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DOI 10.34229/KCA2522-9664.24.4.14
UDC 621.391
V. Slyusar1, N. Bihun2


1 Central Scientific Research Institute of Armament and Military Equipment of the Armed Forces of Ukraine, Kyiv, Ukraine

 swadim@ukr.net

2 Central Scientific Research Institute of Armament and Military Equipment of the Armed Forces of Ukraine, Kyiv, Ukraine

 bigun0714@ukr.net

ENHANCING NOISE IMMUNITY IN OFDM COMMUNICATION
CHANNELS WITH TWO-STAGE STROBING AND I/Q DEMODULATION

Abstract. The article presents an innovative approach to increasing the number of digital samples in analog-to-digital systems using a strobing method in a “sliding-window” mode. Particular attention is paid to optimizing the in-phase/quadrature demodulation for signals with orthogonal frequency division multiplexing. The study analyzes the amplitude-frequency characteristics of the latest I/Q demodulators, demonstrating a reduction in the side lobes of the frequency response.

Keywords: amplitude-frequency characteristic, analog-digital converter, digital signal processing, digital signal quadrature filter (DSQF), I/Q demodulation.


full text

REFERENCES

  1. Volder J. The birth of CORDIC. The Journal of VLSI Signal Processing-Systems for Signal, Image, and Video Technology. 2000. Vol. 25, Iss. 2. P. 101–105. doi.org/10.1023/A:1008110704586.

  2. Duprat J., Muller J.-M. The CORDIC algorithm: new results for fast VLSI implementation. IEEE Transactions on Computers. 1993. Vol. 42, Iss. 2. P. 168–178. doi.org/10.1109/12.204786.

  3. Akhter N., Fatema K., Fersouse L., Khandaker F. Implementation of the trigonometric LMS algorithm using original CORDIC rotation. International Journal of Computer Networks & Communications. 2010. Vol. 2, N 4. P. 84–95. doi.org/10.5121/ijcnc.2010.2408.

  4. Hachaїchi Y., Lahbib Y. An efficient mathematically correct scalefree CORDIC. arXiv:1606.02468v1 [cs.NA] 8 June 2016. doi.org/10.48550/arXiv.1606.02468.

  5. Kim Y.-M. Error analysis of CORDIC processor with FPGA implementation. arXiv:2308.01025v1 [eess.SY] 2 Aug 2023. doi.org/10.48550/arXiv.2308.01025.

  6. Chadha A., Jyoti D., Bhatia M.G. Design and simulation of an 8-bit dedicated processor for calculating the sine and cosine of an angle using the CORDIC algorithm. arXiv:1111.1086v1 [cs.AR] 4 Nov 2011. https://doi.org/10.48550/arXiv.1111.1086"target=_blank> doi.org/10.48550/arXiv.1111.1086.

  7. Zhu J.F., Ding H.L., Li H.K., Han J.W., Dai X.W., Chen Z.C., Yang J.Y., Zhang W.Q. A low-delay reference tracking algorithm for microwave measurement and control. arXiv:2311.09414v1 [physics.acc-ph] 24 Oct 2023. doi.org/10.48550/arXiv.2311.09414.

  8. Andraka R. A survey of CORDIC algorithms for FPGA based computers. Proc. 1998 ACM/SIGDA Sixth International Symposium on Field Programmable Gate Arrays (22–25 February 1998, Monterey, California, USA). Monterey, 1998. P. 191–200. doi.org/10.1145/ 275107.275139.

  9. GitHub: Let’s build from here GitHub. URL: https://github.com/suyashmahar .

  10. Zhang G., Ai-khalili D., Inkol R., Saper R. Novel approach to the design of I/Q demodulation filters. Proc. IEEE Pacific Rim Conference on Communications Computers and Signal Processing (19–21 May 1993, Victoria, BC, Canada). Victoria, 1993. P. 72–76. doi.org/10.1109/PACRIM.1993.407217.

  11. Xue R., Xu Q., Chang K., Tam K. A new method of an IF I/Q demodulator for narrowband signals. Proc. 2005 IEEE International Symposium on Circuits and Systems (23–26 May 2005, Kobe, Japan. Kobe, 2005. Vol. 4. P. 3817–3820. doi.org/10.1109/ISCAS.2005.1465462.

  12. Patent SE 501604 Sweden: G11C27/02H03D1/22. № SE 9302627-6. Metod och anordning fr sampling av elektriska signaler. Published on 14.02.1995. URL: http://surl.li/sznvt .

  13. Eklund J., Arvidsson R. A multiple sampling, single A/D conversion technique for I/Q demodulation in CMOS. Journal of Solid-State Circuits. 1996. Vol. 31, N 12. P. 1987–1994. doi.org/10.1109/4.545822.

  14. O’Neil P., Ryan C., Weitzel C. Monolithic gallium arsenide I-Q demodulator. Proc. Microwave and Millimeter-Wave Monolithic Circuits (31 May – 01 June 1983, Dallas, TX, USA). Dallas, 1983. P. 14–18. doi.org/10.1109/MCS.1984.1113618.

