A performance study of various echo canceller structures for full-duplex 2-wire transmission environment

Author

Alvarez, A.M.

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore

fYear

1991

fDate

11-14 Jun 1991

Firstpage

2834

Abstract

A comparison is made of various echo canceller structures based on stochastic gradient search adaptive algorithms. These algorithms have been widely used in various adaptive filtering concepts like system identification and equalization. Due to full-duplex transmission over 2-wire connections, echo cancellation structures are considered. These structures allow transmission simultaneously in both directions using the complete channel bandwidth. The example selected is the full-duplex 2-wire CCITT V32-based modem environment used on private networks as well as PSTN connections

Keywords

adaptive filters; echo suppression; signal processing; 2-wire transmission environment; CCITT V32-based modem; LMS type; PSTN connections; echo canceller structures; full-duplex transmission; interleaved baseband structure; passband structure; private networks; stochastic gradient search adaptive algorithms; two-wire connections; Adaptive algorithm; Adaptive filters; Convergence; Echo cancellers; Finite impulse response filter; Frequency; Least squares approximation; Modems; Passband; Signal processing algorithms;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1991., IEEE International Sympoisum on

Print_ISBN

0-7803-0050-5

Type

conf

DOI

10.1109/ISCAS.1991.176134

Filename

176134