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English

최첨단 연구와 교육이 이루어지는 경희대학교 전자정보대학 전자공학과 홈페이지 입니다.

Laboratory

Media Laboratory

URL: http://medialab.khu.ac.kr

Director: Professor Doug Young Suh (suh@khu.ac.kr) with Professors Gwang Hoon Park and Kyuheon Kim (ghpark, kyuheonkim@khu.ac.kr@khu.ac.kr)

Research Overview

Future networks will serve various realtime multimedia services such as VOD (video on demand), AR, VR, and network games. Mobile networks are becoming more popular and richer in resources including cloud computing. We develop novel technologies to harmonize video codecs and network protocols for exploiting available resources in future networks. By-products of these efforts include outstanding applications and contributions to international standard organizations.

Ongoing Projects

  • OTT(Over-the-top) media service development for ATSC3.0 (Hansigancom)
  • Non-Reference Video Quality Assessment (Innowireless)

Artificial Intelligence Circuits and Systems Laboratory

URL: http://vlsi.khu.ac.kr

Director: Professor Jinsang Kim (jskim27@khu.ac.kr) Associate Professor Ik-Joon Chang (ichang@khu.ac.kr)

Research Overview

Our research focuses on VLSI and SoC (system-on-a-chip) designs, SoC design methodologies, reconfigurable digital system designs, low-power designs, and efficient arithmetic units designs. Students in our laboratory are divided into three sub-groups: nanoscale VLSI designs, communication research sub-group, and image & video research sub-group. For efficient SoC designs, usually system aspects are investigated in advance before implementing SoCs. Therefore, students who want to study at our laboratory are strongly recommended to have knowledge of both digital VLSI systems design and top-level applications such as OFDM, ECC, SDR, image, and video processing algorithms. Our laboratory has lots of research facilities including front-end and back-end EDA tools for SoC designs at Kyung Hee - IT SoC research institute. We developed nanoscale circuit elements, efficient arithmetic chips, an ECC chip, a low-power DCT chip, a low-power motion estimation chip, NTSC decoder chip, pattern recognition chip, wireless modem chip, 3D and multivie video chips. Such modules will be integrated into sub-components for mobile and image & video SoCs which we are key circuits for future IT devices.

Ongoing Projects

  • DFV (design-for-variability) - Aware Nanometer CMOS Circuit Design
  • SOI-Based CMOS Circuits Designs for Space and Military Applications
  • 3D Multiview Video Encoder Design
  • Reconfigurable Low-Power SoC design for MIMO OFDM Systems

Laser Photonics Laboratory

URL: http://web.khu.ac.kr/~omil/default.htm

Director: Professor Yong-Pyung Kim (ypkim@khu.ac.kr)

Research Overview

We are investigating the generation, controlling, and application technologies of coherent light for the next generation of the optical information era. Our ultimate objectives of the research include: 1) realization of generation technology of novel lasers; 2) realization of the controlling technology of ultrashort pulse, monochromatic, broadband, and stabilized lasers; 3) creation of the application technology of novel lasers for optical communication, bio, and medical fields.

Ongoing Projects

  • Development of solid-state dye laser system for medical application
  • Development of excimer lamp pumped by micro-discharge.
  • Theoretical study on light scattering and absorption in human tissues
  • Theoretical study on the generation of ultrashort pulse lasers
  • Development of optical coherent tomography system for medical

SoC Design and Computers Laboratory

URL: http://soclab.khu.ac.kr

Director: Professor Yun-Mo Chung (chung@khu.ac.kr)

Research Overview

Our research interests include SoC (System on a Chip) design and computer applications for internet and parallel processing. Especially, our research interests are focused on System-level SoC design with high level hardware description languages such as VHDL, Verilog-HDL, and C/C++. In addition, we study 32-bit ARM processor architecture, hardware modeling with FSM, embedded system, RTOS, reconfigurable system architectures, FPGA and SOPC design, and ubiquitous computing. As application fields, we consider wavelet transform, encryption algorithms, audio systems, and display systems.

