Publication detail

Testing of ITU-T G.168 Line-Echo Cancellers Using Matlab-GUIDE

MALENOVSKÝ, V., SMÉKAL, Z.

Original Title

Testing of ITU-T G.168 Line-Echo Cancellers Using Matlab-GUIDE

English Title

Testing of ITU-T G.168 Line-Echo Cancellers Using Matlab-GUIDE

Type

conference paper

Language

en

Original Abstract

During the last decade echo cancellers became an integral part of many telecommunication systems commercially available. Testing and standardization of such systems, however, is still under development and there are many aspects which have not been counted in. Above all standardization bodies dealing with line echo and its cancellation stands the ITU-T, which has developed and deployed the G.168 Recommendation. The recommendation itself represents a comprehensive set of tests for echo-canceller evaluation. This article addresses problems which might arise during practical implementation of G.168. It also discusses possibilities how to overcome them using Matlab-GUIDE and other tools. In particular, today’s evaluation systems are real-time hardware systems (embedded systems) which are controlled from a local PC or similarly. They are powerful and efficient but they are also very expensive. If we don’t need a real-time solution and if we accept the fact that the process of echo canceller testing would require much more time, we can do all the work off-line using Matlab.

English abstract

During the last decade echo cancellers became an integral part of many telecommunication systems commercially available. Testing and standardization of such systems, however, is still under development and there are many aspects which have not been counted in. Above all standardization bodies dealing with line echo and its cancellation stands the ITU-T, which has developed and deployed the G.168 Recommendation. The recommendation itself represents a comprehensive set of tests for echo-canceller evaluation. This article addresses problems which might arise during practical implementation of G.168. It also discusses possibilities how to overcome them using Matlab-GUIDE and other tools. In particular, today’s evaluation systems are real-time hardware systems (embedded systems) which are controlled from a local PC or similarly. They are powerful and efficient but they are also very expensive. If we don’t need a real-time solution and if we accept the fact that the process of echo canceller testing would require much more time, we can do all the work off-line using Matlab.

Keywords

echo canceller, G.168 recommendation, signal level measurement, testing signals, matlab, implementation

RIV year

2004

Released

24.10.2004

Publisher

WSEAS Publisher, Athens, Greece

Location

Rethymno, Greece

ISBN

1109-2734

Book

WSEAS Transactions on Circuits and Systems

Pages from

1787

Pages to

1792

Pages count

6

BibTex


@inproceedings{BUT11820,
  author="Vladimír {Malenovský} and Zdeněk {Smékal}",
  title="Testing of ITU-T G.168 Line-Echo Cancellers Using Matlab-GUIDE",
  annote="During the last decade echo cancellers became an integral part of many telecommunication systems commercially available. Testing and standardization of such systems, however, is still under development and there are many aspects which have not been counted in. Above all standardization bodies dealing with line echo and its cancellation stands the ITU-T, which has developed and deployed the G.168 Recommendation. The recommendation itself represents a comprehensive set of tests for echo-canceller evaluation. This article addresses problems which might arise during practical implementation of G.168. It also discusses possibilities how to overcome them using Matlab-GUIDE and other tools. In particular, today’s evaluation systems are real-time hardware systems (embedded systems) which are controlled from a local PC or similarly. They are powerful and efficient but they are also very expensive. If we don’t need a real-time solution and if we accept the fact that the process of echo canceller testing would require much more time, we can do all the work off-line using Matlab.",
  address="WSEAS Publisher, Athens, Greece",
  booktitle="WSEAS Transactions on Circuits and Systems",
  chapter="11820",
  institution="WSEAS Publisher, Athens, Greece",
  year="2004",
  month="october",
  pages="1787",
  publisher="WSEAS Publisher, Athens, Greece",
  type="conference paper"
}