Vadym Slyusar (born 15 October 1964, vil. Kolotii, Reshetylivka Raion,

Poltava Poltava (, ; , ) is a city located on the Vorskla, Vorskla River in Central Ukraine, Central Ukraine. It serves as the administrative center of Poltava Oblast as well as Poltava Raion within the oblast. It also hosts the administration of Po ...

region,

Ukraine Ukraine is a country in Eastern Europe. It is the List of European countries by area, second-largest country in Europe after Russia, which Russia–Ukraine border, borders it to the east and northeast. Ukraine also borders Belarus to the nor ...

) is a Soviet and Ukrainian scientist,

Professor Professor (commonly abbreviated as Prof.) is an Academy, academic rank at university, universities and other tertiary education, post-secondary education and research institutions in most countries. Literally, ''professor'' derives from Latin ...

, Doctor of Technical Sciences, Honored Scientist and Technician of Ukraine, founder of

tensor In mathematics, a tensor is an algebraic object that describes a multilinear relationship between sets of algebraic objects associated with a vector space. Tensors may map between different objects such as vectors, scalars, and even other ...

-matrix theory of

digital antenna array Digital antenna array (DAA) is a smart antenna with multi channels digital beamforming, usually by using fast Fourier transform (FFT). The development and practical realization of digital antenna arrays theory started in 1962 under the guidanc ...

s (DAAs), N-OFDM and other theories in fields of

radar Radar is a system that uses radio waves to determine the distance ('' ranging''), direction ( azimuth and elevation angles), and radial velocity of objects relative to the site. It is a radiodetermination method used to detect and track ...

systems,

smart antenna Smart antennas (also known as adaptive array antennas, digital antenna arrays, multiple antennas and, recently, Multiple-input multiple-output communications, MIMO) are antenna arrays with smart signal processing algorithms used to identify spatial ...

s for

wireless communication Wireless communication (or just wireless, when the context allows) is the transfer of information (''telecommunication'') between two or more points without the use of an electrical conductor, optical fiber or other continuous guided med ...

s and digital beamforming.

Scientific results

N-OFDM theory

In 1992 Vadym Slyusar patented the 1st optimal

demodulation Demodulation is the process of extracting the original information-bearing signal from a carrier wave. A demodulator is an electronic circuit (or computer program in a software-defined radio) that is used to recover the information content fro ...

method for N-OFDM signals after

Fast Fourier transform A fast Fourier transform (FFT) is an algorithm that computes the discrete Fourier transform (DFT) of a sequence, or its inverse (IDFT). A Fourier transform converts a signal from its original domain (often time or space) to a representation in ...

(FFT).RU2054684 (C1) G01R 23/16. Amplitude-frequency response measurement technique// Slyusar V. – Appl. Number SU 19925055759, Priority Data: 19920722. – Official Publication Data: 1996-02-2

/ref> From this patent was started the history of N-OFDM signals theory. In this regard, W. Kozek and A. F. Molisch wrote in 1998 about N-OFDM signals with the sub-carrier spacing

\alpha < 1

, that "''it is not possible to recover the information from the received signal, even in the case of an ideal channel.''" But in 2001 Vadym Slyusar proposed such N-OFDM, Non-orthogonal frequency digital modulation (N-OFDM) as an alternative of

OFDM In telecommunications, orthogonal frequency-division multiplexing (OFDM) is a type of digital transmission used in digital modulation for encoding digital (binary) data on multiple carrier frequencies. OFDM has developed into a popular scheme for ...

for communications systems. The next publication of V. Slysuar about this method has priority in July 2002Slyusar, 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. (US

/ref> before the conference paper of I. Darwazeh and M.R.D. Rodrigues (September, 2003)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 regarding N-OFDM#Spectrally efficient FDM (SEFDM), 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.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. (US

/ref> The theory N-OFDM of V. Slyusar inspired numerous investigations in this area of other scientists.

Tensor-matrix theory of
digital antenna array Digital antenna array (DAA) is a smart antenna with multi channels digital beamforming, usually by using fast Fourier transform (FFT). The development and practical realization of digital antenna arrays theory started in 1962 under the guidanc ...