Ongoing Projects

  • Design of serial speaker connection system for multi-channel audio systems
  • Development of serial light control system
  • Development of wireless speaker connection system
  • VHDL modeling with FSM
  • Spatial data mining

Optical Signal Processing Laboratory

URL: http://holo.khu.ac.kr

Director: Professor Woon-Sik Baek (wsbaek@khu.ac.kr)

Research Overview

Our research focuses on optical signal processing in various applications. We develop the diffuse optical tomography system which is a new modality to imaging in vivo (particularly breast cancer and brain tumor), non-invasively using near-infrared light source and detector arrays. The goal of the DOT system is imaging the function and metabolism in vivo with information of optical scattering and absorption of biological tissue predicted by forward solver. We also develop image reconstruction algorithm which is optimized for the DOT system. We develop the external cavity diode laser system for optical memory. We develop signal processing for the digital holographic data storage system. We develop computer generated holograms for information security.

Ongoing Projects

  • Development of diffuse optical tomography system for medical imaging in vivo.
  • Development of the regularizing optimization algorithm for image reconstruction.
  • Development of external cavity diode laser system for optical memory.

Fiber Optics Laboratory

URL: http://web.khu.ac.kr/~yhyh

Director: Professor Yun-Hae Yeh (yhyh@khu.ac.kr)

Research Overview

All the research efforts are focused on fiber optic sensors, fiberoptic telecommunication components and subsystems. In the telecommunications area, the tunable fiberoptic filter, which plays a key role in the DWDM technology, and subsystems for optical channel monitoring are the main focus. Fiber optic sensors, which are believed to be the ideal transducers for civil structural monitoring and military applications, are the other high priority research of our laboratory. Current projects in fiber optic sensors aim at the implementation of the sensor system for temperature, underwater acoustic signal, pressure, vibration, strain, and others in the multiplexed configurations. This research requires in-depth knowledge in fiber optics, electronic hardware design including ASICs and software for control programs.

Ongoing Projects

  • Optical channel monitoring
  • Acoustic sensor array for underwater acoustic signal measurement
  • White light interferometry

Image Communication Laboratory

URL: http://web.khu.ac.kr/~imgcom

Director: Professor Wonha Kim (wonha@khu.ac.kr)

Research Overview

Our laboratory develops: 1) human preceptual oriented video codec, 2) automatic systems using video signal, and 3) the methodology of integrating vision and touch sense. Our video codec will improve more than 20% in coding efficiency compared to the conventional codec. The developing automatic system will invent innovative human assistant equipment applicable to automobiles, video surveillance, etc. We also believe that the integration of vision and touch sensation will set a milestone for recoding and transmitting human sensations.
Our research has been in joint cooperation with and sponsored by government institutes, national laboratories and private companies such as Korea Research Foundation (KRF), Korea Electronics Technology Institute (KETI) and Hyundai Mobis. In addition, we maintain close research collaboration with Professor Truong Nguyen's group in the University of California-San Diego.

Ongoing Projects

  • Development of video visibility enhancement algorithms
  • Development of human perceptual oriented video coding
  • Development of meta data for describing integration of vision and touch sense
  • Development of motion analysis model in video sequence

Digital Communication Laboratory

URL: https://sites.google.com/khu.ac.kr/dclab

Director: Professor Yun Hee Kim (yheekim@khu.ac.kr)

Research Overview

Our laboratory focuses on wireless communication and intelligent data/energy energy processsing for various applications. Our current research areas include intelligent reflecting surfaces (IRS), multiple access schemes, and massive antennas for 5G/6G mobile communications, low power Internet of Things (IoTs), and unmanned-aerial vehicular (UAV) communications.

