The IEEE 802 group initiated the IEEE 802.16 Working Group to create standards for broadband wireless access in order to offer a high speed/capacity, low cost, and a scalable solution to extend fiber optic backbones. To accommodate non-line-of-site access over lower frequencies, IEEE published 802.16a in January 2003, which includes support for mesh architecture. 802.16a operates in the licensed and unlicensed frequencies between 2GHz and 11GHz using orthogonal frequency division multiplexing (OFDM), which is similar to 802.11a and 802.11g.
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