IIP3 for RF front end in 802.16a

I need IIP3 of front-end for designing a 5 GHz Mixer in 802.16a. How I can calculate the value of the power of the input interferer, Pin?

The interferer power should be in the 802.16 spec somewhere.

Dave

I can't find it in IEEE std. only the Adjacent Channel Interference was in spec and there is nothing about Alternative one.

Has anyone designed RF blocks in 802.16a or 802.16?