Ongoing Projects

  • BK21Four: Convergence engineering institute for emerging communication technology
  • Intelligent reflecting surface assisted massive IoT access for 6G
  • Wireless energy transfer and massive multiple access for ultra low power IoT devices

Integrated Circuits Interface Laboratory

URL: http://icil.khu.ac.kr

Director: Professor Sang Hoon Hong (메일@khu.ac.kr)

Research Overview

Our research primarily focuses on developing a novel bio-inspired integrated circuits that enable power efficiencies and processing performances that surpasses current circuit designs. In particular we are interested in processing visual information in a way that closely mimics the brain. Thus, we are currently approaching this interest in two fronts. First is the visual sensing itself. We are demonstrating spike based sensory output is useful for efficient processing. Second is the way in which we process the spikes. We are exploring the ways to process visual information by self-learning.

Ongoing Projects

  • Light field image sensor
  • Fly eye inspired motion sensing
  • Neural Processing

Media Laboratory III

URL: http://medialab.khu.ac.kr

Director: Professor Kyuheon Kim (kyuheonkim@khu.ac.kr)

Research Overview

Since infra-strucutre of communications has been widely addopted, and a new broadcasting standard has been launched over the world, Broadcating and Communication is getting converged for various applications. Also, mulimedia is developing centering on immersive media represented by VR/AR/MR, and the influence of immersive media is rapidly expanding because of the development of artificial intelligence technology. Our lab is now focusing on technologies that immersive media service such as Ultra-Wide Viewing (which provides extremely wider view than UHD) and 3D point cloud (which provides extremely comprehensive 3 dimensional experience including HD map for self-driving cars) contents through broadcasting and communication infrastructure, and how to create new value through the collaboration of immersive media and artificial intelligence technologies.

Ongoing Projects

  • Convergence Future Communication Innovation Talent Training Center (BK21)
  • Development of generation, distribution and consumption technologies of dynamic media based on UHD broadcasting contents (Goverment)
  • Development of Adaptive Viewer-centric Point cloud AR/VR (AVPA) Streaming Platform (Government)
  • Video Coding for Machine (Government)
  • Segment file Generator for ATSC 3.0 signal based MMTP Generator (Industry)

Wireless Technology Laboratory

URL: http://ant.khu.ac.kr

Director: Professor Bom-Son Lee (bomson@khu.ac.kr)

Research Overview

The research in the Wireless Technology Laboratory focuses on the development of various kinds of antenna, some microwave passive devices, theory of metamaterial and its applications, and wireless power transfer (WPT). Through our research, we try to create a new wireless world in which information and power are communicated intelligently meeting the dynamic needs of the 5th Generation and Internet of Things (IoT). Our laboratory established a center named “Intelligent wireless Power Center’ in 2016. The center is financially supported by the Korean government with an annual amount of about USD 800,000 for the graduate students and research developments.

Ongoing Projects

  • Development of Phased Array Antennas with Wide Scanning Capability
  • Wireless Power Transfer in Vehicles
  • Metamaterial Applications in Industries
  • WIntelligent Wireless Power in Near, Mid-Range, and Far Field
  • Combined Technologies using the Above

RFIC/MMIC Laboratory

URL: http://rfic.khu.ac.kr

Director: Professor Chang-Woo Kim (cwkim@khu.ac.kr)

Research Overview

Our research focuses on three categories of research:
1. Radio Frequency Integrated Circuit/Monolithic Microwave Integrated Circuit Design for Wireless Communication/Broadcasting/Power(Energy) Transfer Systems
2. Design and Modeling for Microwave/Millimeter-wave Semiconductor Devices
3. RF Measurement and Tested Development of Wireless Communication/Power Transfer(WPT) Modules.
By nature, the work is multi-disciplinary and brings together aspects of semiconductor device and IC design, RF circuit design, and communication/power transfer system design in order to design and develop:
1) optimal circuits that provide maximal performance with minimal complexity;
2) novel RFIC architectures and MMICs that will enable efficient realization of hardware intensive wireless communication systems;
3) high performance prototype modules in order to validate and quantify the performance of wireless systems under actual conditions.
Our research group is highly dynamic and consists of many graduate students active in the fields of microwave/millimeter-wave device/circuit and wireless communication/broadcasting/energy transfer circuit integration.

