Device for detecting a data signal energy drop

Details Device for detecting a data signal energy drop Device for detecting a data signal energy drop

1986-06-16

1988-10-25

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

307358, 328147, 340663, H04L 2502, G08B 2100

Patent

active

047808861

ABSTRACT:
The digital samples (An) representing the components in phase (X) and quadrature (Y) of data signals, are digitally integrated by the assembly comprised of multipliers (14 and 15) and an adder (16). The energy signal (Bn) which is obtained, is loaded into a register (17) so as to be provided with the energy signal obtained on the preceding sampling time. The value (Bs) of the energy signal from which the energy signal decrease rate exceeds a predetermiined value, is loaded into a register (21). Then a comparator (23) provides a binary 1 signal transmitted on the output line (25) as the energy drop signal when the value of the energy signal (Bn) has fallen below a predetermined fraction of the value (Bs) stored in register (21).

REFERENCES:
patent: 3479599 (1969-11-01), Molik
patent: 4160175 (1979-07-01), Trout
patent: 4199729 (1980-04-01), Durand et al.
patent: 4434378 (1984-02-01), Ballentine, Jr.

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