With the news that WiFi will get a new version next year, and that it will be called WiFi 6, I thought I’d knock up a little guide to the previous versions of WiFi that we’ve had
|802.11b||Wi-Fi 1||11 Mbps||2.4GHz||1999|
|802.11a||Wi-Fi 2||54 Mbps||5GHz||1999|
|802.11g||Wi-Fi 3||54 Mbps||2.4GHz||2003|
|802.11n||Wi-Fi 4||600 Mbps (150 Mbps per stream)||2.4GHz or 5GHz||2009||Use of MIMO and multiple antennas up to 4 streams|
|802.11ac||Wi-Fi 5||600 Mbps (2.4GHz) + 2,167Mbps (5GHz)||2.4GHz and 5GHz||2013||Intorduced MU-MIMO. Up to 8 MIMO streams, wider channels, and 256QAM modulation. Typical speeds of around 500 Mbps — 1 Gbps|
|802.11ax||Wi-Fi 6||~11 Gbps||2.4GHz and 5GHz||2019||Uses 1024QAM and OFDMA. Uses lots of tweaks to increase efficiency of spectrum usage, resulting in much higher real world data rates|
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