In this note Poly Notes Hub will discus about the Elements of Basic Communication System. Also Gather the knowledge from this notes about the Block Diagram of basic communication system.
Author Name: Arun Paul.
Elements of Basic Communication System
The communication link with the analog signal is called Analog communication and the signal, linked with the digital signal is called Digital communication.
Depending on the technology used and the kind of information being communicated, basic communication systems can be either analogue or digital. They are employed in many different fields, such as broadcasting, computer networks, and telephony. Depending on the technology being used and the type of communication, different parts and procedures may be used.
Types of Communication System
- Based on Direction of Communication
- Simplex System
- Half Duplex System
- Full Duplex System
- Based on Nature of the Information Signal
- Analog
- Digital
- Based on Technique of Transmission
- Baseband Transmission
- Communication using Modulation
The essential components in a basic connection system are in the following block diagram.
Block Diagram of Basic Communication System
A. Source
The message or information is generated in the information source. The information may be voice or related to it.
B. Input Transducer
The input Transducer converts the non -non-electrical signal to an electrical one, which is suitable for transmission. The electrical signal is called a baseband or message signal.
C. Transmitter
The transmitter modifies the baseband or message signal for efficient transmission. The function of the transmitter is to modulate the signal for long-distance communication. The transmitter consists of a low-pass filter, sampler, coder, and modulator.
D. Channel
The channel is that medium, through which the baseband signal propagates from transmitter to receive, i.e., the channel provides a physical connection between the transmitter and the receiver. The channels may be wire, co-axial cable waveguide, optical fiber, radio link, etc.
E. Receiver
The receiver recovers the original message signal through demodulation. The receiver consists of a demodulator decoder, filter, and de-emphasizer.
F. Output Transducer
Output Transducer converts the electrical signal to the original message.
G. Noise
Noise are unwanted signal that interferes with the original signal. A noise is always random.
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