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gaussian frequency shift keying (GFSK)

Gaussian Frequency Shift Keying (GFSK) is a modified frequency shift keying (FSK) technique that uses a Gaussian filter

. With this modulation method

, theproportion of harmonics

isreduced by narrowband filtering and crosstalk

isreduced

. TheGSFK method is used in the GSM standard, in Bluetooth, Bluetooth Low Energy (BLE) and in ANT or ANT+

. GFSK keying is available with two or four levels as 2GFSK or 4GFSK. In these versions, it is used in frequency hopping in 802.11.

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Englisch: gaussian frequency shift keying - GFSK
Updated at: 07.09.2015
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