>- how the cells, or the dna, or the receiver in the human body, is supposed to decode the signal transmitted in the carrier wave
Simple, read "Body Electric" by Dr. Robert O. Becker where he explains the presence of biological semiconductors. A semiconductor junction has the ability to rectify electrical signals.
This is one reason why some people can hear certain radio stations through a tooth or in their brain.
Before this was explained, people used to go literally insane from this phenomena, hearing voices in their heads.