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."
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