New methods of adaptive signal correction in aviation HF data transmission modem

Systems, networks and telecommunication devices


Maslakov M. L.

Russian institute for power radiobuilding, 11th Line of the VO, 66, Saint-Petersburg, 199048, Russia



The importance and need for HF data transmission lines is increasing greatly with expanding of the aviation industry and innovation of requirements for air traffic services and airspace control over the Arctic region and ocean areas. Currently, the increased requirements to bit error rate and data transmission rate can be considered in the following areas:

– design of adaptive filtering algorithms;

– design of adaptive correction methods and principles;

– design of the new signal structures.

Recently, the author is working on all these areas. The article presents the following methods developed by the author:

– application of guard intervals;

– method of adaptive correction with guard intervals compensation;

– new algorithm of adaptive correction with decision feedback;

– methods of adaptive correction with quasi-coherent, weight quasi-coherent and in-phase quasi-coherent summation of test signals;

– method of non-test adaptive correction;

– algorithm of non-test adaptive correction with decision feedback.

The results of bit error rate numerical modeling obtained according to the methods considered in this article and algorithms of the adaptive signal correction are shown.

The presented methods can be used both in newly designed and in existing aviation HF data modems. These methods allow reduce a bit error rate and the probability of the information packet loss, as well as increase the data rate (up to 30%) in definite cases.

Some of the methods considered were implemented in a serial modem layout and tested on a real HF channel. All methods developed by the author were patented in Russian Federation.


data-link “Ground-to-Board”, adaptation, signal correction, non-test adaptive correction, data transmission, decision feedback, bit error rate


  1. Samartsev N.S., Kolotilov E.D., Koshelev B.V. Trudy MAI, 2017, no. 93, available at:

  2. Fundamentals of HF Data Link. Overview, August 2015, available at:

  3. ARINC Characteristic 635-2. HF Data Link Protocol. Feb. 27, 1998, available at:

  4. Nikolaev B.I. Posledovatel’naya peredacha diskretnykh soobshchenii po nepreryvnym kanalam s pamyat’yu (Serial transmission of discrete messages over continuous channels with memory), Moscow, Radio i svyaz’, 1988, 264 p.

  5. Tikhonov A.N., Arsenin V.Ya. Metody resheniya nekorrektnykh zadach (Methods for solving ill-posed problems), Moscow, Nauka, 1986, 288 p.

  6. Dzhigan V.I. Adaptivnaya fil’tratsiya signalov: teoriya i algoritmy (Adaptive signals filtering: theory and algorithms), Moscow, Tekhnosfera, 2013, 528 p.

  7. Sayed A.H. Adaptive filters. – New Jersey: Hoboken: John Wiley & Sons, Inc., 2008. 786 p.

  8. Egorov V.V., Maslakov M.L. Tsifrovaya obrabotka signalov, 2014, no. 2, pp. 2 – 6.

  9. Maslakov M.L. Tsifrovaya obrabotka signalov, 2017, no. 2, pp. 13 – 18.

  10. Egorov V.V., Katanovich A.A., Lobov S.A., Maslakov M.L. et al. Patent RU 2573270 20.01.2016.

  11. Klovskii D.D.. Elektrosvyaz’, 1992, no. 3, pp. 3 – 6.

  12. Maslakov M.L., Egorov V.V. Materialy mezhdunarodnoi nauchno-prakticheskoi konferentsii XXXIX nedeli nauki, SPbGPU, Izd-vo Politekhnicheskogo universiteta, 2010, pp. 31 – 32.

  13. Egorov V.V., Katanovich A.A., Lobov S.A., Maslakov M.L. et al. Patent RU 147413, 10.11.2014.

  14. Maslakov M.L. 16-ya Mezhdunarodnaya konferentsiya “Tsifrovaya obrabotka signalov i ee primenenie – DSPA 2014”, Moscow, 26-28 marta 2014, pp. 220 – 223.

  15. Maslakov M.L. 17-ya Mezhdunarodnaya konferentsiya “Tsifrovaya obrabotka signalov i ee primenenie – DSPA 2015”, Moscow, 25-27 marta 2015, pp. 258 – 261.

  16. Maslakov M.L. X Vserossiiskaya konferentsiya “Radiolokatsiya i radiosvyaz’”, Moscow, 21-23 noyabrya 2016, pp. 267 – 271.

  17. Egorov V.V., Maslakov M.L., Mingalev A.N., Smal M.S., Timofeev A.E. Koncept, 2014, vol. 20, pp. 2831 – 2835.

  18. Egorov V.V., Maslakov M.L., Mingalev A.N. Elektrosvyaz’, 2011, no. 11, pp. 32 – 34.

  19. Egorov V.V., Zaichenko K.V., Maslakov M.L. Mikhailov V.F. Radiotekhnika, 2017, no. 5, pp. 10 – 13.

  20. Egorov V.V., Katanovich A.A., Lobov S.A., Maslakov M.L. et al. Patent RU 174155, 05.10.2017.

  21. Egorov V.V., Katanovich A.A., Lobov S.A., Maslakov M.L. et al. Patent RU № 166744, 10.12.2016.

  22. Maslakov M.L. XI Vserossiiskaya konferentsiya “Radiolokatsiya i radiosvyaz’”. Sbornik trudov, Moscow, 27-29 noyabrya 2017, IRE im. V.A. Kotel’nikova RAN. pp. 91 – 93.

  23. Maslakov M.L. Elektrosvyaz’, 2014, no. 7, pp. 40 – 43.

Download — informational site MAI

Copyright © 2000-2022 by MAI