There are two WiMAX CPE types, residential gateway and mobile. The mobile can be included in handsets but likely see use in nomadic instead of true mobile.

Some countries have initially allocated 3.5Ghz band which doesn't work in mobile mode too well. 2.5Ghz is suitable for mobile use but most European countries have yet to allocate this spectrum.

The number of sectors is design dependent. Some use 120 degree (3 sectors) and some use 90 degree (4 sectors) antennae diversity. I thought CDMA/EVDO antennae diversity can be even narrower.

The other issue that I forgot to mention is that WiMAX is running 2.5GHz, while EVDO (VZ) in most parts of the US is at 800MHz -- so building penetration becomes a huge huge issue.

I'm currently connected in Philadelphia with a XOHM home router. (sssh!)

Why do you think WiMAX was not designed with the mobile user in mind? XOHM is especially designed for the mobile user. XOHM is internet access that is with you at home or on the go. You get true broadband speeds like your cable or DSL experience, but mobile. You no longer have to search for hotspots to get high internet speeds � now the hotspot comes with you. XOHM was built from the ground up for the mobile internet user. I'm working with XOHM, so if you have any questions, let me know.

I agree with your points, but allow me to clarify my statement: 802.16 as a PHY standard was not designed for mobile applications. 802.16e addressed mobile environments and while it works, it is not as robust as the original specification for stationary line-of-site operations. In sum, WiMAX was not originally designed to be truly mobile, where other standards are for the most part.

XOHM is indeed designed for the mobile user, but the technology that powers it has included mobile users as an afterthought. It's just my lowly opinion that doesn't count for anything, but I think WiMAX will be outdone in a few years, much like Moto's iDEN.

I disagree. Robust as what? Did they change the PHY when they went from 802.16 to 802.16e-2005? Go take a look at the 802.16e standard. I have all 840 pages of it sitting on my desk. I haven't done any formal testing yet with mobile operations, but I have done some informal work driving around in a Jeep. It works and it works well. Not sure if it can complete with the 3G technologies like EVDO.

I'm not sure what iDEN has to do with the WiMAX. iDEN still has its place in the world.

Normally this term is "line-of-sight".

There is some truth to this. Not due to the signaling scheme (modulation, propagation etc) but due to the power it needs to afford high speed. LTE is more geared toward mobile by using a lower performance but lower power uplink signaling scheme (SC-FDMA vs OFDM in WiMAX). So it is more suitable for small handheld devices. Rationale goes that a handheld device won't be uploading gigabytes for sustained period.

No matter what they advertise, somethings don't work. I found out the hard way that CDMA2000 data (pre-EVDO) doesn't work at above 45MPH with a lost driver and me trying to get a mapquest map on a Treo650. Once he got off US101, the map came up. This is not in the boonies with weak signal either.

A Sprint EVDO card did a lot better giving me good connection at any highway speed.