Is there any dependency between SNR and Link Speed for WiFi AP?
Generally for radio receivers there is the following &quot;rule of thumb&quot; formula that describes the minimum received antenna power needed to operate at a low bit error rate: -
Receive power (dBm) = -154 dBm + 10log\$_{10}\$(data rate)
So if you have a 1Mbps data stream, you need to ensure the received signal is: -
-154 dBm + 60 dBm = -94 dBm.
I call it a rule of thumb because there is so much variability in radio but the actual formula is derived mathematically and I can recommend the document I use: -
&quot;Essentials of radio wave propagation&quot; by Christopher Haslett. I got mine by googling but it is getting difficult to find this way (without paying money of course)
OK try here and look on page 14: -