In 1992 Vadym Slyusar patented the 1st optimal demodulation method for N-OFDM signals after Fast Fourier transform (FFT).[1]
From this patent was started the history of N-OFDM signals theory.[1] In this regard, W. Kozek and A. F. Molisch wrote in 1998 about N-OFDM signals with the sub-carrier spacing , that "it is not possible to recover the information from the received signal, even in the case of an ideal channel."[2] But in 2001 Vadym Slyusar proposed such Non-orthogonal frequency digital modulation (N-OFDM) as an alternative of OFDM for communications systems.[3]
The next publication of V. Slysuar about this method has priority in July 2002[4] before the conference paper of I. Darwazeh and M.R.D. Rodrigues (September, 2003)[5] regarding SEFDM.
The description of the method of optimal processing for N-OFDM signals without FFT of ADC samples was transferred to publication by V. Slyusar in October 2003.[6][7]
The theory N-OFDM of V. Slyusar inspired numerous investigations in this area of other scientists.[7]
The Face-splitting product and his properties used for multidimensional smoothing with P-splines[18] and Generalized linear array model in the statistic in two- and multidimensional approximations of data as well.[19]
Theory of odd-order I/Q demodulators
The theory of odd-order I/Q demodulators, which was proposed by V. Slyusar in 2014,[20][21][22] started from his investigations of the tandem scheme of two-stage signal processing for the design of an I/Q demodulator and multistage I/Q demodulators concept in 2012.[23]
As result, Slyusar "presents a new class of I/Q demodulators with odd order derived from the even order I/Q demodulator which is characterized by linear phase-frequency relation for wideband signals".[21][24]
Results in the other fields of research
V. Slyusar provided numerous theoretical works realized in several experimental radar stations with DAAs which were successfully tested.[25][26][27]
1981–1985 – listener of Orenburg Air Defense high military school.[28][29] In this time started the scientific carrier of V. Slyusar, which published a first scientific report in 1985.[30]
June 1992 – defended the dissertation for a candidate degree (Techn. Sci.) at the Council of Military Academy of Air Defense of the Land Forces (Kyiv). The significant stage of the recognition of Vadym Slyusar’s scientific results became the defense of the dissertation for a doctoral degree (Techn. Sci.) in 2000.
Professor – since 2005, Honored Scientist and Technician of Ukraine – 2008.
Since 2003 – participates in Ukraine-NATO cooperation as head of the national delegations, a person of contact, and national representative within experts groups of NATO Conference of National Armaments Directors[31][32] and technical members of the Research Task Groups (RTG) of NATO Science and Technology Organisation (STO).
^ abRU2054684 (C1) G01R 23/16. Amplitude-frequency response measurement technique// Slyusar V. – Appl. Number SU 19925055759, Priority Data: 19920722. – Official Publication Data: 1996-02-20 [1]
^W. Kozek and A. F. Molisch.“Nonorthogonal pulse shapes for multicarrier communications in doubly dispersive channels,” IEEE J. Sel. Areas Commun., vol. 16, no. 8, pp. 1579–1589, Oct. 1998.
^Pat. of Ukraine No. 47835 A. IPС8 H04J1/00, H04L5/00. Method of frequency-division multiplexing of narrow-band information channels// Sliusar Vadym Іvanovych, Smoliar Viktor Hryhorovych. – Appl. No. 2001106761, Priority Data 03.10.2001. – Official Publication Data 15.07.2002, Official Bulletin No. 7/2002
^Slyusar, V. I. Smolyar, V. G. Multifrequency operation of communication channels based on super-Rayleigh resolution of signals// Radio electronics and communications systems c/c of Izvestiia- Vysshie Uchebnye Zavedeniia. Radioelektronika. – 2003, volume 46; part 7, pages 22–27. – Allerton Press Inc. (USA)[2]
^M. R. D. Rodrigues and I. Darwazeh. A Spectrally Efficient Frequency Division Multiplexing Based Communications System.// InOWo'03, 8th International OFDM-Workshop, Proceedings, Hamburg, DE, September 24–25, 2003. - https://www.researchgate.net/publication/309373002
^Slyusar, V. I. Smolyar, V. G. The description of nonorthogonal frequency-discrete modulation of signals for narrow-band communication channels// Radioelectronics and communications systems c/c of Izvestiia Vysshie Uchebnye Zavedeniia. Radioelektronika. – 2004, volume 47; part 4, pages 40–44. – Allerton Press Inc. (USA)[3]
^ abMaystrenko, V.A.; Maystrenko, V.V. (2014). "The modified method of demodulation N-OFDM signals". 2014 12th International Conference on Actual Problems of Electronics Instrument Engineering (APEIE). pp. 372–376. doi:10.1109/apeie.2014.7040919. ISBN978-1-4799-6020-0. S2CID44028633.
^Thomas D. Ahle, Jakob Bæk Tejs Knudsen. Almost Optimal Tensor Sketch. //Mathematics, Computer Science, Published 3 September 2019. Page 9. - ArXiv
^Bryan Bischof. Higher order co-occurrence tensors for hypergraphs via face-splitting. Published 15 February 2020, Mathematics, Computer Science, ArXiv
^Eilers, Paul H.C.; Marx, Brian D. (2003). "Multivariate calibration with temperature interaction using two-dimensional penalized signal regression". Chemometrics and Intelligent Laboratory Systems. 66 (2): 159–174. doi:10.1016/S0169-7439(03)00029-7.
^Slyusar V.I. I/Q-Demodulation of the Odd Order.// 20th International Conference on Microwaves, Radar, and Wireless Communications (MIKON-2014) and 13th International Radar Symposium (IRS 2014). Conference Proceedings.– Gdansk, Poland, June 16–18, 2014.
^ abMadodana Mfana. Optimized Soft-Core Processor Architecture for Noise Jamming: Masters of Electrical & Electronic Engineering Dissertation. - The University of Johannesburg. - December 2019. - Pages 8 - 12, 22 - 23.[4]
^Slyusar V.І., Serduk P.E.A Two Channels I/Q-Demodulator.// 11th International Conference Modern Problems of Radio Engineering, Telecommunications and Computer Science (TCSET’2012). - 21–24 February 2012. - Lviv-Slavske, Ukraine. - P. 411.
^ abSlyusar, V.I. The way of correction of DAA receiving channels characteristics using the heterodyne signal// Proceedings of the III International Conference on Antenna Theory and Techniques, 8–11 September 1999, Sevastopol, page 244. [5]
^Slyusar V.I. Regarding the building of the system of systems of standards./Coordination problems of military-technical and defensive industrial policy in Ukraine. Weapons and military equipment development perspectives/ V International Scientific and Practical Conference. Abstracts of reports. - October 11–12, 2017. - Kyiv. - P. 38.
^Патент України на корисну модель № 39243. МПК (2006) G01S 13/00, G01S 7/00, H02K 15/00. Багатоканальний приймальний пристрій.// Слюсар В.І., Волощук І.В., Алесін А. М., Гриценко В. М., Бондаренко М. В., Малащук В. П., Шацман Л. Г., Нікітін М. М. – Заявка на видачу патенту України на корисну модель № u200813442 від 21.11.2008. – Патент опубліковано 10.02.2009, бюл. № 3