alt Hacker NewsOnly if the difference in signal power is high (>40 dB). It’s like saying collisions aren’t a problem in situations where no collision actually occurs.
Only if the difference in signal power is high (>40 dB). It’s like saying collisions aren’t a problem in situations where no collision actually occurs.
If I’m in the room with one of my APs, my closest neighbor is a hair under 40 dB lower. But I can see a dozen other networks on my street, which means the other signals are strong enough where my phone can decode the packets.
The point is that wireless networks can use not only the channel dimension, but the spatial dimension. That’s the basis of things like MIMO.