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Designing and Deploying 802.11n Wireless Networks by Jim Geier

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Chapter 7. IEEE 802.11 Physical Layers

The 802.11 standard defines multiple physical layer specifications. An 802.11 station implements one of these physical layers, which interfaces with the common 802.11 Media Access Control (MAC) layer. Similar to the 802.11 MAC layer, the physical layers have undergone revisions since the ratification of the initial 802.11 standard. The most current 802.11 physical layer today resulted from the 802.11n amendment to the 802.11 standard, and several legacy physical layers based on other amendments to the standard (for example, ...

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