11N SYSTEMS USE MIMO TECHNOLOGY; THEY HAVE MORE RECEIVERS AND ARE...

802.11n systems use MIMO technology; they have more receivers and are much more

sensitive than the average 802.11a or 802.11g radio. The following techniques are what

allow for much higher data rates (currently up to 300 Mbps and eventually up to 600 Mbps):

Maximal ratio combining (MRC)

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Transmit beam forming (sometimes abbreviated TxBF)

Spatial multiplexing (sometimes abbreviated SM)

Spread Spectrum Technology 147f i g u r e 5 .11 MIMO hardware uses separate radio chains for each band and one antenna for each radio.