I have recently asked myself, what causes the usual WLAN speed of today's wifi standards to differ so greatly from older ones.
Let's use 802.11b and 802.11ac as examples.
The maximal download rate of 802.11ac goes up to 1.6 Gigabit/s, which is roughly 150 times the download rate of 802.11b, which caps at 11 Megabit/s.
They both use the 2.4GHz frequency band with around 11 to 14 channels, depending on where you live.
Now what factor makes the difference here?
Or am I missing something obvious?