Types of Multiplexing Techniques for CSIR NET JRF 2019
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Watch Video Lecture on YouTube: Types of Multiplexing Techniques: FDM WDM and TDM (Computer Science)
Types of Multiplexing Techniques: FDM WDM and TDM (Computer Science)
Topics:
FDM (Frequency Division Multiplexing)
WDM( Wavelength Division Multiplexing)
TDM (Time Division Multiplexing)
a. Synchronuous TDM
b. Asynchronuous TDM
Complete notes and preparation module at doorsteptutor.com
FDM
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FDM stand for Frequency Division Multiplexing Technique.
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In FDM, different frequencies will be combined as the one frequency and transmitted in the channel and at the receiver end again it will be separated as it was.
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It is totally based upon the frequency combining and division
Working of FDM

Image of Working of FDM
Image of Working of FDM
WDM
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WDM stands for wavelength Division Multiplexing Technique.
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It multiplexes the optical carrier signals into a single optical fibre signal and transmit it further to the channel.
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It is widely used in SONET (Synchronous Optical Network) with high efficiency.
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Image of Working of FDM
Image of Working of FDM
Working of WDM
TDM
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It stands for Time Division Multiplexing Technique of Multiplexing.
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Each frame or packet of data will be allotted the time slot.
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It transmits the digital signals over the transmission network.
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It is used for high speed transmission
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It can be of two types:
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Synchronous TDM (with common clock signal sharing)
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Asynchronous TDM (without sharing common clock)
MCQ
Q1. Which type of multiplexing technique is used in SONET?
Options:
A. Asynchronous TDM
B. FDM
C. WDM
D. Synchronous TDM
Answer: C
Q2. SONET is:
Options:
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Synchronous Optical Network
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Simultaneous Optical Network
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Synchronous Optimized Network
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Structural Optical Network
Answer: A
We learnt about:
#Frequency Division Multiplexing
# Wavelength Division Multiplexing
# Time Division Multiplexing
# Synchronous Time Division Multiplexing
# Asynchronous Time Division Multiplexing
-Mayank