Communications Blockset

Bluetooth Voice Transmission Demo

The Bluetooth Voice Transmission demo, bluetooth_voice, models part of a Bluetooth system. Bluetooth is a short-range radio link technology that operates in the 2.4 GHz Industrial, Scientific, and Medical (ISM) band. The demo modulates the signal using Gaussian frequency shift keying (GFSK) over a radio channel with maximum capacity of 1Mbps.

The demo uses frequency hopping over a 79 MHz frequency range to avoid interference with other devices transmitting in the band. In this scheme, the sender divides transmission time into 625 microsecond slots, and uses a new hop frequency for each slot. Although the data rate is only 1Mbps, a much larger bandwidth of 79MHz is required to simulate the frequency hopping effects.

This document highlights the following aspects of the Bluetooth Voice Transmission demo:

• Structure of the Demo
• Mask Variables
• Results and Display

256-Channel ADSL Demo

Structure of the Demo