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3rd IEEE KhPI Week on Advanced Technology, KhPI Week 2022

作者： Galkyn, Sergii Khriapkin, Oleksandr Kaliuzhnyi, Mykola Guo, Qiang National Technical University «kharkiv Polytechnic Institute» Department of Computer Science and Intellectual Property Kharkiv Ukraine Kharkiv National University of Radio Electronics Department of System Engineering Kharkov Ukraine Kharkiv National University of Radio Electronics Problem Research Laboratory Kharkiv Ukraine College of Information and Telecommunication Harbin Engineering University Harbin China

ISBN: (数字)9798350399202

ISBN: (纸本)9798350399202

a technique and software for modeling radar signals with a low probability of their unauthorized reception at the input of the monitoring tool receiver are presented. The technique is illustrated by the formation of a signal model based on the Costas sequence. The methodology and software are designed to develop methods and algorithms: detection, measurement of parameters, recognition of radio emissions of radio electronic equipment, recognition of radio electronic equipment © 2022 IEEE.

关键词： Radar

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Data Stream Online Clustering Based on Fuzzy Expectation-Maximization Approach

Data Stream Online Clustering Based on Fuzzy Expectation-Max...

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IEEE International Conference on Data Stream Mining & Processing (DSMP)

作者： Anastasiia O. Deineko Polina Ye. Zhernova Boris Gordon Oleksandr O. Zayika Iryna Pliss Nelya Pabyrivska Artificial Intelligence Department Kharkiv National University of Radio Electronics Kharkiv Ukraine System Engineering Department Kharkiv National University of Radio Electronics Kharkiv Ukraine Computer Systems Department Tallinn University of Technology Tallinn Estonia Control Systems Research Laboratory Kharkiv National University of Radio Electronics Kharkiv Ukraine Department of Mathematics Lviv Polytechnic National University Lviv Ukraine

ISBN: (纸本)9781538628751

In the paper the online fuzzy clustering recurrent procedure has been introduced that allows the forming of hyperellipsoidal clusters with an arbitrary orientation of the axes is proposed. Such clustering system is the generalization of a number of known algorithms, it is intended to solve tasks within the general problems of Data Stream Mining (DSM) and Dynamic Data Mining (DDM), when information is sequentially fed to processing in online mode.

关键词： Data mining Clustering algorithms Task analysis Linear programming Probabilistic logic Minimization Neural networks

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Self-Awareness for Autonomous systems

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PROCEEDINGS OF THE IEEE 2020年第7期108卷 971-975页

作者： Dutt, Nikil Regazzoni, Carlo S. Rinner, Bernhard Yao, Xin Nikil Dutt (Fellow IEEE) received the Ph.D. degree from the University of Illinois at Urbana–Champaign Champaign IL USA in 1989.""He is currently a Distinguished Professor of computer science (CS) cognitive sciences and electrical engineering and computer sciences (EECS) with the University of California at Irvine Irvine CA USA. He is a coauthor of seven books. His research interests include embedded systems electronic design automation (EDA) computer architecture distributed systems healthcare Internet of Things (IoT) and brain-inspired architectures and computing.""Dr. Dutt is a Fellow of ACM. He was a recipient of the IFIP Silver Core Award. He has received numerous best paper awards. He serves as the Steering Committee Chair of the IEEE/ACM Embedded Systems Week (ESWEEK). He is also on the steering organizing and program committees of several premier EDA and embedded system design conferences and workshops. He has served on the Editorial Boards for the IEEE Transactions on Very Large Scale Integration (VLSI) Systems and the ACM Transactions on Embedded Computing Systems and also previously served as the Editor-in-Chief (EiC) for the ACM Transactions on Design Automation of Electronic Systems. He served on the Advisory Boards of the IEEE Embedded Systems Letters the ACM Special Interest Group on Embedded Systems the ACM Special Interest Group on Design Automationt and the ACM Transactions on Embedded Computing Systems. Carlo S. Regazzoni (Senior Member IEEE) received the M.S. and Ph.D. degrees in electronic and telecommunications engineering from the University of Genoa Genoa Italy in 1987 and 1992 respectively.""He is currently a Full Professor of cognitive telecommunications systems with the Department of Electrical Electronics and Telecommunication Engineering and Naval Architecture (DITEN) University of Genoa and a Co-Ordinator of the Joint Doctorate on Interactive and Cognitive Environments (JDICE) international Ph.D. course started initially as EU Erasmus Mundus Project and

Autonomous systems are able to make decisions and potentially take actions without direct human intervention, which requires some knowledge about the system and its environment as well as goal-oriented reasoning. In computer systems, one can derive such behavior from the concept of a rational agent with autonomy (“control over its own actions”), reactivity (“react to events from the environment”), proactivity (“act on its own initiative”), and sociality (“interact with other agents”) as fundamental properties \n[1]\n. Autonomous systems will undoubtedly pervade into our everyday lives, and we will find them in a variety of domains and applications including robotics, transportation, health care, communications, and entertainment to name a few. \nThe articles in this month’s special issue cover concepts and fundamentals, architectures and techniques, and applications and case studies in the exciting area of self-awareness in autonomous systems.

