December 2019
Beginner
510 pages
12h 7m
English
Content preview from Networking Fundamentals
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IEEE 802.11ac
The final Wi-Fi standard I will cover is IEEE 802.11ac. This more recent standard returned to using a single frequency, namely, 5 GHz, but improved on the MIMO beamforming and channel bonding that we first saw in 802.11n. In fact, it utilized 40 MHz channels that could be bonded to make 80 MHz and 160 MHz channels. It also used a very efficient modulation technique called Quadrature Amplitude Modulation (QAM). These improvements allowed 802.11ac to have a staggering overall speed of 1.3 Gbps. However, the indoor range dropped back down to 35 m.
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