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multiple frequency shift keying (MFSK)

Multiple Frequency Shift Keying (MFSK) is a multi-frequency shift keying( FSK) technique that, in contrast to classical frequency shift ke ying, uses not only two but several frequencies for the transmission of the digitalsignals.

With multi-frequency shift keying, several signals can be modulated simultaneously or sequentially. The number of frequencies is calculated from the logarithm of 2 and can be between 2 and 64. The most commonly used is MFSK16. In multi-frequency keying, the ratio of the step rate( baud) to the data rate (bit/s) is lower than in binary transmission.

One of the best known MFSK methods is the two-tone method, which is used in telephone technology for dialing telephone numbers. Here, two tones are assigned to each symbol of the multi-frequency alphabet.

Englisch: multiple frequency shift keying - MFSK
Updated at: 29.09.2018
#Words: 122
Links: frequency shift, frequency shift keying (Modulation) (FSK), contrast, transmission, indium (In)
Translations: DE

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