Frequency and symbol rate offset compensating algorithms for simultaneous estimation of echo and channel responses

Author

Li, Weiping ; Chen, Xixian ; Wang, Yi ; Miki, Nobuhiro

Author_Institution

Training Center, Beijing Univ. of Posts & Telecommun., China

Volume

44

Issue

4

fYear

1998

fDate

7/1/1998 12:00:00 AM

Firstpage

1702

Lastpage

1708

Abstract

This article addresses two critical problems in designing new full-duplex fast training algorithms for simultaneously estimating echo and channel responses. Although algorithms of this type have been discussed and evaluated in previous work, the proposed algorithms concentrate on coping with the following two problems that were not solved in the previous approaches: (1) the symbol rate difference between the local transmitter and the remote transmitter, and (2) the frequency offsets in both far echo and far signal that are caused by the analog carrier network. The performance of the new methods is analyzed in terms of the mean square error. Simulation results are presented to confirm the analysis

Keywords

echo suppression; parameter estimation; signal sampling; telecommunication channels; transient response; Nyquist sampling theorem; analog carrier network; channel response estimation; echo cancellation; echo response estimation; estimation matrices; far echo; far signal; frequency offset compensating algorithm; full-duplex fast training algorithms; local transmitter; mean square error; performance analysis; received samples; remote transmitter; simulation results; symbol rate difference; symbol rate offset compensating algorithm; two-wire full duplex data modem; Algorithm design and analysis; Analytical models; Data communication; Degradation; Echo cancellers; Equalizers; Frequency estimation; Modems; Performance analysis; Transmitters;

fLanguage

English

Journal_Title

Information Theory, IEEE Transactions on

Publisher

ieee

ISSN

0018-9448

Type

jour

DOI

10.1109/18.681355

Filename

681355