COMPLEX METHODOLOGY OF BUILDING DMR ARCHITECTURE BASED ON SDR RADIO SYSTEM

Keywords: digital mobile radio communication, DMR architecture, SDR radio system, USRP platform, functional scheme, signal modulation, signal demodulation

Abstract

To date, the definition of the principles of the implementation of the open standard of digital mobile radio communication (DMR: Digital Mobile Radio) as a highly effective and simple approach to the organization of radio systems, which at the same time is characterized by low cost, is considered as an extremely urgent task of scientific research. Compared to such widespread universal standards as iDEN and TETRA, the architecture based on DMR is characterized by a multiple higher bandwidth of the information channel, backward compatibility, a wide toolkit for organizing a radio station based on modern components, as well as flexibility and scalability of the overall system by applying the method of time division of one physical radio communication channel (TDMA: Time Division Multiple Access). In this regard, for developing countries, the DMR standard remains the most relevant means of organizing radial-zone radio communication systems, on the basis of which the automatic distribution of communication channels between subscribers is carried out, which is considered as a stage of the global transition from analog to digital technologies.

The purpose of the study is to build a structural diagram of the architecture of a radio communication system with a DMR architecture based on the USRP, which is regulated at the level of interaction between individual modules, respectively, performing modulation-demodulation operations, digital low-frequency filtering, and symbol synchronization. Within the framework of the study, an assessment of the effectiveness of modeling and the performance of the implementation of the DMR architecture on the correspondingly given model should also be given.

The analysis of the basic approaches to the organization of the architecture of the modern radio system based on the standard of mobile radio communication DMR was carried out. The basic model of an architecturally organized set of network protocols of radio communication systems based on the DMR service is presented. A warehouse has been installed, on the basis of which it would be possible to create the model of the organization scheme of the SDR system used for radio communication based on the USRP platform. In accordance with the basic model, an analysis of the radio signal processing procedure was carried out through the construction of a functioning scheme of the organizational complex for the radio communication. Proposals can be used for the organization, scaling and optimization of the DPR architecture in accordance with the target indicators.

Published
2022-09-30
How to Cite
Возіяну, В. (2022). COMPLEX METHODOLOGY OF BUILDING DMR ARCHITECTURE BASED ON SDR RADIO SYSTEM. Scientific Notes of Lviv University of Business and Law, 34, 186-193. Retrieved from https://nzlubp.org.ua/index.php/journal/article/view/626
Section
Articles