[Battlemesh] 802.11ac improvements [was: What hardware still works?]

Juliusz Chroboczek jch at pps.univ-paris-diderot.fr
Thu Feb 25 15:33:32 CET 2016

>> On 40 MHz channels we do about x1.5+ in PC-radio-radio-PC measured TCP
>> bandwidth between n and ac, both in lab and in real links with Ubiquity
>> hardware.

> Interesting.  Perhaps the .11n driver doesn't implement the short guard
> interval?  SGI + 256-QAM as compared to SGI + 64-QAM would be a 48%
> increase, which would fit your figures.

Actually, that's not necessary.  You're seeing just 13% improvement over
what 256-QAM should give you, that's easily achievable with a slightly
better hardware implementation and no protocol-level improvements.

-- Juliusz

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