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You are here: Home / SWITCH / Module 9 / Extending the LAN with Wireless Solutions – Wireless LAN Standards

Extending the LAN with Wireless Solutions – Wireless LAN Standards

At the physical (PHY) layer, IEEE 802.11 defines a series of encoding and transmission schemes for wireless communications, the most common of which are the Frequency Hopping Spread Spectrum (FHSS), Direct Sequence Spread Spectrum (DSSS), and Orthogonal Frequency Division Multiplexing (OFDM) transmission schemes. Although Infra Red (IR) also exists at this layer, very little development of this standard has occurred due to line-of-sight limitations. The 802.11 standards described in this section are as follows:

  • IEEE 802.11 (original)
  • IEEE 802.11b
  • IEEE 802.11a
  • IEEE 802.11g
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