Thursday 27 September 2012
the next generation Bluetooth zigbee
![[Image: pCzyy.jpg]](http://i.imgur.com/pCzyy.jpg)
![[Image: ZoeQd.gif]](http://i.imgur.com/ZoeQd.gif)
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* Modulation technique
Bluetooth: Frequency Hopping Spread Spectrum (FHSS)
ZigBee: Direct Sequence Spread Spectrum (DSSS)
* Protocol stack size
Bluetooth: 250K bytes
ZigBee: 28K bytes
* Battery
Bluetooth: Intended for frequent recharging
ZigBee: Not rechargeable (one reason batteries will last for up to 10 years)
* Maximum network speed:
Bluetooth: 1M bit/sec
ZigBee: 250K bit/sec
* Network range:
Bluetooth: 1 or 100 meters, depending on radio class
ZigBee: Up to 70 meters
* Typical network join time
Bluetooth: 3 seconds
ZigBee: 30 milliseconds
