I'm trying to check how general and valid protocol suite system ( layered structure ) are.
Does anyone know if radio communication ( broadcast ) via AM or FM , for instance can be viewed in the light of a layered structure ( for example, the OSI model ) as operating at least in one or more in layers ? Maybe could it be fair to say it operates only in the physical layer ?
Now suppose i have a really simple communication system between me and another guy and we implement communication digitally, with error-correcting ( but no signaling like in telephone and also not anything else apart from channel-coding and transmission through the channel) ...
Could it be fair to say that our communication system has only the physical layer ? Or would the communication system to require some protocol for the physical layer ? What would mean a protocol for a really simple physical layer ( like point-to-point one i described in the last example ) ?
I'm just trying to see if we can think about ANY communication system as operating in a layered structure ( like OSI ).