GFSK

The Gaussian Frequency Shift Keying (GFSK) modulation scheme is a digital modulation technique used in various wireless communication systems, including Bluetooth. GFSK is a variation of Frequency Shift Keying (FSK), where the key difference lies in the application of a Gaussian filter to the digital signal before it is modulated. This process smoothens the signal, reducing the bandwidth required for transmission and minimising interference with neighbouring channels. The GFSK modulation scheme is favoured for its efficiency in power and bandwidth usage, making it ideal for low-power, high-data-rate wireless applications.