Communication Systems
Collection of electronic components and circuits that converts the electrical signal into a signal suitable for transmission over a given medium
Transmitter
The simplest method
simplex
makes the information signal more compatible with the medium
modulation
Medium by which the electronic signal is sent from one place to another
Communication Channel
The form of two-way communication in which only one party transmits at a time
Half Duplex communication
the baseband information signal called the modulating signal varies the amplitude of the higher-frequency carrier signal
Amplitude modulation
Collection of electronic components and circuits that accepts the transmitted message from the channel and converts it back into a form understandable by humans
Receivers
The telephone is an example of this type of communication.
full duplex communication
the information signal varies the frequency of the carrier.
frequency modulation