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Bluetooth
1.2
This version is backwards
compatible with 1.1 and the major enhancements include
Bluetooth 2.0
This version is backwards compatible with 1.x. The
main enhancement is the introduction of Enhanced
Data Rate (EDR) of 3.0 Mbps. This has the following effects (Bluetooth
SIG, 2004):
1.2
This version is backwards
compatible with 1.1 and the major enhancements include
- Adaptive Frequency-hopping spread spectrum
(AFH), which improves resistance to radio
frequency interference by avoiding the use of crowded frequencies in the
hopping sequence - Higher
transmission speeds in practice - extended Synchronous Connections (eSCO), which improves voice quality of audio links by
allowing retransmissions of corrupted packets. - Host
Controller Interface (HCI) support for 3-wire UART - HCI
access to timing information for Bluetooth applications
Bluetooth 2.0
This version is backwards compatible with 1.x. The
main enhancement is the introduction of Enhanced
Data Rate (EDR) of 3.0 Mbps. This has the following effects (Bluetooth
SIG, 2004):
- 3
times faster transmission speed (up to 10 times in certain cases). - 100
meter range - Lower
power consumption through a reduced duty cycle. - Simplification
of multi-link scenarios due to more available bandwidth. - Further
improved BER (bit error rate) performance.
1
0
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