Engineering Design of Wireless Communications and Networks: Review

Abstract

Wireless networks are a type of computer network that works to transfer information between nodes without using wires. This type of network is implemented with remote-controlled information transmission systems through the use of electromagnetic waves such as radio waves as a carrier of the information signal. This implementation is usually done in the physical layer of the network, a telecommunications network is a network consisting of a group of sending and receiving devices and communication channels that are used to send messages between sending and receiving devices. While communication networks consist of Digitization is one or more switches that achieve communication between two or more users. Communication networks of both types, whether digital or non-digital, contain repeaters or signal amplifiers, which are necessary to amplify signals or re-establish them when signals are sent over long distances in order to reduce the occurrence of attenuation, which causes the inability to distinguish between the transmitted signal and disturbance accompanying it. Another advantage of using digital systems instead of digital systems is that the outputs of digital systems are more easily stored in memory, which means that it is easier to store two signals with different voltages (high, low) than to store a series of voltage signals.