IEEE 802.11n-2009
Formal
IEEE 802.11n-2009, commonly shortened to 802.11n, is a wireless networking standard that uses multiple antennas to increase data rates. The purpose of IEEE 802.11n-2009 is to improve network throughput over the two previous standards 802.11a and 802.11g.
Practical
The purpose of IEEE 802.11n-2009 is to improve network throughput over the two previous standards 802.11a and 802.11g, with a significant increase in the maximum net data rate from 54 Mbit/s to 600 Mbit/s (slightly higher gross bit rate including for example error-correction codes, and slightly lower maximum throughput) with the use of four spatial streams at a channel width of 40 MHz.