In 1996 V. Slyusar proposed the Khatri–Rao product#Column-wise Khatri–Rao product, column-wise Khatri–Rao product to estimate four coordinates of signals sources at a

. The alternative concept of the matrix product, which uses row-wise splitting of matrices with a given quantity of rows ( Face-splitting product), was proposed by V. Slyusar in 1996 as well. After these results the

-matrix theory of

s and new

matrix Matrix (: matrices or matrixes) or MATRIX may refer to: Science and mathematics * Matrix (mathematics), a rectangular array of numbers, symbols or expressions * Matrix (logic), part of a formula in prenex normal form * Matrix (biology), the m ...

operations was evolved (such as the Block Face-splitting product, Generalized Face-splitting product, Matrix

Derivative In mathematics, the derivative is a fundamental tool that quantifies the sensitivity to change of a function's output with respect to its input. The derivative of a function of a single variable at a chosen input value, when it exists, is t ...

of Face-splitting product etc.), which used also in artificial intelligence and machine learning systems to minimization of

convolution In mathematics (in particular, functional analysis), convolution is a operation (mathematics), mathematical operation on two function (mathematics), functions f and g that produces a third function f*g, as the integral of the product of the two ...

and tensor sketch operations,Thomas D. Ahle, Jakob Bæk Tejs Knudsen. Almost Optimal Tensor Sketch. //Mathematics, Computer Science, Published 3 September 2019. Page 9.
ArXiv
/ref> in a popular

Natural Language Processing Natural language processing (NLP) is a subfield of computer science and especially artificial intelligence. It is primarily concerned with providing computers with the ability to process data encoded in natural language and is thus closely related ...

models, and hypergraph models of similarity. The Face-splitting product and his properties used for multidimensional smoothing with P-splines and

Generalized linear array model In statistics, the generalized linear array model (GLAM) is used for analyzing data sets with array structures. It based on the generalized linear model with the design matrix written as a Kronecker product. Overview The generalized linear array ...

in the statistic in two- and multidimensional approximations of data as well.

Theory of odd-order I/Q demodulators

The theory of odd-order I/Q demodulators, which was proposed by V. Slyusar in 2014,Madodana 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 - 2

/ref> started from his investigations of the tandem scheme of two-stage

signal processing Signal processing is an electrical engineering subfield that focuses on analyzing, modifying and synthesizing ''signals'', such as audio signal processing, sound, image processing, images, Scalar potential, potential fields, Seismic tomograph ...

for the design of an I/Q demodulator and multistage I/Q demodulators concept in 2012. 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".

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.Slyusar, 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

/ref> He investigated electrical small antennas and new constructions of such antenna (radio), antennas, evolved the theory of

metamaterial A metamaterial (from the Greek word μετά ''meta'', meaning "beyond" or "after", and the Latin word ''materia'', meaning "matter" or "material") is a type of material engineered to have a property, typically rarely observed in naturally occu ...

s, proposed new ideas to implementation of

augmented reality Augmented reality (AR), also known as mixed reality (MR), is a technology that overlays real-time 3D computer graphics, 3D-rendered computer graphics onto a portion of the real world through a display, such as a handheld device or head-mounted ...

, and

artificial intelligence Artificial intelligence (AI) is the capability of computer, computational systems to perform tasks typically associated with human intelligence, such as learning, reasoning, problem-solving, perception, and decision-making. It is a field of re ...

combat vehicle A ground combat vehicle, also known as a land assault vehicle or simply a combat vehicle or an assault vehicle, is a land-based military vehicle intended to be used for combat operations. They differ from non-combat military vehicles such as M ...

s as well. V. Slyusar has 68

patent A patent is a type of intellectual property that gives its owner the legal right to exclude others from making, using, or selling an invention for a limited period of time in exchange for publishing an sufficiency of disclosure, enabling discl ...

s, and 850 publications in the areas of

s for

s and

Life data

1981–1985 – listener of Orenburg Air Defense high military school.Оренбургское Краснознамённое, под редакцией Б. В. Шляпкина. – М.: Воениздат, 1988, 230 с. In this time started the scientific carrier of V. Slyusar, which published a first scientific report in 1985. 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 Kyiv, also Kiev, is the capital and most populous List of cities in Ukraine, city of Ukraine. Located in the north-central part of the country, it straddles both sides of the Dnieper, Dnieper River. As of 1 January 2022, its population was 2, ...

