Clearwire Tests Hit Near Full-Speed 4G, T-Mobile Doubles HSPA+ Speed
News Analysis: Tests of WiMax and LTE in Phoenix demonstrate that Clearwire's technology is getting close to being true 4G. T-Mobile doubles the speed of its HSPA+ network in Las Vegas tests.In a video released at the beginning of the Consumer Electronics Show in Las Vegas, Clearwire clearly demonstrates that it is very close to achieving the 100M-bps download speeds required by the ITU definition of 4G wireless communications. The company released a YouTube video of the tests, which are being conducted in Phoenix on an ongoing basis. The Clearwire tests, which were conducted in a mobile environment, showed that by using the 20MHz bandwidth, Clearwire's LTE and WiMax are currently capable of producing 90M- to 95M-bps download speeds, with uploads in the 30M-bps range. This is dramatically faster than anything demonstrated by any other carrier, and it shows that with a few tweaks, Clearwire will reach the ITU's 100M-bps requirement to actually be considered 4G.
There are a few caveats, however. As you can see in the Clearwire tests, the actual throughput is impacted by the network infrastructure. Clearwire's tests exceeded the network capacity in one set of tests, and only when it used its own servers was it able to reach full speed. It's also worth noting that the Clearwire test environment was essentially one mobile tester having the network to itself, something that would never happen in real life.