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Frequency Hopping Spread Spectrum
1
2
3
n
2.4GHz band is 83.5MHz wide (US & Europe)
n
Band is divided into at least 75 channels
n
Each channel is < 1MHz wide
n
Transmitters and receivers hop in unison among
channels in a pseudo random manner
n
Power must be filtered to -20db at band edge
,
4
5
6
7
8
TIME
f1
9
10
11
12
f5
f4
FREQUENCY
f3
f2
© Siemens, 2002
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