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Aerospace & Defense Electronics Supplement
Early Returns: U.S. Export Control Reform Positive
A&D Test & Measurement
Efficient Design and Analysis of Airborne Radomes
From the November 2008 issue of Microwave Journal.
In 2008, the road to 4G has cleared a bit, with Ultra-mobile Broadband (UMB) left publicly by the roadside. However, the two remaining “4G” technologies, LTE and WiMAX, still present much speculation and confusion, InStat reported.
Generally, “4G” technologies are considered those which are expected to meet the ITU’s IMT-Advanced’s requirements, i.e. LTE and IEEE 802.16m WiMAX. Both of these are based on OFDM and offer the potential for download speeds of 100 Mbps and upload speeds of 50 Mbps. Both 4G technologies, talking from the perspective of 100 Mbps technologies, are far from being commercially deployed.
However, 802.16e Mobile WiMAX (802.16m’s slower predecessor) is starting to come on the scene, with Clearwire expected to launch its network in September 2008. For this reason, LTE proponents have jumped up their efforts to speed up development.
Several factors are expected to affect the rate of adoption of LTE and WiMAX over the next three to five years:
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