IEEE 802.16 specifies an air interface for PMP systems operating in the 10 - 66 GHz frequency range. IEEE 802.16a amends 802.16 by adding the specification for an air interface for both PMP and mesh systems operating in the 2 - 11 GHz frequency range. There are a number of options for different applications and to cater for the wide frequency range addressed in the standard. A mesh option using omni - directional antennas was included. This paper proposes the extension of the 802.16 standards to include a mesh option with substantially directional antennas.
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