  15. David K., Berndt H. 6G Vision and requirements: is there any need for beyond 5G? IEEE Vehicular Technology Magazine. 2018. Vol.13, N 3. P. 72–80. doi.org/10.1109/MVT.2018.2848498.

  16. Rappaport T.S., Xing Y., Kanhere O., Ju S., Madanayake A., Mandal S., Alkhateeb A., Trichopoulos G.C. Wireless communications and applications above 100 GHz: opportunities and challenges for 6G and beyond. IEEE Access. 2019. Vol. 7. P. 78729–78757. doi.org/10.1109/ACCESS.2019.2921522.

  17. Alsharif M., Albreem M., Solyman A., Kim S. Toward 6G communication networks: terahertz frequency challenges and open research issues. Computers, Materials and Continua. 2021. Vol. 66, N 3. P. 2831–2842. doi.org/10.32604/cmc.2021.013176.

  18. Slyusar V.Y., Smolyar V.G. Frequency compression of communication channels based on super-relay resolution of signals. News of higher educational institutions. Radio electronics.. 2003. Vol. 46, Iss. 7. P. 30–39. doi.org/10.20535/S0021347003070045.

  19. Ziomek C., Corredoura P. Digital I/Q demodulator. Proc. Particle Accelerator Conference (01–05 May 1995, Dallas, TX, USA). Dallas, 1995. Vol. 4. P. 2663–2665. doi.org/10.1109/PAC.1995.505652.

  20. Bernal D., Closas P., Fernїndez-Rubio J.A. Digital I&Q demodulation in array processing: theory and implementation. Proc. 2008 16th European Signal Processing Conference (25–29 August 2008, Lausanne, Switzerland). Lausanne, 2008. P. 1–5. URL: https://ieeexplore.ieee.org/document .

  21. Slyusar V., Bihun N. The method of increasing the immunity of data transmission in communication channels. Proc. 2022 IEEE 9th International Conference on Problems of Infocommunications, Science and Technology (PIC S&T) (10–12 October 2022, Kharkiv, Ukraine). Kharkiv, 2022. P. 301–305. doi.org/10.1109/PICST57299.2022.10238546.

  22. Slyusar V., Serdiuk P. Synthesis method of procedure for odd-order I/Q demodulation based on replacing multistage with equivalent single-stage demodulation schemes. Radioelectronics and Communications Systems. 2020. Vol. 63, N 5. P. 273–280. doi.org/10.3103/S0735272720050064.

  23. Slyusar V.I. Synthesis of algorithms for measuring the range of M sources with additional gating of ADC samples. News of higher educational institutions. Radioelectronics. 1996. Vol. 39, Iss. 5. P. 55–62. URL: https://www.slyusar.kiev.ua/IZV_VUZ_1996_5.pdf .

  24. Sliusar I., Voloshko S., Smolyar V., Slyusar V. Next generation optical access based on N-OFDM with decimation. Proc. 2016 Third International Scientific-Practical Conference Problems of Infocommunications Science and Technology (04–06 October 2016, Kharkiv, Ukraine). Kharkiv, 2016. P. 192–194. doi.org/10.1109/INFOCOMMST.2016.7905378.

  25. Slyusar V., Bihun N. Forming the response of two-channel demodulator. Proc. 2022 IEEE 2nd Ukrainian Microwave Week (UkrMW) (14–18 November 2022, Ukraine). P. 342–345. doi.org/10.1109/UkrMW58013.2022.10036993.

  26. Ankarali Z., Pekz B., Arslan H. Flexible radio access beyond 5G: a future projection on waveform, numerology, and frame design principles. IEEE Access. 2017. Vol. 5. P. 18295–18309. doi.org/10.1109/ACCESS.2017.2684783.

  27. Slyusar V. I/Q-demodulation of the odd order. Proc. 2015 International Conference on Antenna Theory and Techniques (ICATT) (21–24 April 2015, Kharkiv, Ukraine). Kharkiv, 2015. P. 1–3. doi.org/10.1109/ICATT.2015.7136812.

  28. Cai S., Li Y., Zhu H., Wu X., Su D. A novel electromagnetic compatibility evaluation method for receivers working under pulsed signal interference environment. Applied Sciences. 2021. Vol. 11, N 20. 9454. doi.org/10.3390/app11209454.

  29. Mfana M., Hasan A.N. Soft-core architecture for odd/even order sampling I/Q demodulator with dual-portblock memory considerations. [Preprint] Preprints.org. 2019. 2019090014. doi.org/10.20944/preprints201909.0014.v1.

  30. Mitra J., Nayak T.K. An FPGA-based phase measurement system. IEEE Trabsactions on Very Large Scale Integration (VLSI) Systems. 2018. Vol. 26, Iss. 1. P. 133–142. doi.org/10.1109/TVLSI.2017.2758807.




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