Ongoing Projects

  • Development of Radio Transceiver Modules for Ubiquitous Applications
  • Development of Multiband Reconfigurable Power Amplifier Modules
  • Development of RF Reader System for RFID Applications
  • Development of Multiple-band Transceiver ICs for WPT systems

Multimedia Transmission Laboratory

URL: http://mmt.kyunghee.ac.kr

Director: Professor Won Sohn (wsohn@khu.ac.kr)

Research Overview

Our research focuses on the study of transmission technologies in the area of digital broadcasting. The detailed technologies include source coding, channel coding, modulation, multiple access, through mobile, terrestrial, satellite, and cable media. The related services include digital broadcasting, T-commerce and multimedia communication. The converging technology of broadcasting and communication is also studied in the context of broadcasting.

Ongoing Projects

  • Channel Estimation for the improvement of Mobile Receiving Performance for OFDM systems
  • Joint Source/Channel Coding Using Hierarchical Video Coding in Satellite Broadcasting System
  • Converging Technology DTV with Mobile communications
  • DTV system with return channel (T-commerce)

Mobile Communications Laboratory

URL: https://sites.google.com/khu.ac.kr/mcl549

Director: Professor Een-Kee Hong (ekhong@khu.ac.kr)

Research Overview

The Mobile Communications Laboratory focuses on mobile communication systems such as 4G/5G/6G mobile communications. Our research covers network domains related to radio resource management from the physical layer of mobile communication systems. These include beam managements for massive MIMO, scheduling algorithms for efficient resource management, and operating methods for mobile communication network. We also continues to work on spectrum engineering for mobile communications.

Ongoing Projects

  • A Study on the AI-Based Network Performance Optimization Technology for Small Cell Clusters
  • Development of AI-Based Self Organizing Network (SON) Technology for 5G Small Cells
  • Research on Selective Wireless Power Transfer in LOS/NLOS Environments
  • A Study on Edge Computing and Network Slicing for 5G-Smart City Service

Telecommunications Laboratory

URL: http://ee.khu.ac.kr

Director: Professor Ju Bin Song (jsong@khu.ac.kr)

Research Overview

Our research at the Telecommunications Laboratory focuses on wireless communications and networks such as 6G wireless technology, optimal resource allocation, machine learning applications, cyber-physical systems and smart grids.

Ongoing Projects

  • Optimal resource allocation techniques for 6G wireless communication systems
  • Traffic forecast using machine learning techniques in 6G networks
  • Learning and estimation of power consumption in electric automotive vehicles
  • Cyber-physical communication networks
  • Smart grids

Multiservice Networking Laboratory

URL: http://web.khu.ac.kr/~jgkim

Director: Professor Jeong Geun Kim (jg_kim@khu.ac.kr)

Research Overview

Our laboratory has been actively involved in highly recognized research activities targeted at solving the cutting-edge networking problems. These include design and analysis of next-generation multiservice networks, integrated wired/wireless multimedia networks, and performance evaluation of communication systems. Our research efforts toward positioning ourselves as a key player in the networking area will continue.

Ongoing Projects

  • Performance enhancement for network systems using artificial intelligence
  • High-mobility wireless ad-hoc networks
  • Performance modeling and evaluation for communication networks

Advanced Wireless Communications Laboratory

URL: http://awclab.khu.ac.kr/

Director: Professor Kye-San Lee (kyesan@khu.ac.kr)

Research Overview

Mobile communication systems are required to be sufficiently flexible to support a variety of multimedia services such as video, image, picture and data services with high quality. The next generation mobile communication requires high data rate transmission with high frequency utilization efficiency based on orthogonal frequency division multiplexing (OFDM). Our Laboratory has done researched on 4th Generation systems, OFDMA using frequency hopping, MC_CDMA, MC-DS/COMA, MIMO system, Adaptive array antenna, Ad-hoc system.

Wireless Integrated System (WINS) Laboratory

URL: http://web.khu.ac.kr/~jwlee

Director: Professor Jong-Wook Lee (jwlee@khu.ac.kr)

Research Overview

Research interests of our laboratory include development of new mixed-signal circuit design for various sensors. Extensive effort is directed toward the development of RFID tag IC using CAD tools. In addition, Enhanced wireless power transfer technology using advanced metamaterials are also investigated. Ultimate goal of our work is realizing wireless single-on-chip (SoC) CAD/design methodologies integrating wireless communication and wireless power functionality.

