Multiple-input multiple-output (MIMO) wireless uses different waveforms on typically two, but sometimes three or more transmitting antennas inputting to the channel
carrying radio waves from Point A to Point B. Multiple antennas and radios (typically, two or three) also are applied to the
output of the radio channel at the receiver, along with a lot of signal processing, which ideally improves range and throughput
compared with simpler or traditional radio designs operating under similar conditions.
Wavion to launch MIMO-ready outdoor APs
05/25/06
New MIMO Wi-Fi to outpace Ethernet
09/14/05
MIMO products boost 802.11g nets
03/21/05
MIMO is sometimes referred to as spatial multiplexing, because it users a third, spatial dimension - beyond frequency and time - as a carrier for information. The multiplicative effect of properly designed MIMO systems can be dramatic: As our tests show, the 100Mbps barrier (application-layer throughput) in wireless LANs has been broken. Indeed, the upcoming 802.11n standard will likely specify raw (physical layer) performance as high as 600Mbps via a 4-by-4 MIMO array.
MIMO is also likely to have an influence on so-called 4G cellular designs, but that's a different story.
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