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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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The Journal of the Korea institute of electronic communication sciences
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Journal DOI :
The Korea Institute of Electronic Communication Science
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Volume & Issues
Volume 6, Issue 6 - Dec 2011
Volume 6, Issue 5 - Oct 2011
Volume 6, Issue 4 - Aug 2011
Volume 6, Issue 3 - Jun 2011
Volume 6, Issue 2 - Apr 2011
Volume 6, Issue 1 - Feb 2011
Selecting the target year
Antenna Design of Mobile Frequency bands for Vehicular Application
Lee, Seung-Jae ; Yoon, Joong-Han ; Lee, Jin-Woo ;
The Journal of the Korea institute of electronic communication sciences, volume 6, issue 3, 2011, Pages 337~341
This paper presents the design of a novel integrated mobile antenna for vehicles. The proposed antenna fabricated on a low cost easily available FR4 substrate, which effectively covers both dual band operation. The proposed mobile antenna is a modified G-type patch antenna that can operate in various frequency bands, GSM (880~960 MHz), AMPS (824~894MHz), DCS (1710~1880MHz), PCS (1850~1990MHz), UMTS (1920~2170). Experimental results indicate that the impedance bandwidth (VSWR 1:2.5) of the proposed mobile antenna agree that of the simulation results. It was validated that the configuration can meet the demands of Mobile frequency bands and effectively enhanced the impedance bandwidth to 36.46% for the lower band and 27.84% for the upper band. This paper also presents and discusses the 3D radiation patterns and gains according to the results of the experiment.
Wave Propagation characteristic from Composite structures
Yoon, Kwang-Yeol ;
The Journal of the Korea institute of electronic communication sciences, volume 6, issue 3, 2011, Pages 343~348
With the rapid and wide-spread use of mobile communications much attention has been focussed on propagation in the urban area crowed with buildings. It is often surrounded by hills, forests, and mountains. The importance of surface scattering interference between transmitters and receivers on the rough surfaces has been interested and investigated. Therefore, a prediction method is necessary to estimate the influence of rough surfaces on microwave radio propagation. Moreover, most of the mobile communications are performed based on the digital communication system rather than the analog one. In this case, we must pay more careful attention to the signal delay caused by the phase delay due to the multi-path propagation. In this paper we have analyzed numerically scattering of electromagnetic waves from Composite structures by using FVTD (Finite Volume Time Domain) method. We consider two different types of rough surfaces such as periodic and composite structures.
A Stereo Matching Algorithm using New Multiple Windows
Kim, Choong-Won ;
The Journal of the Korea institute of electronic communication sciences, volume 6, issue 3, 2011, Pages 349~354
In this paper we propose a simple efficient stereo matching algorithm to recover sharp object boundaries and to obtain dense disparity map using new multiple line shape windows. To this end, we consider left-right consistency and unique constraint. From the experimental results it is found that the proposed algorithm is very good for obtaining sharp and dense disparity maps for stereo image pairs.
A study on development of bipolar metal surface anodizing equipment using H-bridge
Yang, Keun-Ho ;
The Journal of the Korea institute of electronic communication sciences, volume 6, issue 3, 2011, Pages 355~362
In this paper, we developed the equipment to forming the insulation film which there are operated an electrolysis principles in particular solution. In the earlier, there are supplied the anode by unipolar voltage with pulse, in this paper, there are supplied the anode by bipolar voltage with pulse, alternately. And then, we examinate the system that there are developed the bipolar anodizing equipment using H-bridge. There are modulated pulse width for the variable current. In the results, we obtained the results of the uniform film surface that compared with the unipolar anodizing.
The Influence of Users' Perception of Digital Convergence Media upon Use Intention
Kim, In-Kyung ; Park, Won-Jun ;
The Journal of the Korea institute of electronic communication sciences, volume 6, issue 3, 2011, Pages 363~369
The purpose of this study was to examine the influence of users' perception of convergence media which were appeared with technological development upon the actual intention of use. Study findings show that when the perceived usefulness of convergence media was high, use intention was high as well. In addition, when the perceived ease of use was high, use intention was high as well. Use intention had significance influence upon the extent of actual use. This finding implies the fact that when use intention is higher, convergence media are more frequently used in reality. On the other hand, when innovation resistance is higher, the perceived ease of use, use intention and media intimacy are lower. In the end, due to innovation resistance, the use intention of media becomes lower and the use of convergence media is delayed.