Ongoing Projects

  • Analog, mixed-signal circuit design for various sensors.
  • Development of low power, smart RFID tag IC using CMOS technology for wireless sensor networks.
  • Enhanced wireless power transfer technology using advanced metamaterials.

Communications and Coding Theory Laboratory

Director: Professor Hyundong Shin (hshin@khu.ac.kr)

Research Overview

Our laboratory focuses on developing fundamental theories and algorithm designs for a broad range of problems involving information transmission and processing. Our current research interests include quantum information science, wireless communication, and machine intelligence.

Ongoing Projects

  • Convergence engineering institute for emerging communication technology (BK21 FOUR)
  • Wireless localization and B5G/6G communication
  • Quantum communication and computing

Applied Electromagnetics Laboratory

URL: http://ael.khu.ac.kr

Director: Assistant Professor Sanghoek Kim (sanghoek@khu.ac.kr)

Research Overview

Maxwell's equations are some of the most important findings in physics because of their incredible impact on today's technologies including wireless technology, imaging systems, integrated chip designs, radar technology, and more. Our research lab focuses on developing theoretical platforms to solve the Maxwell's equations in various media, and finding innovative applications of them.

Ongoing Projects

  • Wireless interface with bio-implanatable devices
  • Wireless Power Transfer
  • Wireless interface with flexible devices
  • Metasurface to manipulate the electromagnetic waves

Telecommunications Laboratory

URL: http://enr.khu.ac.kr/

Director: Professor Ju Bin Song (jsong@khu.ac.kr)

Research Overview

Telecommunications Laboratory focuses on wireless communications and networks including resource allocation, optimization, seamless access techniques, game theory for various areas such as cognitive radio, cognitive networking, cyber physical system, smart grid, Internet of things, device-to-device techniques, etc.

Ongoing Projects

  • Optimal resource allocation for communications and networks
  • Fronthaul & backhaul techniques for 5G wireless networks
  • Ultra-dense heterogeneous small cells for 5G wireless networks
  • Cognitive networking
  • Cyber physical systems
  • Smart grids
  • Optimal resource allocation for cognitive radio networks
  • Cognitive radio pilot channel
  • Secure communications & networks
  • Communication systems for connected cars

Optoelectronics & Nano Device Laboratory

URL: http://ondl.khu.ac.kr/

Director: Professor Jae Su Yu (jsyu@khu.ac.kr)

Research Overview

We study many kinds of electronic/optoelectronic and energy devices based on organic/inorganic semiconductors and nano/micro materials/structures via material synthesis and patterning process. The light-emitting diodes (LEDs), nano/micro phosphors for white LEDs, laser diodes, photodetectors, solar cells, antireflective nanostructures, etc. have been developed. Recently, our research is focused on piezo/tribo nanogenerators/energy harvesting devices as well as supercapacitors/batteries/energy storage devices/photo- and electro-catalysts. Additionally, SERS sensors/bio-sensors/bio-imaging/fingerprint detection and flexible electronc/optoelectronic devices are also studied.

Ongoing Projects

  • Development of integrated multifunctional sensor platform based on autonomous energy
  • Development of energy havesting and storage convergence devices
  • Development of flexible electronic and optoelectronic devices

Human-Robot Interaction Laboratory

URL: http://robot.khu.ac.kr/

Director: Professor Donghan Kim (donghani@khu.ac.kr)

Research Overview

In HRI Lab., we are actively working on the following research projects: 1) the position and force control of manipulators and the motion control of mobile robot. We are using conventional control techniques and also intelligent control algorithms such as PID, optimal, adaptive, fuzzy-neural network, genetic, and immune system algorithm; 2) the navigation and guidance system for robots and vehicles; 3) develop HRI techniques for service robots.

