S.A. Ermakov1, M.A. Evseev2

1,2 JSC «Concern «Sozvezdie» (Voronez, Russia)

The software-defined radio (SDR) architecture, based on analog-to-digital conversion and further digital processing of the received signal, is a key technological achievement that allows meeting the high requirements for new generations of radios. At the same time, the concept of SDR is rather broad and is usually used in a broad sense to indicate that a key feature of a radio facility is digital signal processing. To determine a specific method for constructing an SDR, it is necessary to conduct a detailed comparative analysis of SDR implementation technologies to identify the key advantages and disadvantages of typical implementations.

The goal of the work is to demonstrate the capabilities of the developed hardware platform for new generation radios with extreme characteristics of frequency selectivity and a minimum of compromises with advanced digital signal processing technologies, modern technological element base, as well as proprietary solutions.

Based on the comparison of alternative SDR design options, the choice was made in favor of the ideal radio ISR technology. The block diagram of the developed hardware platform is presented. It is shown that a radio made according to the architecture of an ideal programmable radio makes it possible to digitally correct the imperfection of the analog part of the radio path.

Based on the results of the research and development carried out, the following conclusions can be drawn.

The developed and built transceiver on a modern hardware platform made it possible to test theoretical studies and proprietary technologies in practice. The obtained parameters of the receiving and transmitting paths, the introduction of new types of signals turned out to be possible only through the use of the imported electronic component base as key components, while these components were relevant for 2017 - the beginning of the design. The lack of the possibility of purchasing flagship electronic components currently limits practical research in the field of both digital correction of imperfection of analog circuits, and in the verification of new promising signal-code structures. However, with the improvement of domestic technologies for the production of an electronic component base, the solutions laid down in the design of the presented hardware platform can be used in the construction of modern civil and dualuse communication facilities, which impose less stringent requirements on the characteristics of frequency selectivity and other key parameters. So, for example, at present, based on the groundwork presented in this work, the authors are designing basic equipment for a communication system of the DMR standard.

Ermakov S.A., Evseev M.A. Hardware platform for creating new generation radios. Radiotekhnika. 2022. V. 86. № 1. P. 73−80. DOI: https://doi.org/10.18127/j00338486-202201-12 (In Russian)

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