Title :
In-service nonintrusive measurement of echo parameters in telephone-type networks
Author :
Bertocco, Matteo ; Paglierani, Pietro
Author_Institution :
Dipt. di Elettronica e Inf., Padova Univ., Italy
fDate :
10/1/1998 12:00:00 AM
Abstract :
The paper presents an in-service nonintrusive technique for the measurement of the echo path delay and echo attenuation in telephone-type networks. The proposed method is based on a cross-correlation technique in conjunction with adaptive filtering of the observed transmitted signal. Experimental results show the high accuracy and robustness of the proposed measurement procedure
Keywords :
adaptive filters; correlation methods; delay estimation; echo; fault diagnosis; loss measurement; telecommunication equipment testing; telephone networks; transient response; RMS error; adaptive filtering; block delay estimation; communication system fault diagnosis; cross-correlation technique; echo attenuation; echo parameters; echo path delay; echo path loss; high accuracy; impulse response; in-service nonintrusive measurement; in-service testing; robustness; telephone-type networks; transmitted signal; Adaptive filters; Attenuation; Delay effects; Intelligent networks; Performance analysis; Robustness; Signal processing; Speech analysis; Telephony; Testing;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