Ongoing Projects

  • Control system for mobile manipulator
  • Robot navigation
  • Human-Robot interaction

Nano Energy Device (NED) Laboratory

URL: http://ned.khu.ac.kr/

Director: Assistant Professor Daewon Kim (daewon@khu.ac.kr)

Research Overview

Importance of energy harvesting device rapidly increases according to the development of mobile electronics such as wearable or implantable devices. Among various types of energy harvesters, energy harvester to scavenge mechanical energy is expected to be drastically advanced. In particular, a triboelectric energy harvester draws a great deal of attention due to high efficiency, diversity of material, and low cost. We are focused on the development of the novel energy devices which can be self-powered, harvest ambient mechanical energy. Also, we are developing energy storage devices such as supercapacitors and batteries to store the energy that is generated from energy harvesters. Integrated energy conversion and storage devices developed by using novel nanofabrication techniques are successfully employed as power sources for electronic devices.

Ongoing Projects

  • Development of self-powered electronic devices
  • Development of triboelectric energy harvesting devices
  • Development of supercapacitor/batteries as energy storage devices
  • Development of integrated energy conversion and storage systems
  • Development of novel nanofabrication

Advanced Semiconductor Device & Integration Laboratory

URL: http://seansl.khu.ac.kr

Director: Assistant Professor Seunghyun Lee (seansl@khu.ac.kr)

Research Overview

The pertinent application of semiconductor technology is highly important in the industry of modern electronics. The necessity of transition in the existing computing technologies to the progressive structure for efficient hardware implementation of Machine & Deep Learning / Neuromorphic Computing algorithms; the demand on the new design and integration of micro-LED technology for future display (AR, VR) as well as its further complementary utilization for flexible electronics; the high need in synthesis of novel materials (including 2D nanomaterials) for various electronic and optoelectronic devices, all the specified research direction motivate our research group to introduce promising solutions and applications for each area. Our research can be considered as a culmination of efforts in various disciplines including mechanics, electronics, physics, materials science, circuits and artificial intelligence. Currently, we are focused on several projects, which include the fabrication and further application of 3D memory, memristor array for neuromorphic computing, high-definition micro-LED displays, radiation-hardened devices, and synthesis of novel materials.

Ongoing Projects

  • Design, modeling, and fabrication of emerging non-volatile memories
  • Hardware design and application of memristor devices in Neuromorphic Computing
  • Development of micro-LED displays and integration for flexible electronics
  • Applications of novel materials in electronics and optoelectronics
  • Synthesis of 2D materials for further utilization in electronic sensors

Energy and Photonics Engineering Group

URL: https://sites.google.com/view/epekhu

Director: Assistant Professor Eungkyu Lee (eleest@khu.ac.kr)

Research Overview

In nanotechnology, the light-matter interaction has received great research attention as the coherent wave nature of photons at the nanoscale enables the systematic engineering of optical properties in interfacial nanostructures. We can tune the light distribution to achieve extraordinary optical phenomena, such as optical trapping, surface plasmon, and meta-materials. In the meantime, the engineered photonic functions can lead to interesting synergetic effects when it is paired with systems utilizing the coupling between photons and other types of energy carriers (e.g., electron, phonon). For example, when it is coupled with the thermal system, it can significantly impact the realization of advanced opto-thermal applications (e.g., solar-thermal water treatment and radiative cooler) as well as functional bio-photonics (e.g., active drug-delivery, photothermal therapy, colloidal and molecular assembly). Also, optical devices like optical isolator, photovoltaics or light-emitting diodes can always leverage novel nanostructures to improve energy conversion efficiencies by enhancing photon absorption or emission rate. It thus becomes clear that nanophotonics plays a critical role in enabling novel functions of nanotechnology. Energy and Photonics Engineering (EPE) group will explore fundamentals of the light-matter interaction and energy science and bridging them with engineering innovation.

Ongoing Projects

  • Supercavitating nanoswimmer and applications
  • Light-matter interaction for bio-sensor applications, low-cost lithography, microfluidics
  • Interfacial engineering for thin-film electrical and optical devices

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