Characteristics of analog communication system

The characteristics of the analog communication system are as follows:

The analog communication system is a communication system using analog signals, which is characterized by including:

Transmission continuity: The analog communication system uses continuous analog signals for transmission, which can be transmitted in the form of waves in the channel and has good transmission performance.

Weak anti-interference ability: analog signals are easily disturbed by noise during transmission, which will lead to signal quality degradation, such as distortion and distortion.

Utilization of low frequency band: Analog communication systems usually adopt frequency division multiplexing technology, that is, different signals are modulated to different frequencies and then transmitted. This method will occupy a wide frequency band and the frequency band utilization rate is low.

Poor confidentiality: the analog communication system transmits analog signals, which are easy to be eavesdropped and interfered, and the confidentiality is poor.

Easy to realize multi-channel communication: the analog communication system can realize multi-channel communication, that is, multiple signals can be transmitted simultaneously on a physical channel, which improves the communication efficiency.

Less engineering difficulty: the design and implementation of analog communication system is relatively simple, and the engineering difficulty is less, so it has been widely used in early communication.

Generally speaking, analog communication system has the characteristics of strong transmission continuity, weak anti-interference ability, low frequency band utilization rate, poor confidentiality, easy realization of multi-channel communication and low engineering difficulty. With the development of digital technology, modern communication system gradually turns to digital communication, and digital signals have higher anti-interference ability and frequency band utilization rate, and are more safe and reliable.