COMPUTER NETWORKS AND COMMUNICATIONS
WIRELESS COMMUNICATION TECHNOLOGIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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GFSK
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DQPSK
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BPSK
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MSK
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Detailed explanation-1: -7. Which modulation scheme is used by Bluetooth? Explanation: Bluetooth uses GFSK (Gaussian Frequency Shift Keying). When GFSK is used for Bluetooth modulation, the frequency of the carrier is shifted to carry the modulation.
Detailed explanation-2: -The original modulation scheme for Bluetooth was GFSK; however, the requirement for higher data rates later necessitated the addition of two forms of phase shift keying for enhanced data rate (EDR) capability: /4 DQPSK (a form of phase shift keying known as /4 differential phase shift keying.
Detailed explanation-3: -Modulation techniques The modulation technique for Bluetooth is GFSK or Gaussian Frequency Shift Keying. The modulation technique for WiFi network is OFDM or Orthogonal Frequency Division Multiplexing. It can also use another technique called QAM or Quadrature Amplitude Modulation.
Detailed explanation-4: -The Bluetooth modulation scheme is GFSK (Gaussian Frequency Shift Keying) with a symbol rate of 1Ms/s and modulation index between 0.28 0.35.
Detailed explanation-5: -One of the techniques Bluetooth technology uses to overcome interference and find a clear transmission path that avoids packet collision is the application of a form of frequency-hopping spread spectrum (FHSS) called adaptive frequency hopping (AFH).