### 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 language | English |
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Title of host publication | 41 IEEE Veh Technol Conf |

Publisher | Publ by IEEE |

Pages | 149-154 |

Number of pages | 6 |

ISBN (Print) | 0879425822 |

State | Published - 1991 May 1 |

Event | 41st IEEE Vehicular Technology Conference - St. Louis, MO, USA Duration: 1991 May 19 → 1991 May 22 |

### Other

Other | 41st IEEE Vehicular Technology Conference |
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City | St. Louis, MO, USA |

Period | 91/05/19 → 91/05/22 |

### Fingerprint

### Cite this

*41 IEEE Veh Technol Conf*(pp. 149-154). Publ by IEEE.

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*41 IEEE Veh Technol Conf.*Publ by IEEE, pp. 149-154, 41st IEEE Vehicular Technology Conference, St. Louis, MO, USA, 91/05/19.

**An adaptive echo canceller utilizing the conjugate gradient method in a time-variant telecommunication channel.** / Choi, Seungwon; Kim, Youngwha; Sarkar, Tapan K.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - An adaptive echo canceller utilizing the conjugate gradient method in a time-variant telecommunication channel

AU - Choi, Seungwon

AU - Kim, Youngwha

AU - Sarkar, Tapan K.

PY - 1991/5/1

Y1 - 1991/5/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0026159976&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:0026159976

SN - 0879425822

SP - 149

EP - 154

BT - 41 IEEE Veh Technol Conf

PB - Publ by IEEE

ER -