how do radio signals (4G, WiFi etc.) manage to retain their information after passing through trees, buildings and other obstacles? And how are they not mixed up, intertwined?

Question

how do radio signals (4G, WiFi etc.) manage to retain their information after passing through trees, buildings and other obstacles? And how are they not mixed up, intertwined?

In: Technology

Answer 1

Radio wavelengths are quite large (0,1m-meters) and get less attenuated compared to say, optical wavelengths. But there is reduction of the radio waves, as it will be absorbed along the way. But as long as the signal is intact (in phase), it can communicate. And the needed error correction algorithms of course.