The implementation of an adaptive echo canceller for high-speed digital data transmission
- 1 January 1991
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 1597-1600 vol.3
- https://doi.org/10.1109/icassp.1991.150565
Abstract
A prototype 1.6 Mb/s adaptive echo canceller for high-speed digital data transmission is presented. An analysis of the transmission line characteristics and echo path transfer function is first given, followed by a study of the echo canceller requirements and a description of the hardware and firmware. Finally, the performance of the echo canceller is given. It is shown that this 128-tap FIR (finite impulse response) echo canceller fully converges for a simulated echo path. The echo return loss exceeds 50 dB for a typical loop. Together with the hybrid, this echo canceller can provide the 60 dB of echo return loss required by the proposed system.Keywords
This publication has 2 references indexed in Scilit:
- Digital CommunicationPublished by Springer Nature ,1988
- On the Required Tap-Weight Precision for Digitally Implemented, Adaptive, Mean-Squared EqualizersBell System Technical Journal, 1979