Unguided Media

Explain Unguided Media:

In Unguided media, communication devices communicate with each other through air or space using microwave signals and infrared signals. It is also called unbounded media.

Different unguided media used in communication are follows:

1. Microwave:

Microwaves are radio waves that are used to provide high-speed transmission. Both voice and data can be transmitted through microwave. Data is transmitted through the air from one microwave station to other similar to radio signals. Microwave stations are placed within 20 to 30 miles to each other. Each station receives signal from previous station and transfer to next station.

2. Communication Satellite

Communication satellite is a space station. It receives microwave signals from earth station. It amplifies the signals and re-transmits them back to earth. Communication satellite is established in space about 22,300 miles above the earth. The data transfer speed of communication satellite is very high.

The transmission from earth station to satellite is called Up-link. The transmission from satellite to earth is called Down-link.

3. Mobile Communication

Mobile Communication is radio-based network. It transmits data to and from mobile computer. Computers can connect to the network via wired ports or wireless connections.