A.V. Eliseev1, I.A. Istomina2, D.E. Rubailo3

1–3 FSUE «RNIIRS» (Rostov-on-Don, Russia)

1 eliseev_av65@mail.ru, 2 irina_24032011@mail.ru, 3 drubaylo112@mail.ru

The problem of evaluating the quality of digital channels of satellite communication systems (DCSCS) is considered. It is shown that two quality assessment strategies are used in practice: the first is an assessment of quality from the position of consumers of services and specialists in the provision of communication services in the market; the second is an assessment of quality from the position of specialists in technical operation. It is concluded that the first strategy does not allow to identify the degradation of DCSCS quality. It is suggested that it is advisable to use the second strategy. A reasonable choice of particular quality indicators was made: error probability, jitter and phase drift, slippage, signal transmission delay, reliability, relative transmission rate, energy reserve, error vector modulus. A quality assessment criterion is proposed that forms three possible outcomes: satisfactory quality, marginal quality, and unsatisfactory quality. A single integral indicator is proposed, formed on the basis of particular quality indicators and fuzzy logical inference. The structure of a fuzzy expert quality assessment system is considered. An illustrative example is given.

Eliseev A.V., Istomina I.A., Rubailo D.E. Methodology for evaluating the quality of a digital channel of a satellite communication system based on an integral indicator and a fuzzy logical conclusion. Achievements of modern radioelectronics. 2024. V. 78. № 7. P. 20–36. DOI: https://doi.org/10.18127/j20700784-202407-03 [in Russian]

1. Sputnikovy`e sistemy` svyazi i veshhaniya. Spravochno-analiticheskoe izdanie. M.: Radiotexnika. Vy`p. 1. 2020. 350 s.
2. Zaseczkij A.V., Ivanov A.B., Postnikov S.D., Sokolov I.V. Kontrol` kachestva v telekommunikaciyax i svyazi. Chast` II / Pod red. A.B. Ivanova. M.: Kompaniya SAJRUS SISTEMS. 2001. 334 s.
3. Metodika ocenki kachestva uslug podvizhnoj radiotelefonnoj svyazi. Utv. Minkomsvyaz`yu Rossii ot 04.12.2014. № NN-P19-21709.
4. Alekseev E.B. E`kspluatacionny`e normy` na pokazateli kachestva funkcionirovaniya kanalov i traktov peredachi cifrovy`x transportny`x setej. T-Comm – Telekommunikacii i transport. 2012. № 8. S. 6–9.
5. GOSTR 52594-2006. Magistral`ny`e kanaly` volokonno-opticheskix, radiorelejny`x i sputnikovy`x sistem peredachi cifrovy`x televizionny`x signalov. Osnovny`e parametry` i metody` izmerenij. M.: Standartinform. 2007. 45 s.
6. Eliseev A.V., Pogorelov V.A., Strocev A.A., Xutorcev V.V. Teoreticheskie osnovy` telekommunikacionny`x radiotexnicheskix sistem i ustrojstv. Uchebnik / Pod red. A.A. Kosogora. M.: FIZMATLIT. 2023. 448 s.
7. Rzaev R.R., Goyushov A.I. Intellektual`naya ocenka kachestva telekommunikacionny`x uslug. Informacionno-upravlyayushhie sistemy`. 2014. № 6. S. 57–67.
8. Dzhamalidinova M.E., Pishhin O.N. Ocenka kachestva sistem sotovoj svyazi na osnove nechetkogo vy`voda. Vestnik AGTU. 2017. № 3. S. 65–75.
9. Kuvajskova Yu.E., Alyoshina A.A. Texnicheskaya diagnostika ob``ektov s ispol`zovaniem metodov nechetkoj logiki. Radiotexnika. 2017. № 6. S. 32–34.
10. Davlyatova M.A. Nauchno-texnicheskie resheniya i sposoby` kontrolya kachestva uslug svyazi. Izvestiya Samarskogo nauchnogo centra Rossijskoj akademii nauk. T. 23. № 4. 2021. S. 35–44.
11. Sokolov D.P. Teoriya nechetkix mnozhestv kak osnova SLA v IP-setyax. T-Comm–Telekommunikacii i transport. 2009. № 4. S. 50–53.
12. Eroxin G.A., Mandel` V.I., Nestyorkin Yu.A., Strukov A.P. Metodika rascheta e`nergeticheskogo zapasa radiolinii «kosmicheskij apparat-stanciya». Raketno-kosmicheskoe priborostroenie i informacionny`e sistemy`. 2018. T. 5. Vy`p. 1. S. 65–74.
13. Jensen T.L., Larsen T. Robust computation of error vector magnitude for wireless standards. IEEE Trans. Commun. 2013. 61 (2). P. 648–657.
14. Akar E`. Kak izmerenie modulya vektora oshibki pomogaet optimizirovat` obshhie xarakteristiki sistemy`. E`lektronika. 2021. № 8. S. 142–148.
15. Dinges S.I., Ivanyushkin R.Yu., Kozy`rev V.B., Kukk K.I., Shaxgil`dyan V.V., Shumilin M.S. Radioperedayushhie ustrojstva / Pod red. R.Yu. Ivanyushkina. M.: Goryachaya liniya – Telekom. 2021. 1200 s.
16. Eliseev A.V. Identifikaciya modeli ob``ekta, zadannoj v vide nechetkogo uravneniya v otnosheniyax. Avtometriya. 2007. № 1. T 43. S. 65–75.
17. Eliseev A.V., Zemlyakova E.V., Kovalenko M.P., Yuxnov V.I. Ocenka kachestva cifrovogo kanala svyazi na osnove nechetkoj e`ks-pertnoj sistemy` / Trudy` Severo-Kavkazskogo filiala Moskovskogo texnicheskogo universiteta svyazi i informatiki. Rostov-na-Donu: PCz «Universitet» SKF MTUSI. 2021. S. 184–190.
18. Leonenkov A.V. Nechetkoe modelirovanie v srede MatLab i fuzzyTECH. SPb.: BXV-Peterburg. 2003. 736 s.