Wireless technology has shown rapid development over the last 15 years. With that in mind we look at the progression of the 802.11 protocol from the original legacy mode, through to the current “ac” mode.
802.11 legacy
The original 802.11 protocol, released in June 1997, is now known as legacy mode.
It ran on the Industrial Scientific Medical frequency (ISM) band at 2.4GHz, and employed techniques such as frequency hopping and direct-sequence spread spectrum (DSSS).
Infra-red (IR) signals for data transfer were also part of the standard, however these had no actual implementations. Continue Reading
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