Method of demodulation

Details Method of demodulation Method of demodulation

1990-05-03

1992-08-25

Mis, David

Demodulators

Frequency shift keying or minimum shift keying demodulator

375 88, 375 97, H03D 300, H03K 906

Patent

active

051422379

ABSTRACT:
A method of demodulation is provided for demodulating a signal in which different data symbols are represented by different frequencies, such as a modem. A set of undelayed and a set of delayed sample values are provided and a frequency transform calculation is performed on the difference between the first N undelayed values and the last N delayed values. An early/late synchronization decision is taken dependent on the difference value.

REFERENCES:
patent: 4291269 (1981-09-01), Nossen

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