Bluetooth uses which digital modulation technique to exchange information between paired devices?

Bluetooth uses which digital modulation technique to exchange information between paired devices?
A . PSK (phase-shift keying)
B . FSK (frequency-shift keying)
C . ASK (amplitude-shift keying)
D . QAM (quadrature amplitude modulation)

View Answer

Answer: A

Explanation:

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: π/4 DQPSK, and 8DPSK.

References: http://www.radio-electronics.com/info/wireless/bluetooth/radio-interface-modulation.php