The Forum promotes and certifies compatibility and interoperability of products based on the IEEE 802.16 standards.

Once a standard is ratified and published, that "P" gets dropped and replaced by a trailing dash and suffix year of publication.

Other PHY features include support for multiple-input multiple-output (MIMO) antennas in order to provide good non-line-of-sight propagation (NLOS) characteristics (or higher bandwidth) and hybrid automatic repeat request (HARQ) for good error correction performance.

WiMAX certification by this group is intended to guarantee compliance with the standard and interoperability with equipment from other manufacturers.

The mission of the Forum is to promote and certify compatibility and interoperability of broadband wireless products.