Bluetooth piconet

less than 1 minute read

Published: February 03, 2022

This post covers WIRELESS COMMUNICATIONS AND NETWORKS by William Stallings.

Basic Ideas

Bluetooth makes use of the 2.4-GHz band. In most countries, the bandwidth is sufficient to define 79 1-MHz physical channels. Power control is used to keep the devices from emitting any more RF power than necessary.
The power control algorithm is implemented using the link management protocol between a master and the slaves in a piconet.
Modulation for Bluetooth is Gaussian FSK, with a binary one represented by a positive frequency deviation and a binary zero represented by a negative frequency deviation from the center frequency. The minimum deviation is 115 kHz.