UDC 621.396
ALGORITHM FOR MULTI-CRITERIA SELECTION OF MODULATION TYPE FOR ADAPTING RADIO COMMUNICATION SYSTEMS TO STRUCTURAL INTERFERENCE
A. A. Lisnichuk, Dr. Sc. (Tech.), full professor, Radio Control and Communication Department, RSREU, Ryazan, Russia;
orcid.org/0000-0001-6562-6942, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
P. S. Meshchaninov, Master's Student, Radio Control and Communication Department, RSREU, Ryazan, Russia; orcid.org/0009-0005-1295-7904, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Due to the intensive use of time resources by radio communication systems (RCS), structural interfer ence is becoming more common. In addition, it is necessary to transmit more data and increase the speed in 23 radio channel without loss of quality. Adaptive variation of modulation type allows you to change the radio signal depending on transmission conditions, providing the balance between interference resistance and spectral efficiency. However, as a rule, this method uses only one criterion, without taking into account other important characteristics of RCS such as signal peak factor. The aim of the work is to develop an algorithm for multi-criteria selection of modulation type to adapt RCS to the effect of structural interference. Multi criteria approach allows taking into account several quality criteria: resistance to AWGN and structural interference, energy efficiency of generated signal, as well as spectral efficiency. The use of the developed algorithm implements a gain in spectral efficiency of 1.5-2 times compared with static modulation RCS, and a gain in peak factor of 1.2–1.6 times compared with an adaptive system based on a variation in modulation type only in the class of QAM signals.
Key words: : adaptive modulation, noise immunity, structural interference, PAPR, multi-criteria ap proach.