Modem receiver pre-emphasis

Details Modem receiver pre-emphasis Modem receiver pre-emphasis

1994-12-13

1997-08-19

Chin, Wellington

Pulse or digital communications

Transmitters

Antinoise or distortion

375346, 375348, 375350, 375229, 370286, 370289, 370290, 379406, 379410, H04L 700

Patent

active

056595816

ABSTRACT:
A echo-canceling modem uses pre-emphasis in both the transmitter and receiver sections. In particular, the receiver section of the modem processes a received signal with a pre-emphasis filter before performing echo cancellation on the received signal. The receiver pre-emphasis filter is identical to the transmitter pre-emphasis filter, i.e., the pre-emphasis added in the receiver is the same as the pre-emphasis added in the transmitter.

REFERENCES:
patent: 5008903 (1991-04-01), Bett et al.
patent: 5280473 (1994-01-01), Rushing et al.

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