Digital FSK demodulator

Details Digital FSK demodulator Digital FSK demodulator

1991-11-14

1992-10-13

Grimm, Siegfried H.

Demodulators

Frequency shift keying or minimum shift keying demodulator

329303, 375 80, 375 88, H04L 2714

Patent

active

051554461

ABSTRACT:
Digital FSK demodulators to be used in the telephone environment are disclosed. The demodulator according to one embodiment uses the sequential processing of a digital signal encoded in the fractional two's complement numeric representation. The use of multipliers is largely eliminated, thus enabling extensive use of simple shift registers and adders. Consequently the hardware complexity requirement is greatly reduced, thus resulting in very low cost products.

REFERENCES:
patent: 4568882 (1986-02-01), Single
patent: 4752742 (1988-06-01), Akaiwa
patent: 4785255 (1988-11-01), Lucak et al.

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