A MODULATION PARAMETERS OF NEW COMMUNICATION SYSTEMS

The work consists in describing the types of modulation and their parameters for the selection and construction of modern digital communication networks with multiple subscriber access to network resources and high-speed interconnection. The goal is to systematize communication systems and provide multiple access of network subscribers to resources and high-speed data exchange. Solution method. The article discusses the technologies and standards of modern communication systems in terms of the structure of the construction of receiving and transmitting devices from the conversion of an analog signal into a digital form to the flow of symbolic solutions from the output of the demodulator. The classification of types of wired/wireless communication, communication standards, types of modulation on an analog carrier is carried out. The features of the hardware implementation of receiving and transmitting devices, transmission speeds and operating conditions of communication channels were taken into account. The largest manufacturers of the element base and specialized digital signal processing chips are presented, on which the interfaces of the physical layer of most receiving and transmitting devices of communication systems are implemented. As a result of the analysis, a set of modulation types that are currently used in most communication channels was determined, as well as the main parameters of their operation.