What Are The 3 Major Multiplexing Techniques?

Multiplexing Techiques

Multiplexing is the process/technique of dividing unmarried channel into multiple share tosend/transfer multiple information simultaneously at same time.
Multiplexing techniques is really efficient/effective applied scientific discipline which reduces the toll of the cables. You don’t have got to purchase unique cable for each type of data. For example, if yous desire to ship audio, video as well as documents etc, yous don’t have got to specify a cable for every type of data, rather yous tin flame multiplexing technique to ship all these 3 types of information using a unmarried cable simultaneously.
The next diagram shows the multiplexing technique:

In multiplexing, ii devices are used Mux as well as De Mux

Mux:

Mux stands for Multiplexer. It is responsible to multiplex (combine) multiple links to transfer inward a unmarried channel every bit shown inward the higher upwardly diagram. Commonly the multiplexer is specify at the sender side because if the sender wants to ship dissimilar types of information , it has to hold out multiplexed outset to ship into a unmarried channel.

De Mux:

De mux stands for De Multiplexer. It is responsible to separate the multiplexed links from a unmarried channel into dissimilar separate links.  Commonly the de-multiplexer is specify at the receiver side because when the receiver have dissimilar types of information from a unmarried channel , it needs to hold out separate or de-multiplex.

There are ii types of multiplexing

Analog :

Analog multiplexing is sub categorized into ii types of multiplexing

1. Wavelength Division Multiplexing (WDM).
2. Frequency Division Multiplexing (FDM).

Digital :

Digital multiplexing includes Time Division Multiplexing (TDM).

1. Wavelength Division Multiplexing : ( WDM )

In unproblematic words the multiplexing on the base of operations of wavelength is the wavelength partition Multiplexing. It is an analog technique. WDM multiplex dissimilar numbers of optical lite wavelength to transfer inward a unmarried fiber.  Each wavelength brand a virtual fiber to transfer inward a fiber thence that it depends on the speed (frequency) of the wavelength. The wavelength of high speed volition attain outset as well as wavelength alongside depression speed volition attain later.

WDM is same every bit FDM but the deviation is that the Multiplexing as well as De Multiplexing of WDM includes lite wavelengths piece that of FDM includes frequencies.

WDM

The best instance of WDM is the prism , which shows the diverse colors after De Multiplexing the light.

WDM (Prism)

You tin flame run across that a unmarried channel of lite is divided into dissimilar colors using prism. If yous transcend the dissimilar divulge of colors from the side of the unmarried light, it volition demo unmarried lite channel on the contrary side.

Wavelength partition multiplexing is sub divided into ii types:

1. Uni-Directional WDM:

In uni-directional WDM , information is ship alone from i side as well as wear the other side. Multiplexing of the wavelength occurs on the sender side as well as de-multiplexing of the wavelengths accept house on the receiver side.

The diagram below shows uni-directional WDM inward which sender multiplex the wavelength as well as receiver de-multiplex it.

Uni-directional WDM

2. Bi-Directional WDM:

As the nurture shows the bi-directional hateful both sides, In bi-directional WDM the wavelength tin flame hold out ship from both side which agency that both sides (sender  & receiver) tin flame create multiplexing as well as de-multiplexing.

The diagram below shows Bi-directional WDM inward which sender as well as receiver both tin flame multiplex as well as de-multiplex the wavelength

 Bi-directional WDM

2. Frequency Division Multiplexing : ( FDM )

Multiplexing on the base of operations of frequency is called Frequency partition multiplexing ( FDM ).  It is an analog technique of Multiplexing dissimilar frequencies of dissimilar links to transcend through a unmarried cable.

The link having high frequency volition attain outset as well as that is the link having depression frequency volition attain afterward every bit It depends on the frequency.

The diagram below shows the frequencies that are multiplexed inward a unmarried channel as well as past times reaching its destination, it is as well as thence De multiplex to frontward to the correct destination.

FDM

3. Time Division Multiplexing : ( TDM )

Time partition multiplexing is a digital technique of combining dissimilar links to transfer through a unmarried channel. Influenza A virus subtype H5N1 unmarried channel is divided into dissimilar fourth dimension slots inward which dissimilar type of information is sending on the base of operations of time. Every link have got specific fourth dimension for transferring.
For example:  the slot 1 is for downloading, slot 2 is for youtube, slot 3 is for searching as well as slot four is for facebook. When downloading completes the slot 1 (downloading slot) volition become empty. Similarly when slot 2 finishes the slot  2 volition become empty.

Reference Book: Data Communication And Networking 2d Edition
Reference Site: https://en.wikipedia.org/wiki/Multiplexing

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