Hello, everyone!
Today, I would like to share with you a brief introduction on Wireless communication and its history.
Wireless communication is a method of transferring data or power between two or more points that are not connected by an electrical bus. The idea of wireless communication is to dispense with wires and provide various communication services to users everywhere: at home, in the car, on the plane, on the ship, in institutions, in universities etc.
On the other hand, providing the same services and features as wired communications. For example, wired computer networks such as LANs, MANs, and WANs were used, then came WLANs, which are commercially known as Wi-Fi, and then came WiMAX.
WiMax networks are based on the same idea, but cover much larger geographical areas than WiFi networks (at the city level). Of course, the data rate in wireless networks is lower than in wired networks, and they also suffer from problems such as security and protection, and interference problems.
Since ancient times, people have realized the need to achieve remote communication with each other.Twenty years after this invention, Guglielmo Marconi experimented with wireless communication, taking advantage of the propagation of electromagnetic waves in the air around the globe. His experience made it possible to expand the field of communication from a distance, and thanks to this, it was possible to disseminate audio information by radio broadcasting. Then, the uses of this discovery developed in television to transmit both image and sound, and in systems for transmitting data and images, remote sensing, radar, and civil and military space communications.
On the other hand wireless communication can be classified into routed wireless communication and unrouted wireless communication.
Directed wireless communications use directed antennas, and a simple example is the mobile phone network. The use of these antennas has many benefits, including: Contribute to reducing interference and interference between frequencies where there is a specific direction of the signal.
Routing contributes to reducing transmission power because the target is specific and not random, thus saving energy, great privacy, low noise in the channel itself.
Undirected wireless communications, as a clear example of which are radio broadcasts and television broadcasts, where there is one central tower in the city and transmits the signal in all directions with a high capacity for comprehensive coverage of the city.
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