关键词： Special issues and sections Autonomous systems Self-aware Robot sensing systems Computational modeling

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Selective and adaptive supersampling for real-time ray tracing 09

Selective and adaptive supersampling for real-time ray traci...

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HPG 2009: Conference on High-Performance Graphics 2009

作者： Jin, Bongjun Ihm, Insung Chang, Byungjoon Park, Chanmin Lee, Wonjong Jung, Seokyoon Department of Computer Science and Engineering Sogang University Korea Republic of System Architecture Laboratory Samsung Electronics Korea Republic of

ISBN: (纸本)9781605586038

While supersampling is an essential element for high quality rendering, high sampling rates, routinely employed in offline rendering, are still considered quite burdensome for real-time ray tracing. In this paper, we propose a selective and adaptive supersampling technique aimed at the development of a real-time ray tracer on today's many-core processors. For efficient utilization of very precious computing time, this technique explores both image-space and object-space attributes, which can be easily gathered during the ray tracing computation, minimizing rendering artifacts by cleverly distributing ray samples to rendering elements according to priorities that are selectively set by a user. Our implementation on the current GPU demonstrates that the presented algorithm makes high sampling rates as effective as 9 to 16 samples per pixel more affordable than before for real-time ray tracing. Copyright © 2009 by the Association for Computing Machinery, Inc.

关键词： Ray tracing

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Hardware-efficient auto-correlation for synchronization of MIMO-OFDM WLAN systems

Hardware-efficient auto-correlation for synchronization of M...

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International SoC Design Conference, ISOCC

作者： Jongmin Cho Youngmin Cho Mohammad Rakibul Islam Jinsang Kim Won-Kyung Cho Computer System Architecture & VLSI Laboratory Department of Electronics and Radio Engineering Kyung Hee University Yongin si Gyeonggi South Korea

ISBN: (纸本)9781424450343;9781424450350

This paper presents a hardware-efficient autocorrelation scheme for the synchronization of MIMO-OFDM based wireless local area network (WLAN) systems, such as IEEE 802.11n. Carrier frequency offset (CFO) estimation for the frequency synchronization requires high complexity autocorrelation operations of many training symbols. In order to reduce the hardware complexity of the MIMO-OFDM synchronization, we propose an efficient correlation scheme based on time-multiplexing technique and the use of reduced samples while preserving the performance. Compared to a conventional architecture, the proposed architecture requires only 27% logic gates and 22% power consumption with acceptable BER performance loss.

关键词： Autocorrelation Wireless LAN Frequency synchronization OFDM Hardware Very large scale integration MIMO Timing Frequency estimation Energy consumption

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Low-complexity carrier frequency offset estimation using novel range pointer method for OFDM-based WLAN systems

Low-complexity carrier frequency offset estimation using nov...

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IEEE International Symposium on Circuits and systems (ISCAS)

作者： Jongmin Cho Jinsang Kim Won-Kyung Cho Computer System Architecture & VLSI Laboratory Department of Electronics and Radio Engineering Kyung Hee University Yongin si Gyeonggi South Korea

ISBN: (纸本)9781424438273

In this paper, we propose a low-complexity carrier frequency offset (CFO) estimation algorithm for OFDM based wireless LAN, IEEE 802.11a. The complexity of the arctangent operation to calculate the argument of auto-correlation for CFO estimation is reduced by a novel range pointer method. The proposed algorithm estimates fine CFO value first and then based on the fine CFO value, simple criteria is used for the boundary decision of integer CFO estimation. The simulation results show that the performance of the proposed algorithm is slightly better than the conventional method while the computational complexity is reduced by 50%. Furthermore, the proposed method can be easily implemented for the low complex next generation MIMO-OFDM based WLAN systems.

关键词： Frequency estimation Wireless LAN OFDM Autocorrelation Frequency synchronization Table lookup Sociotechnical systems Very large scale integration Iterative algorithms Degradation

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architecture of timing synchronization for MIMO-OFDM WLAN systems

Architecture of timing synchronization for MIMO-OFDM WLAN sy...

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2008 4th IEEE International Conference on Circuits and systems for Communications, ICCSC

作者： Cho, Jongmin Huynh, Trong Anh Kim, Jinsang Cho, Won-Kyung Computer System Architecture and VLSI Design Laboratory Department of Electronics and Radio Engineering Kyung Hee University 1 Seocheon Kihung Yongin Kyungki 449-701 Korea Republic of

ISBN: (纸本)9781424417087

In this paper, we present a timing synchronization scheme of the next generation IEEE 802.11n wireless LAN standard which is based on MIMO-OFDM technique. The proposed timing synchronization method takes two steps which consist of two modified auto-correlators. For coarse timing synchronization, a sliding window differentiator is used after a conventional auto-correlation in order to avoid plateau problem. The conjugate symmetry property of L-LTS is used for fine timing synchronization. Since cross-correlation based methods are not required, the computational complexity and the number of multiplier can be reduced. In order to reduce the hardware complexity, we have used sign comparators (SC) instead of using multipliers. Based on simulation results, the proposed method outperforms a conventional method. The proposed scheme can be applied to IEEE 802.11n systems and can easily be expanded to frequency synchronization scheme. ©2008 IEEE.

