New Mobile Network Technology at 2.5 GB/Second?

craig.hathaway writes to tell us that Japan's NTT DoCoMo claims to have a prototype wireless network capable of speeds up to 2.5 GB per second. From the article: "MIMO (multiple input, multiple output) uses multiple antennas to send and receive data, as well as specific coding that scrambles and unscrambles the signals produced by those antennas (see "Faster, Farther Wi-Fi"). A base station that uses MIMO technology has multiple antennas that simultaneously receive and send data to and from wireless devices. Unlike base stations with a single antenna, those with MIMO use the multiple antennas to create a number of intertwining channels through which data moves. The jumbled signals are untangled by a 'signal processing' that sorts through the bits."

So?

[emkman]

802.11(pre)N and Super Duper Ultra G routers have had MIMO for some time now. I guess this is new because it was rolled out on a larger scale?

Re:cluster?

[Vo0k]

The clustering itself - splitting the signal into multiple paralell streams, not such a simple deal (though certainly in use already) plus availablity, this is WiFi, for home and office, not intercontinental WAN. This technology hasn't been applied to WiFi until now yet.

Of course the review being written by a retard for retards is a different matter.

IEEE Spectrum

[Anonymous Coward]

Eh, I've seen this reported [ieee.org] in the IEEE Spectrum.

Nothing interesting here -- they say that currently they use fridge-sized receiver; the technology is
not quite there yet.