). The significant stage of the recognition of Vadym Slyusar’s scientific results became the defense of the dissertation for a

doctoral degree A doctorate (from Latin ''doctor'', meaning "teacher") or doctoral degree is a postgraduate academic degree awarded by universities and some other educational institutions, derived from the ancient formalism '' licentia docendi'' ("licence to teach ...

(Techn. Sci.) in 2000.

– since 2005, Honored Scientist and Technician of Ukraine – 2008. Since 1996 – work at Central Scientific Research Institute of Armament and Military Equipment of the Armed Forces of Ukraine (

Military Rank Military ranks is a system of hierarchy, hierarchical relationships within armed forces, police, Intelligence agency, intelligence agencies, paramilitary groups, and other institutions organized along military organisation , military lines, such ...

Colonel Colonel ( ; abbreviated as Col., Col, or COL) is a senior military Officer (armed forces), officer rank used in many countries. It is also used in some police forces and paramilitary organizations. In the 17th, 18th, and 19th centuries, a colon ...

. Since 2003 – participates in

NATO The North Atlantic Treaty Organization (NATO ; , OTAN), also called the North Atlantic Alliance, is an intergovernmental organization, intergovernmental Transnationalism, transnational military alliance of 32 Member states of NATO, member s ...

cooperation as head of the national delegations, a person of contact, and national representative within experts groups of NATO Conference of National Armaments DirectorsSlyusar 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.«Науковці України – еліта держави». Том VI, 2020. – С. 216
/ref> and technical members of the Research Task Groups (RTG) of

Science and Technology Organisation (STO). Since 2009 – member of editorial board of Izvestiya Vysshikh Uchebnykh Zavedenii. Radioelektronika.

Selected awards

* Honored Scientist and Technician of Ukraine (2008) * Soviet and Ukraine military medals

Gallery

File:DAA slyusar.jpg, The technology demonstrator of 8-channels DAA, developed by V. Slyusar participation (

USSR The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...

1989 1989 was a turning point in political history with the "Revolutions of 1989" which ended communism in Eastern Bloc of Europe, starting in Poland and Hungary, with experiments in power-sharing coming to a head with the opening of the Berlin W ...

) File:DAA PCI.jpg, A digital part of 8-channels

, proposed V. Slyusar File:VEER1mm.jpg, 16-channels unit of ADCs and DSP with

CompactPCI CompactPCI is a computer bus interconnect for industrial computers, combining a Eurocard-type connector and PCI signaling and protocols. Boards are standardized to 3 U or 6U sizes, and are typically interconnected via a passive backplane. The ...

interface, proposed V. Slyusar File:DAA channels.jpg, Multichannel analogue receiver unit, patented V. Slyusar with co-authorsПатент 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 File:Face_splitting_product_of_matrices.jpg, Face-splitting Product of matrices File:Penetrating face product.jpg, The Penetrating face product of matrices proposed by V. Slyusar in 1999

Scientific results

N-OFDM theory

Tensor-matrix theory of
digital antenna array Digital antenna array (DAA) is a smart antenna with multi channels digital beamforming, usually by using fast Fourier transform (FFT). The development and practical realization of digital antenna arrays theory started in 1962 under the guidanc ...

Theory of odd-order I/Q demodulators

Results in the other fields of research

Life data

Selected awards

Gallery

See also

References

External links

Scientific results

N-OFDM theory

Tensor-matrix theory of digital antenna array Digital antenna array (DAA) is a smart antenna with multi channels digital beamforming, usually by using fast Fourier transform (FFT). The development and practical realization of digital antenna arrays theory started in 1962 under the guidanc ...

Theory of odd-order I/Q demodulators

Results in the other fields of research

Life data

Selected awards

Gallery

See also

References

External links

Tensor-matrix theory of
digital antenna array Digital antenna array (DAA) is a smart antenna with multi channels digital beamforming, usually by using fast Fourier transform (FFT). The development and practical realization of digital antenna arrays theory started in 1962 under the guidanc ...