Overview

Radio

• 2 modulation mode: 1. Basic Rate with GFSK (Gaussian Frequency Shift Keying); 2. Enhanced Data Rate with PSK(π/4-DQPSK and 8DPSK)
• Power control is optional. Devices with power control capability optimizes the output power in a physical link with LMP commands (see Link Manager Protocol). It is done by measuring RSSI and reporting back if the transmission power shall be increased or decreased if possible.

Reference

http://www.ee.ucla.edu/~lerong/ee202a/hw2/Introduction%20To%20Blue%20Tooth%20Networking.pdf
http://www.ccs.neu.edu/home/noubir/Courses/CSU610/S06/bluetooth.pdf — Protocol Architecture, Packet Format & States