Question asked during 802.11ac Webinar: "Will wider channels require clean spectrum? Are there any changes to assist with interference?"

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Wi-Fi, like any radio communication method, depends on having a sufficiently strong signal that rises above the noise floor. As a practical matter, the new 256-QAM speeds in 802.11ac require about 5-7 dB higher signal strength. WIth so many unlicensed devices operating in 2.4 GHz, it is difficult to increase signal strength by that margin while remaining within power constraints, and that's one of the reasons why the 802.11ac specification is 5 GHz only.
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Matthew Gast

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Posted 5 years ago

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