Method and apparatus for waveform equalization

Details Method and apparatus for waveform equalization Method and apparatus for waveform equalization

1988-09-06

1991-04-02

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375101, 333 18, H03H 730, H03H 740

Patent

active

050051849

ABSTRACT:
A waveform equalization method whereby a transversal filter having 5 or more tapes is included, and a difference signal output, which is obtained when an isolated impulse response waveform of a digital modulated signal is inputted to the above described filter and the output of the filter is inputted to an adder, is allowed to have intersymbol interference at .+-.T/2 with respect to the central axis time and has zero outputs at .+-.nT/2 (where n.gtoreq.2 and n is an integer).

REFERENCES:
patent: 3414845 (1968-12-01), Lucky
patent: 3508153 (1970-04-01), Gerrish et al.
patent: 3543009 (1970-11-01), Voelcker, Jr.
patent: 3670269 (1972-06-01), Starr et al.
patent: 4550415 (1985-10-01), Debus, Jr. et al.
patent: 4646327 (1987-02-01), Kojima et al.

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