Compare and contrast the bounded and unbounded transmission medias in detail?

Compare and contrast the bounded and unbounded transmission medias in detail?

Compare and contrast the bounded and unbounded transmission medias in detail?

Compare and contrast the bounded and unbounded transmission medias in detail?


Compare and contrast the bounded and unbounded transmission medias in detail?

The every communication between two device is transmitted. Even when you send anything from one device to another device its transmitted. The way or what is used to transmit this data is called transmission medias. It might be some sort of wire like a normal copper wire or even a radio frequency signal which is transmitted through the air or now we call it wireless. The Bounded means its some sort of physical item like cable and unbounded means wireless or its transmitted on air.

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The bounded media

The Bounded media are physical cables that travel through a narrow path. It is mainly made up of external conductor such as copper and covered by a non conductive material. It is also known as wired or guided media. The Bounded transmission means having connectivity between a source and destination using a wire or cables. So in bounded media signal will be travelling through the wire to its destination. The signal will not leave, except for smaller leakage amounts in bounded media. There are 3 types of bounded media. They are coper twisted pair, copper coaxial cable and optic fiber cable.

The Copper Twisted Cable

In coper twisted pair, two insulated wires or cable will be twisted together. The coper twisted pair is also again classified into two types known as shield twisted pair (STP) and unshielded twisted pair (UTP).

The Shield Twisted Pair

The shield twisted pair or STP is cables with the techniques of shielding, cancellation, and wire twisting. In shield twisted pair or STP the twisted pair of wire will be covered or wrapped in a metallic foil. The reason for covering the twisted pair of wire is to protect the transmission line from the noises and electromagnetic interference leaking into or out of the cable. Shielded twisted pair or STP are used in places like airports where there is too much noises. The unshielded twisted pair or UTP wire are not covered or wrapped in a metallic foil.

The un-shielded twisted pair

The unshielded twisted pair wire is cheaper than the shielded twisted pair wire. The twisted pair cables are used in homes and offices as ethernet cable. These cable supports low to high data rates but are not high as optic fiber cables. Other than ethernet cables, twisted pair wire is used in telephone communications also.

The coper coaxial cable

The coper coaxial cable are the cable which has a inner conductor(D) surrounded by tubular insulting layer©, surrounding by a conducting shield(B) and there is a outer plastic shield(A). The usually inner conductor is a solid copper, stranded copper or copper plated steel wire. The coper coaxial cable has a better shielding compared to shielded twisted pair or STP. Therefore, these cable have much more noise immunity and data transmission without distortion. Other than that these cable transmit digital signal  at very high rate. This is one of the reason why coper coaxial cable is used for video transmission. The cable tv also uses this type of cable for their transmission. It is also used in long distance telephone lines also.

The Fiber Optic

macro photography of orange fiber optic lamp
Photo by Guillaume Meurice on

The optic fiber cable is similar to an electrical cable, but optic fiber cable contain one or more optical fibers that are used to carry light. The optical fiber elements are typically separately coated with plastic layers and contained in a protective tube suitable for the environment where the cable will be deployed. The fiber optic cable has very high bandwidth more than 2 gigabytes per a second. It is used for long distance telecommunication and to provide high speed data connection. The optic fiber cable use both analog and digital signal and are not affected by electromagnetic interference, so noise and distortion will be very less. However, these cable are very expensive and difficult to repair once its broken.

The unbounded Media

antenna contact dawn dusk
Photo by Pixabay on

Unbounded media is in which the data transmission occurs through the air, commonly known as wireless. It is also known as un-guided or wireless media. Some example of unbounded media are microwave, radio wave, infrared waves and satellites. Microwave transmission use a transmitter and receiver with a clear path. If the path is not clear means it cant transmit data. Some times due to heavy rain and wind also it cant transmit data. But in radio transmission line of sight or clear sight is not necessary because radio waves can pass through the buildings. Infrared wave uses infrared light wave to transmit signal and can be blocked by hand or objects. Most type of remotes uses Infrared waves to transmit signal. The satellite transmission uses satellites to transmit signal. There are many satellites around a planet in a elliptical path.

Lets compare and contrast the bounded and unbounded transmission medias in detail 

Now that you have understood what is bounded and unbounded transmission media’s, lets put some point out some important details

  • Bounded media’s are physical wires
  • Unbounded media’s are wireless
  • Bounded media’s include copper twisted pair cables and fiber optic cables
  • Unbounded media’s include radio transmissions and satellite