IEEE 802.11n is a wireless networking standard that uses multiple antennas to increase data rates. With this tag should be marked the questions relative to this specific version of the protocol.
IEEE 802.11n is a wireless networking standard that uses multiple antennas to increase data rates. It is an amendment to the IEEE 802.11-2007 wireless networking standard published in 2009.
IEEE 802 refers to a family of IEEE standards dealing with local area networks (LAN) and metropolitan area networks (MAN).
IEEE 802.11 is a set of media access control (MAC) and physical layer (PHY) specifications for implementing wireless local area network (WLAN) computer communication in the 2.4, 3.6, 5, and 60 GHz frequency bands
IEEE 802.11n is a set of media access control (MAC) and physical layer (PHY) specifications for implementing wireless local area network (WLAN); specifically it is an amendment published in 2009 that improves upon the previous 802.11 standards by adding multiple-input multiple-output antennas (MIMO).
With this tag should be marked the questions relative to this specific version of the protocol.
To have a more complete panorama about the protocols you can see this table of protocols.
Some details:
802.11n operates on both the 2.4 GHz and the lesser-used 5 GHz bands. Support for 5 GHz bands is optional. It operates at a maximum net data rate from 54 Mbit/s to 600 Mbit/s. The IEEE has approved the amendment, and it was published in October 2009.[15][16] Prior to the final ratification, enterprises were already migrating to 802.11n networks based on the Wi-Fi Alliance's certification of products conforming to a 2007 draft of the 802.11n proposal.
More details on the wikipedia page of IEEE 802.11n-2009.
Source of the standard in ieee.org site, 1076 pages.