Modulation Techniques in Bluetooth Technology

Wireless Technology Standard for exchanging data in short ranges using UHF radio waves

Works on ISM band 2.4 - 2.485 GHz

   Bluetooth v1.0

  Bluetooth v1.1

Bluetooth v 2.1

Bluetooth v3

Bluetooth v4 - Bluetooth Smart

- first beta version

- 2002 IEEE Standard 802.15.1

- 2007 EDR introduced

- 2009 HS introduced

2009 Ultra-Low Energy

Bluetooth 1.2

- 2005 Radio frequency (AFH) improved

GFSK

Frequency modulation using

Guassian filter

Supported by all version of Bluetooth

π/4-DQPSK

Introduced in Bluetooth 2.0

for high data rates

Ranges between

+45 ~ -45

+135 ~ -135

8DPSK

Introduced with Bluetooth 2

Example usage

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