Development of a Interactive Stereoscopic Image Display System using Invisible Interaction Surface Generation
Lee, Dong-Hoon ; Yang, Hwang-Kyu ;
The Journal of the Korea institute of electronic communication sciences, volume 6, issue 3, 2011, Pages 371~379
In this paper, we propose a development methodology of interactive stereoscopic image display system. In our case, we consider a multiple touch recognition technique as the interaction method. That's because we want to guarantee multiple user access and interaction to the content without any restriction. In this case, however, some restrictions are occurred on account of the distance between display and participants. For this reason, this paper propose an invisible interaction surfaces which are generated in the air. This surface is utilized as interaction medium instead of the display wall. We also present an effective way to generate and edit interactive stereoscopic images based on Game Engine.
A Study on the MS-WP Cryptographic Processor for Wireless Security Transmission Network among Nodes of Water-Processing Measurement-Control-Equipment
Lee, Seon-Keun ; Yu, Chool ; Park, Jong-Deok ;
The Journal of the Korea institute of electronic communication sciences, volume 6, issue 3, 2011, Pages 381~387
Measurement controller that acquire and control and observe data from scattering sensors is organic with central control room. Therefore, measurement controller is efficient wireless network than wire network. But, serious problem is happened in security from outside if use wireless network. Therefore, this paper proposed suitable MS-WP cryptographic system to measurement control wireless network to augment network efficiency of measure controller. Result that implement proposed MS-WP cryptographic system by chip level and achieve a simulation, confirmed that 130% processing rate increase and system efficiency are increased double than AES algorithm. Proposed MS-WP cryptographic system augments security and is considered is suitable to measurement controller because that low power is possible and the processing speed is fast.
A Fast Multiplier of Composite fields over finite fields
Kim, Yong-Tae ;
The Journal of the Korea institute of electronic communication sciences, volume 6, issue 3, 2011, Pages 389~395
Since Elliptic Curve Cryptosystems(ECCs) support the same security as RSA cryptosystem and ElGamal cryptosystem with 1/6 size key, ECCs are the most efficient to smart cards, cellular phone and small-size computers restricted by high memory capacity and power of process. In this paper, we explicitly explain methods for finite fields operations used in ECC, and then construct some composite fields over finite fields which are secure under Weil's decent attack and maximize the speed of operations. Lastly, we propose a fast multiplier over our composite fields.
A Study on Dual System for Fault Tolerance of PLC
Ko, Jae-Hong ;
The Journal of the Korea institute of electronic communication sciences, volume 6, issue 3, 2011, Pages 397~404
In this research, wish to suggest method to embody system that can accommodate defect of PLC and find actual propriety. Defect permission control system minimizes production damage because enables repair and checking without discontinuance and improve believability about whole system. Propose duplexing of system to embody this fault tolerant system. Therefore, composed control system that can permit defect or breakdown duplexings of various module proposing this system, and confirms to simulation and actuality kiln of defect permission control system through an application experiment, and compares for mean time between defect by estimate and defect special quality and system configuration of failure(failure) to improve believability of PLC control system together. In proposed system expression method and system mode and relation with operation mode, error discovery mode and switching tube of duplexing mode, and PLC's central processing unit of node study algorithm about master-standby conversion driving and continuous operation of 2 channels method that have 2 that is not one and deduced continuous operation method and result about defect permission in this algorithm and applies this result to actuality kiln control system and confirms continuous operation about PLC defect permission.
A study on Control System of the Heat Treating Furnace
Kim, Sang-Yong ; Park, Soo-Hong ;
The Journal of the Korea institute of electronic communication sciences, volume 6, issue 3, 2011, Pages 405~410
The heat treatment of the steel is very important part on the forging industry. It is also effect to price competitiveness. The burner control system of the heat treating furnace is related LNG gas saving and fixed manufactured goods rate. This study show the burner control performance of the heat treating furnace. The result developed the performance of the heat treating furnace and show energy saving.
