Essential Parts Of A Communication System Flashcards
Communication definition
“Communication is the exchanging of information from one location to another”
What does a transmitter do?
Converts electrical signal into a suitable signal for transmission over a given medium and performs amplified and modulation
Communication channel definition
“Communication channel is the medium by which the electronic signal is sent from one place to another”
Types of medium
Air
Electrical conductor
Free space
Fibre optic cables
Water
Receiver definition
“A receiver accepts the transmitted message and converts it back into an understandable form for humans”
Receiver examples
Tv
Am/fm
Transceiver definition
“A transceiver is an electronic unit that both sends and receives signals”
Attenuation definition
“Attenuation is the loss of power of a signal as it is transmitted through a medium”
Noise definition
“An unwanted, random electronic energy that enters a comm system”
Simplex
1 way transmission
Half duplex
One way at a time
Full duplex
Simultaneous transmission
