The relationship between Wi-Fi signal strength and the speed at which data can be transferred over that signal is something that is essential to understand when it comes to Wi-Fi performance.
One question we constantly get is this:
to a wireless network, does a stronger signal always imply faster webpage loading, downloads, etc?
The answer, like all answers to WI-Fi questions, can be difficult to get a grip on. So here’s a good, fairly simple explanation from one of our rocket-scientist founders, Bill Kish, that should help clarify things.
All other factors (of which there are many) being equal, stronger signal strength is correlated with higher data transfer speeds, with a couple exceptions and assuming an optimal physical layer data rate selection algorithm. The super detailed, professional and technical diagram below shows a typical relationship for any modern wireless system with adaptive modulation: