Originally, Gaussian frequency-shift keying (GFSK) modulation was the only modulation scheme available; subsequently, since the introduction of Bluetooth 2.0 + EDR, π/4-DQPSK and 8DPSK modulation may also be used between compatible devices.
Gaussian frequency-shift keying (GFSK) modulation was the only modulation scheme available. This was originally. Π/4-DQPSK may also be used between compatible devices. This was since the introduction of Bluetooth 2.0 + EDR. This was subsequently.8DPSK modulation may also be used between compatible devices. This was since the introduction of Bluetooth 2.0 + EDR. This was subsequently.