Telephonic communications – Echo cancellation or suppression
Patent
1992-05-29
1994-07-12
Dwyer, James L.
Telephonic communications
Echo cancellation or suppression
379410, 379411, 364725, 364726, 3647242, H04M 100
Patent
active
053295862
ABSTRACT:
An echo canceler and associated method for canceling errors encountered in data communications which features reduced complexity and enhanced convergence properties arising from simplification of a table-lookup architecture corresponding to elimination of terms in a Volterra expansion. By adaptively adjusting the values stored in the reduced complexity lookup-tables, the system converges rapidly to the desired values.
REFERENCES:
patent: 4605826 (1986-08-01), Kanemasa
patent: 4609787 (1986-09-01), Horna
patent: 4669116 (1987-05-01), Agazzi et al.
patent: 4694451 (1987-09-01), Adams et al.
patent: 4977591 (1990-12-01), Chen
patent: 5007044 (1991-04-01), Miyoshi et al.
patent: 5148427 (1992-09-01), Buttle et al.
patent: 5153875 (1992-10-01), Takatori
D. W. Lin and M. L. Liou "A tutorial on digital subscriber line transceiver for ISDN" Proc. ISCAS-88 May 1988 pp. 839-846.
D. G. Messerschmitt, "Design issues in the ISDN U-interface transceiver," IEEE J. Selected Areas Commun., vol. SAC-4, No. 8, pp. 1281-1293, Nov. 1986.
O. Agazzi et al., "Large scale integration of hybrid-method digital subscriber loops," IEEE Trans. Commun., vol. COM-30, pp. 2095-2108, Sep. 1982.
O. Agazzi et al., "Nonlinear echo cancellation of data signals," IEEE Trans. Commun., vol. COMM-30, No. 11, pp. 2421-2433, Nov. 1982.
N. Holte and S. Stueflotten, "A new digital echo canceller for two-wire subscriber lines," IEEE Trans. Commun., vol. COMM-29, Nov. 1981, pp. 1573-1581.
C. F. N. Cowan et al., "Non-linear system modelling: Concept and application," Proc. ICASSP-84, San Diego, Calif., Mar. 1984, pp. 45.6.1-45.6.4.
G. L. Sicuranza et al., "Adaptive echo cancellation with nonlinear digital filters," Proc ICASSP-84, San Diego, Calif., Mar. 1984, pp. 3.10.1-3.10.4.
G. L. Sicuranza and G. Ramponi, "Distributed arithmetic implementation of nonlinear echo cancellers," Proc. ICASSP-85, Tampa, Fla., Mar. 1985, pp. 1617-1620.
O. Agazzi et al., "Timing recovery in digital subscriber loops," IEEE Trans. Commun., vol. COMM-33, No. 6, pp. 558-569, Jun. 1985.
AT&T Bell Laboratories
Dwyer James L.
Olson Katharyn E.
Ryan William
Saint-Surin Jacques M.
LandOfFree
Nonlinear echo canceller for data signals using a non-redundant does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Nonlinear echo canceller for data signals using a non-redundant , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonlinear echo canceller for data signals using a non-redundant will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-402974