An adaptive echo canceller utilizing the conjugate gradient method in a time-variant telecommunication channel

Seungwon Choi, Youngwha Kim, Tapan K. Sarkar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

An efficient procedure using the conjugate gradient method (CGM) is presented for adaptively computing the optimal set of coefficients for an echo canceler such that the solution can be obtained in a time-variant environment as well as in an ordinary time-invariant situation. By setting a functional which monotonically decreases at each iteration, the convergence is guaranteed for any signal matrix. The fast convergence of the CGM enables the proposed method to be applied in a nonstationary signal environment in which the optimal solution must be computed independently at each sampling period. Computer simulations indicate that the technique can be used for canceling echo signals much more efficiently than conventional methods in terms of the convergence speed and conformation of the convergence itself.

Original languageEnglish (US)
Title of host publication41 IEEE Veh Technol Conf
PublisherIEEE Computer Society
Pages149-154
Number of pages6
ISBN (Print)0879425822
StatePublished - May 1 1991
Event41st IEEE Vehicular Technology Conference - St. Louis, MO, USA
Duration: May 19 1991May 22 1991

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)0740-0551

Other

Other41st IEEE Vehicular Technology Conference
CitySt. Louis, MO, USA
Period5/19/915/22/91

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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  • Cite this

    Choi, S., Kim, Y., & Sarkar, T. K. (1991). An adaptive echo canceller utilizing the conjugate gradient method in a time-variant telecommunication channel. In 41 IEEE Veh Technol Conf (pp. 149-154). (IEEE Vehicular Technology Conference). IEEE Computer Society.