2.4 GHz Frequence Band– IEEE 802.11b

• spread spectrum technology

  • 2.4 GHz ISM band has other primary owners, operates at 600 W power level; IEEE 802.11b: max. 100 mW
  • spread-spectrum-technology
  • non-sensitive against narrow-band interference (e.g. noise)

frequence

signal

F

F

after spread spectrum

Spectrum after modulation

power

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