Zhurnal Radioelektroniki - Journal of Radio Electronics. eISSN 1684-1719. 2022. №8
Contents

Full text in Russian (pdf)

DOI: https://doi.org/10.30898/1684-1719.2022.8.1

INVESTIGATION OF PROBABILISTIC CHARACTERISTICS OF

RECEIVING OFDM-SIGNAL STRUCTURES FOR MULTIPATH

PROPAGATION AND PRESENCE OF CONCENTRATED INTERFERENCE

SPECTRUM

L.E. Nazarov

Fryazino branch of the Kotelnikov Institute of Radioegineering and Electronics of RAS,

Vvedensky Sq. 1, Fryazino Moscow region, 141120, Russia

The paper was received May 31, 2022

Abstract. The results of noise immunity studies of signal structures based on signals with orthogonal frequency multiplexing (OFDM signals) for multipath propagation and in the presence of additive spectrum-focused interference (SFI) are presented. It has been shown that the algorithms for receiving these signal constructs are based on SFI compensation, the essence of which is non-linear processing of input implementations by limiting or switching off spectral components with weight processing of input implementations. Noise immunity analysis was carried out for a number of investigated signal structures with variation of their base using a low-density noise immunity code with a code rate of 1/2 and using a Kaiser weight window. It is shown that the most efficient is nonlinear processing with the mode of switching off the spectral components - the energy gain when applying the mode of switching off reaches 1.5 dB in relation to the mode of limitation. It is also shown that with respect to the channel with additive white Gaussian noise energy losses in the presence of SFI for signal structures with a base of 9 dB do not exceed 3.85 dB while the theoretical estimate of the required signal base for reliable information transmission on this channel exceeds 20 dB.

Key words: OFDM-signals, multipath propagation, spectrum-concentrated interference, noise compensation.

Financing: This study was supported by the Russian Foundation for Basic Research, project 20-07-00525.

Corresponding author: Nazarov Lev Evgenievich, levnaz2018@mail.ru.

References

1. Bakulin M.G., Kreindelin V.B., Shloma A.M., Shumov A.P. Technologia OFDM. [OFDM Technology]. Moscow, Telecom. 2016. 280 p. (In Russian)

2. Schulze H., Luders C. Theory and Application of OFDM and CDMA. Wideband Wireless Communications. A John Wiley & Sons Ltd. England. 2005. 421 p.

3. Liu H., Li G. OFDM-Based Broadband Wireless Networks. A John Wiley & Sons. New Jersey. 2005. 251 p.

4. Sklar B. Digital communications. Fundamentals and Applications. Second Edition. Prentice Hall. PTR. Upper Saddle River, New Jersey. 2001. 1100 p

5. Darsena D., Verde F. Successive NBI cancellation using soft decision for OFDM systems. IEEE Signal Processing Letters. 2008. №15. P.873-876.

6. Gomaa A., Al-Dhahir N. A Sparsity-Aware Approach for NBI Estimation in MIMO-OFDM. IEEE Transactions on Wireless Communications. 2011. V.10. №6. P.1854-1862.

7. Darsena D., Gelli G., Verde F. Perfect symbol recovery and NBI suppression in MIMO-OFDM systems. Electronics Letters. 2014. V.50. №3. P.225-227.

8. Altous H., Barhumi I., Al-Dhahir N. Narrow-band Interference Mitigation Using Compressive Sensing for AF-OFDM Systems. 12-th IEEE International Conference on Wireless and Mobile Computing, Networking and Communications (WIMOB 2016). October 17-19. New York – USA 2016.

