Bluetooth
Technology Overview
Bluetooth® is a WPAN with low data rates combined with low power consumption. Bluetooth is a spread spectrum frequency hopping system that works in the internationally available ISM bands at 2.4 GHz. With Bluetooth Specification 2.0, enhanced data rate (EDR) was implemented. Future plans call for an increase in the data rate. Therefore, Bluetooth has chosen ultra wideband (UWB) as the physical layer.
Bluetooth also follows the trend to lower power consumption inside the WiBree standard, which is an ultra low power solution. Rohde & Schwarz supports Bluetooth with its own communications testers such as the R&S CBT.
Applications
Bluetooth is very popular in the cellular world for wireless headsets. With higher bandwidth, it addresses applications such as video streaming or wireless USB.
Key Parameters
| Bluetooth® (Basic Rate) | |
|---|---|
| Frequency Range |
Show / Hide
|
| Modulation | GFSK |
| Multiple Access | FHSS |
| Duplex (Uplink/Downlink) | TDD |
| Channel Bandwidth | 1 MHz |
| Number of Channels | 79 |
| Peak Data Rate | 1 Mbit/s |
| Max. Speed | 1 km/h |
| Max. Distance | 10 m |
Standardization
With Bluetooth EDR (Specification 2.0), Bluetooth can achieve very low power consumption. But higher data rates can only be achieved by an improved physical layer. With UWB (WiMedia MB-OFDM), Bluetooth holds the promise of establishing itself as a successful high data rate standard.
* The Bluetooth word mark and logos are owned by the Bluetooth SIG, Inc. and any use of such marks by Rohde&Schwarz is under license.
