Adaptive echo canceller

Details Adaptive echo canceller Adaptive echo canceller

1984-02-16

1986-12-30

Rubinson, Gene Z.

Multiplex communications

Wide area network

Packet switching

364819, 379411, H04B 320

Patent

active

046330461

ABSTRACT:
In order to prevent tap coefficient values from drifting toward excessively large values or divergence, an adaptive echo canceller is provided with a correction signal controller which (a) reduces the tap coefficient values upon the polarities of the tap coefficient signal and the tap coefficient correction signal coinciding and (b) increases the tap coefficient values upon the polarities differing.

REFERENCES:
patent: 3787645 (1974-01-01), Ochiai et al.
patent: 4007341 (1977-02-01), Sourgens et al.
patent: 4064379 (1977-12-01), Horna
patent: 4349889 (1982-09-01), van den Elzen et al.
patent: 4467146 (1984-08-01), Lassaux
patent: 4479036 (1984-10-01), Yumamato et al.

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