and spurious echoes and subtracting these echoes from the echoes generated in the loop.

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