ZigBee specifies operation [17] in the unlicensed
2.4 GHz (worldwide), 915 MHz (Americas and
Australia) and 868 MHz (Europe) ISM bands.
Sixteen channels are allocated in the 2.4 GHz band,
with each channel requiring 5 MHz of bandwidth.
The 2.4 GHz band provides up to 250 kbit/s,
915 MHz provides up to 40 kbit/s and 868 MHz
provides a data rate up to 20 kbit//s. Binary phase-
shift keying (BPSK) is used in the 868 and 915 MHz
bands, and offset quadrature phase-shift keying
(OQPSK) that transmits two bits per symbol is used
in the 2.4 GHz band. The raw, over-the-air data eate
is 250 kbit/s per channel in the 2.4 GHz band, 40
kbit/s per channel in the 915 MHz band, and 20 kbit/s
in the 868 MHz band. Transmission range is between
10 and 75 meters (33 and 246 feet) and up to 1500
meters for ZigBee PRO, although it is heavily
dependent on the particular environment.
ZigBee specifies operation [17] in the unlicensed2.4 GHz (worldwide), 915 MHz (Americas andAustralia) and 868 MHz (Europe) ISM bands.Sixteen channels are allocated in the 2.4 GHz band,with each channel requiring 5 MHz of bandwidth.The 2.4 GHz band provides up to 250 kbit/s,915 MHz provides up to 40 kbit/s and 868 MHzprovides a data rate up to 20 kbit//s. Binary phase-shift keying (BPSK) is used in the 868 and 915 MHzbands, and offset quadrature phase-shift keying(OQPSK) that transmits two bits per symbol is usedin the 2.4 GHz band. The raw, over-the-air data eateis 250 kbit/s per channel in the 2.4 GHz band, 40kbit/s per channel in the 915 MHz band, and 20 kbit/sin the 868 MHz band. Transmission range is between10 and 75 meters (33 and 246 feet) and up to 1500meters for ZigBee PRO, although it is heavilydependent on the particular environment.
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