Introduction to Analog and Digital Communication | The Basic Block Diagram of Communication System
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Published 2020-05-10
What is Communication?
Communication is the exchange of information between the two or more points.
Electronics point of view, it is the exchange of information using the electronic device or gadget between two or more points which can be far away from each other.
The Basic Block diagram of the Communication System:
The communication system contains the following basic blocks:
1) The Source
2) Input Transducer
3) Transmitter
4) Channel
5) Receiver
6) Output Transducer
Source:
The source is the origin from where the message signal is generated.
The message could be voice signal, email, Television Signal, or data.
Input Transducer:
Using the input transducer, the message signal is converted into the electrical signal.
Transmitter:
The transmitter signal modifies the input signal for efficient transmission.
The transmitter may contain several sub-systems like modulator, analog to digital converter, encoder, amplifier etc.
Channel:
The channel is the medium over which the transmitted signal is transmitted.
The channel could be physical channel (e.g optical fiber, co-axial cable) or wireless channel (radio link)
The channel partly behaves like a filter and, attenuates and distorts the transmitted signal.
The receiver:
For faithful communication, the receiver should be able to recover the message signal from the received (distorted and attenuated) signal.
The receiver also contains several subsystems like, demodulator, decoder, digital to analog converter, amplifier.
Output Transducer:
The output of the receiver is given to the output transducer. Speaker, monitor screen are examples of the output transducer.
This video will be helpful to everyone in understanding the basic block diagram of the communication system.
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All Comments (21)
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