Knowledge

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...

Both signal and noise in communication can be regarded as random processes that vary with time. The random process has the characteristics of a random variable and a time function, and can be described from two different but closely related perspectives: ① the random process is a collection of in...

The communication method is the way that the two people talking to each other work together or send messages.  1. Simplex, half-duplex and full-duplex communication For point-to-point communication, according to the direction and time relationship of message transmission, the communication mode c...