TL/DR: Simulating a low noise environment is lot easier than finding one in the real world. And that's not news.<p>Researchers simulated a 1Tb/s transfer rate within a 100Mhz channel. Shannon's limit[1] explains how: set the noise term arbitrarily small, and your transfer rate can be arbitrarily large.<p>Bandwidth is popularly misunderstood to be some fixed range of spectrum, as if signals outside the range are attenuated to zero. But you can't attenuate a signal to zero. "Bandwidth" is measured[2] as the range over which attenuation is less than (say) 3db.<p>If not for noise, you could utilize a limited-bandwidth channel as if it had infinite bandwidth merely by amplifying frequencies outside the range in the exact proportion they are attenuated.<p>But every real system has noise. Overcoming this noise is the challenge of high speed transfers. There's no indication these "researchers" have accomplished anything whatsoever.<p>[1] <a href="http://en.wikipedia.org/wiki/Noisy-channel_coding_theorem" rel="nofollow">http://en.wikipedia.org/wiki/Noisy-channel_coding_theorem</a><p>[2] <a href="http://en.wikipedia.org/wiki/Cutoff_frequency" rel="nofollow">http://en.wikipedia.org/wiki/Cutoff_frequency</a>
For reference, current DDR4 RAM to CPU is ~0.5 Tb/s [0].<p>[0] <a href="http://ark.intel.com/products/81059/Intel-Xeon-Processor-E5-2697-v3-35M-Cache-2_60-GHz" rel="nofollow">http://ark.intel.com/products/81059/Intel-Xeon-Processor-E5-...</a> (see "Max Memory Bandwidth")
Wouldn't there be a noise problem when all signals are broadcasted as in radio transmission!? Unless you point it like with a laser or microwave.<p>I would be hesitant putting a 1TB/s uplink next to my head. :P
This test is largely bunk. Its over 100 feet, in direct line of sight, using a client device that is a test device built exclusively for this (as in, it is not a phone nor a laptop nor anything small and underpowered like that).<p>They say "5G speeds" but neglect to tell you this is not done using LTE or Wimax (the only two protocols that ITU-R recognizes for 4G; 5G will use descendents of these as they are designed for many generation forwards and backwards compatibility in mind).