Bluetooth uses which digital modulation technique to exchange information between paired devices?
Bluetooth uses which digital modulation technique to exchange information between paired devices?
Bluetooth primarily uses frequency-shift keying (FSK) for its communication. Specifically, it uses Gaussian Frequency-Shift Keying (GFSK) for basic data rates. While Phase-Shift Keying (PSK) is indeed used for Enhanced Data Rate (EDR) in Bluetooth, the fundamental modulation technique for basic Bluetooth communication is FSK. Therefore, FSK is the correct answer.
Answer A Phase shift keying is the form of Bluetooth modulation used to enable the higher data rates achievable with Bluetooth 2 EDR (Enhanced Data Rate). Two forms of PSK are used: /4 DQPSK, and 8DPSK
B - Reason: The question asked about the modulation technique used by Bluetooth to exchange information between paired devices in general, not specifically for EDR. For standard Bluetooth (Basic Rate), the modulation technique used is Gaussian Frequency Shift Keying (GFSK)