The TDM, FDM, and CDM are different multiplexing techniques used by the physical layer. Mention the pros (at least one with explanation) and the cons (at least one with explanation) of each of these techniques.

TDM - Time-division multiplexing Pros: Time-division multiplexing systems are more flexible…

Answered: The TDM, FDM, and CDM are different…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

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The TDM, FDM, and CDM are different multiplexing techniques used by the physical layer.

Mention the pros (at least one with explanation) and the cons (at least one with explanation) of each of these techniques.

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Step 1

TDM - Time-division multiplexing

Pros:

Time-division multiplexing systems are more flexible than frequency division multiplexing.
Time-division multiplexing circuitry is not complex.
The problem of cross talk is not severe.
Full available channel bandwidth can be utilized for each channel.

Cons:

Synchronization is required in time-division multiplexing.
Complex to implement.
Due to slow narrowband fading, all the TDM channels may get wiped out.

2. FDM :

Pros:

The frequency division multiplexing does not need synchronization between its transmitter and receiver for proper operation.
A large number of signals (channels) can be transmitted simultaneously.
Due to slow narrowband fading, only a single channel gets affected.
The Demodulation process of frequency division multiplexing is easy.

Cons:

All the frequency division multiplexing channels get affected due to wideband fading.
A large number of modulators and filters are required.
The communication channel must have a very large bandwidth.
The frequency division multiplexing suffers from the problem of crosstalk. v intermodulation distortion takes place

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