Knowledge

For the IEEE802.11 protocol in WiFi, a large number of data queries are conducted, and the historical development is summarized as follows. The following summary is not a comprehensive and detailed record, but a description of the protocols currently used in the market. IEEE 802.11, established i...

Since the Second World War, wireless communication has been given more attention because of its military application, which significantly improved the limitations of information transmission in the environment. Since then, wireless communication has been developing, but it lacks a wide range of c...

An optical fibre is a wired channel for transmitting optical signals.  We call the unwanted electrical signals in the channel “noise The noise in the communication system is superimposed on the signal. When there is no transmission signal, there is also noise in the communication system. &#...

The channel is a communication device connecting the transmitting end and the receiving end, and its function is to transmit signals from the transmitting end to the receiving end. According to different transmission media, channels can be divided into two categories: wireless channels and wired ...

In this article I’m going to talk about Communication System Model in details include their 5 parts, (1) Source coding and decoding, (2) Encoding and decoding of channels, (3) Encryption and decryption, (4) Digital modulation and demodulation, (5) Synchronization. Let’s dive deep̷...

1. Communication business classification According to different types of communication services, communication systems can be divided into telegraph communication systems, telephone communication systems, data communication systems, and image communication systems. Because the telephone communica...