Control of coefficient drift for fractionally spaced equalizers

Details Control of coefficient drift for fractionally spaced equalizers Control of coefficient drift for fractionally spaced equalizers

1981-04-01

1983-03-08

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

328144, 455303, H04L 2503

Patent

active

043763081

ABSTRACT:
Tap coefficient drift in a fractionally spaced equalizer is minimized by causing the sampled signal to have energy in its "no-energy" bands, i.e., at frequencies at which the sampled channel transfer function has substantially zero gain. This is achieved by adding an out-of-band signal to the received data signal prior to sampling. The out-of-band signal is derived from the received data signal.

REFERENCES:
patent: 3845390 (1974-10-01), De Jager et al.
patent: 4190896 (1980-02-01), Knowlton
patent: 4247940 (1981-01-01), Mueller et al.
patent: 4309770 (1982-01-01), Godard

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