关键词： Orthogonal frequency division multiplexing

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architecture of Timing Synchronization for MIMO-OFDM WLAN systems

Architecture of Timing Synchronization for MIMO-OFDM WLAN Sy...

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IEEE International Conference on Circuits and systems for Communications (ICCSC)

作者： Jongmin Cho Huynh Trong Anh Jinsang Kim Won-Kyung Cho Computer System Architecture & VLSI Design Laboratory Department of Electronics and Radio Engineering Kyung Hee University Yongin si Kyunggi South Korea

In this paper, we present a timing synchronization scheme of the next generation IEEE *** wireless LAN standard which is based on MIMO-OFDM technique. The proposed timing synchronization method takes two steps which consist of two modified auto-correlators. For coarse timing synchronization, a sliding window differentiator is used after a conventional auto-correlation in order to avoid plateau problem. The conjugate symmetry property of L-LTS is used for fine timing synchronization. Since cross-correlation based methods are not required, the computational complexity and the number of multiplier can be reduced. In order to reduce the hardware complexity, we have used sign comparators (SC) instead of using multipliers. Based on simulation results, the proposed method outperforms a conventional method. The proposed scheme can be applied to IEEE 802.1 In systems and can easily be expanded to frequency synchronization scheme.

关键词： Timing Wireless LAN Frequency synchronization OFDM Autocorrelation Hardware MIMO computer architecture Very large scale integration Laboratories

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Toward digital UWB radios: part I - frequency domain UWB receiver with 1 bit ADCs

Toward digital UWB radios: part I - frequency domain UWB rec...

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IEEE Conference on Ultra Wideband systems and Technologies

作者： Hyung-Jin Lee Dong Sam Ha Hyung-Soo Lee Department of Electrical and Computer Engineering VTVT (Virginia Tech VLSI for Telecommunications) Lab Blacksburg VA USA Department of Electrical and Computer Engineering VTVT (Virginia Tech VLSI for Telecommunications) Lab Blacksburg VA Radio and Broadcasting Laboratory Electronics and Telecommunications Research Institute Daejon Korea

ISBN: (纸本)0780383737

Our UWB receiver, based on the frequency domain approach, samples spectral components of the received signal at the pulse repetition rate, and it effectively increases the sampling rate through digital signal processing in the frequency domain (Lee, H.-J. et al., Proc. IEEE Conf. on Ultra Wideband systems and Technologies, p.86-90, 2003; Lee and Ha, D.S., Proc. IEEE Comp. Soc. Annual Symp. on vlsi, p.236-7, 2003). We investigate employment of 1 bit ADCs for our UWB receiver and propose to use the confidence levels of the individual line spectrum in the correlation operation. Our simulation results indicate that the performance of our receiver with 1 bit ADCs is degraded by only 3 dB at BER of 10/sup -1/ compared to ideal ADCs and is comparable with a conventional receiver that uses an analog correlator.

关键词： Frequency domain analysis Signal processing Signal sampling Digital signal processing Ultra wideband technology Very large scale integration Employment Degradation Bit error rate Correlators

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Toward digital UWB radios: part II - a system design to increase data throughput for a frequency domain UWB receiver

Toward digital UWB radios: part II - a system design to incr...

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IEEE Conference on Ultra Wideband systems and Technologies

作者： Hyung-Jin Lee Dong Sam Ha Hyung-Soo Lee VTVT (Virginia Tech VLSI for Telecommunications) Lab Department of Electrical and Computer Engineering Virginia Technology Blacksburg VA USA Electronics and Telecommunications Research Institute Radio and Broadcasting Laboratory Daejeon South Korea

ISBN: (纸本)0780383737

For pt.I see ibid., p.248-52. Our UWB receiver, which is based on the frequency domain approach, samples spectral components of the received signal at the pulse repetition rate, and processes the signal in the frequency domain (Lee, H.-J. et al., Proc. IEEE Conf. Ultra Wideband systems and Technologies, p.86-90, 2003). Our receiver effectively increases the sampling rate through signal processing. We investigate efficient synchronization and equalization schemes to mitigate intersymbol interference, which is critical for high data rate applications. The proposed schemes improve the performance over a conventional analog correlator type receiver by 1-4 dB.

关键词： Throughput Frequency domain analysis Signal processing Intersymbol interference Frequency synchronization Baseband Signal sampling Digital signal processing Fast Fourier transforms Hardware

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