What this setup also removes is random noise, which is good for repeatability, but bad for real-life testing. My experiences doing similar are that there isn’t much of a grey area between a “great” throughput/packet error rate and “nothing works”.

It also removes the real-world crosstalk between the antennas.

So good for some things, especially automated tests, but it’s not a replacement for real field tests in the presence of random noise.
On Fri, Nov 3, 2017 at 15:51 Toke Høiland-Jørgensen <toke@toke.dk> wrote:
Since I had to (physically) move my wireless testbed recently, I had to
figure out a way to run reliable WiFi experiments in a cramped server
room. I ended up wiring everything up instead of running over the air,
and documented the process here, in case anyone wants to replicate it:

https://blog.tohojo.dk/2017/11/building-a-wireless-testbed-with-wires.html

Also, if anyone sees any fatal flaw in that setup, please do let me know :)

-Toke
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