9. Zudilin A.S., Nazarov L.E. Analysis of noise immunity for receiving signal constructs based on OFDM-signals that are resistant to the influence of interference concentrated on the spectrum. Zhurnal radioelectroniki [Journal of Radio Electronics]. 2017. №11. http://jre.cplire.ru/jre/nov17/4/text.pdf (in Russian)

10. Kravchenko V.F., Nazarov L.E., Pustovoit V.I. Efficiency Study of Kravchenko Weight Windows at Receiving Signal Structures Based on OFDM Signals in the presence of Spectrum-Concentrated Interference. Journal of Communications Technolodgy and Electronics. 2019. V.64. №10. P.1087-1094 https://doi.org/10.1134/S0033849419100073

11. Nazarov L.E., Zudilin A.S. Algorithms of non-linear noise immunity processing for receiving signal structures based on OFDM-signals. Zhurnal radioelectroniki [Journal of Radio Electronics]. 2020. №3. https://doi.org/10.30898/1684-1719.2020.3.2 (in Russian)

12. Nazarov L.E. Iterative algorithm for symbol-by-symbol reception of OFDM-signal structures in the presence of interference concentrated on the spectrum. Zhurnal radioelectroniki [Journal of Radio Electronics]. 2021. №12. https://doi.org/10.30898/1684-1719.2021.12.2 (in Russian)

13. Kravchenko V.F., Nazarov L.E., Pustovoit V.I. Noise-Immune Communication with Orthogonal Frequency Division Multiplexing Using Kravchenko Weight Function Processing. DOKLADY MATHEMATICS. 2020. V.102. №3. P.528-531. https://doi.org/10.1134/S1064562420060113

14. Kalinin V.I., Radchenko D.E., Cherepenin V.A. The error-performances of digital channels based on continue noise signals under spectral modulation. Radiotechnika [Radioengineering]. 2015. №8. P.84-94. (In Russian)

15. Nazarov L.E., Zudilin A.S. Efficiency of Kaiser and Kravchenko-Kaiser windows in receiving OFDM-based signal constructs resistant to spectrum-concentrated interference. Fizicheskie osnovi priborostroenia [PHYSICAL BASES OF INSTRUMENTATION]. 2018. V.7. №3(29). P. 26-36. (in Russian)

16. Batanov V.V., Nazarov L.E. Statistical models of transionospheric radio links with amplitude fading of signals. Elektromagnitnye volny i elektronnye sistemy [Electromagnetic Waves and Electronic Systems]. 2021. Т.26. №5. С.15-22. https://doi.org/10.18127/j15604128-202105-02 (in Russian)

17. Iakovlev O.I., Iakubov V.P., Uriadov V.P. Rasprostranenie radiovoln [Propagation of radio waves]. Moscow, LENAND. 2009. 496 p. (In Russian)

18. Crane R.K. Ionospheric Scintillation. Proceeding of IEEE. 1977. V.2. P.180-199.

19. Levin B.R. Teoreticheskie osnovi statisticheskoi radiotehniki. Kniga pervaia [Theoretical foundations of statistical radio engineering. Book first]. Moscow, Sov. radio. 1969. 752 p. (in Russian)

20. Nazarov L.E. Iterative algorithm for symbol-by-symbol reception of OFDM-signal structures in the presence of interference concentrated on the spectrum. Zhurnal radioelectroniki [Journal of Radio Electronics]. 2021. №12. https://doi.org/10.30898/1684-1719.2021.12.2 (in Russian)

21. Li J., Lin S., Abdel-Chaffar K., Ryan W.E., Costello D.J. Jr. LDPC Code Designs, Constructions, and Unification. Cambridge. University Press. United Kingdom. 2017. 248 p.

22. TM synchronization and channel coding – summary of concept and rationale. Information report CCSDS 130.1-G-3. Green Book. Information Report. Washington, DC, USA. 2020. P.130.

23. Borovkov A.A. Matematicheskaja statistica [Mathematical statistics]. Мoscow, Science Glavnaja redakcia fiziko-matematicheskoi literaturi. 1984. 472 p. (in Russian)

For citation:

Nazarov L.E. Investigation of probabilistic characteristics of receiving OFDM-signal structures for multipath propagation and presence of concentrated interference spectrum. Zhurnal radioehlektroniki [Journal of Radio Electronics] [online]. 2022. №8. https://doi.org/10.30898/1684-1719.2022.8.1 (In Russian)