Hey chopsky, check out this article off IPWireless.com:
http://www.arcchart.com/blueprint/show.asp?id=337
Interesting discussion why WiMAX won't dislodged this just yet:
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..three companies – Flarion Technologies, IPWireless and Navini Networks - have emerged with compelling technologies that support broadband data access in mobile or nomadic environments as well as supporting voice traffic using voice over IP. Importantly, these companies offer simple USB modules or PC cards that extend coverage to desktop and notebook PCs.
These three vendors are each pushing solutions based on a number of established technologies...IPWireless is pushing UMTS-TDD, which is a standard closely related to UMTS-FDD, the flavour of 3G that European operators are adopting.
What makes these technologies so threatening is the shear superiority of their performance over W-CDMA. They all support data downlink speeds in excess of 500Kbps several kilometres from a base station. By contrast, the limitations of W-CDMA, along with the fact that it requires capacity for both cellular voice and data services, means that operators are unlikely to support 3G connection speeds greater that 100Kbps. The voice requirement also limits the W-CDMA cell size, restricting coverage to just two to three kilometres from a base station.
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