EP 1247110 A1 20021009 - SINGLE ENDED MEASUREMENT METHOD AND SYSTEM FOR DETERMINING SUBSCRIBER LOOP MAKE UP
Title (en)
SINGLE ENDED MEASUREMENT METHOD AND SYSTEM FOR DETERMINING SUBSCRIBER LOOP MAKE UP
Title (de)
EINSEITIG BEENDETES MESSVERFAHREN ZUR ERMITTLUNG DER SCHEIFENKONFIGURATION EINES TEILNEHMERS
Title (fr)
SYSTEME ET PROCEDE DE MESURES ASYMETRIQUES SERVANT A DETERMINER LA CONSTITUTION D'UNE BOUCLE D'ABONNE
Publication
Application
Priority
- US 0016865 W 20000619
- US 14112199 P 19990625
Abstract (en)
[origin: WO0101158A1] A method and system for determining the make-up of a subscriber loop (220) comprising sending pulses onto a loop and acquiring data based on received echo signals. Determining (7301) from the received echoes each discontinuity on the loop and, based on each discontinuity, determining a channel transfer function (7305) for each loop section preceding the discontinuity. The transfer function is then used to synthesize an inverse filter (7309). The inverse filter and acquired data are convolved for all the loop sections preceding the discontinuity (7313). The method may be further improved by modeling real and spurious echoes and subtracting these echoes from the echoes generated in the loop.
IPC 1-7
IPC 8 full level
H04B 3/46 (2006.01); G01R 19/00 (2006.01); G01R 27/06 (2006.01); G01R 31/11 (2006.01); H04L 1/24 (2006.01); H04L 25/02 (2006.01); H04M 3/30 (2006.01); H04M 3/08 (2006.01)
CPC (source: EP)
H04B 3/46 (2013.01); H04L 1/24 (2013.01); H04L 25/0202 (2013.01); H04L 25/0226 (2013.01); H04M 3/306 (2013.01); H04M 3/085 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0101158 A1 20010104; CA 2369858 A1 20010104; CA 2369858 C 20060221; EP 1247110 A1 20021009; EP 1247110 A4 20060809
DOCDB simple family (application)
US 0016865 W 20000619; CA 2369858 A 20000619; EP 00942949 A 20000619