The Analysis of the HIF Arc Model of the Distribution System and the Methodology of the Application of Direct Integration Method
Ko, Yun-Seok ;
The Journal of the Korea institute of electronic communication sciences, volume 6, issue 3, 2011, Pages 411~416
In distribution system, to enhance the reliability of a HIF (High Impedance Fault) determination, it is very important to obtain the HIF model which can represent accurately the HIF' characteristics. Accordingly, in this paper, the several HIF models which are based on the arc models are reviewed, and then the characteristics of the HIF models are compared from the reviewed results. Finally, a Methodology implementing the arc model is studied based on the direct integration method.
Development of a Technical Road Map for Future Research in Wind Power Generation using Grading Criteria as a Rubric for Research Focus
Park, Jong-Kyu ; Bae, Young-Chul ;
The Journal of the Korea institute of electronic communication sciences, volume 6, issue 3, 2011, Pages 417~423
Generally, in order to avoid overlap with previous research and to initiate the innovative research, researchers must analyze patent information before research can begin. In this paper, the development of grading criteria using current trends in the wind power generation will be performed by analyzing the following criteria: technology position of major countries, impact factor each countries, patent family size, patent portfolios analysis, patent applied analysis, and analysis of nationality for a patent. This patent information for the wind power generation is expected to be useful in deciding the direction of future research.
A MAC Protocol for LED visible light communications with beamforming
Kim, Sung-Man ;
The Journal of the Korea institute of electronic communication sciences, volume 6, issue 3, 2011, Pages 425~432
To increase the bit rate over than 1 Gb/s in LED visible light communications, we need to reduce the multipath effect of the light in indoor environment. In this paper, we propose a MAC protocol for LED visible light wireless LAN with beamforming technique. We assumed that spatial light modulator is used for beamforming function. We use polling method since detecting another uplink channel is difficult in visible light communication. We also estimated the performance of the proposed MAC protocol.
The Trend of WPS(WiFi Positioning System & Service)
Jeong, Seung-Hyuk ; Shin, Hyun-Shik ;
The Journal of the Korea institute of electronic communication sciences, volume 6, issue 3, 2011, Pages 433~438
The purpose of this paper is to define WiFi LDT(Location Determination Technology) and Service available for mobile wireless network. This paper introduces positioning technology such as Basic Technology Element and QoS(Quality of Service) etc. of WPS(WiFi Positioning System) for mobile wireless network. The LDT and wireless positioning technology in order to determine the position of terminal when mobile based positioning service is provided, and by providing service with postioning technology, it will not only provide convenience to the users or subscribers but also contribute to the activation of LBS(Location Based Services) industries.
A Study of Head Up Display System for Next Generation Vehicle
Yun, Sung-Ha ; Son, Hui-Bae ; Rhee, Young-Chul ;
The Journal of the Korea institute of electronic communication sciences, volume 6, issue 3, 2011, Pages 439~444
In this paper, we implemented the intelligent smart monitor system for next generation which is most commonly viewed information in a vehicle from the instrument cluster, where speed, tachometer, fuel, engine temperature, fuel gauge, turn indicators and warning lights and provide the driver with an array of informations. Designed Smart HUD(Head-Up-Display) monitor system is composed TFT LCD, LCD Back light led, plane mirror, lens and controllers parts and it was assembled to intelligent integrated smart monitor system. Finally, we analyze intelligent integrated smart monitor system for driver safety vehicles and present the possibility to apply to smart intelligent HUD total monitor system for next generation.
P2P System for Simultaneous Support of Menu and Social Network Joint Buying Information
Kim, Boon-Hee ;
The Journal of the Korea institute of electronic communication sciences, volume 6, issue 3, 2011, Pages 445~449
A P2P technique is the concept to share sources efficiently in distributed environment that is studying a lot. In these P2P systems, the server to support the contents-information have less overloads than the composed system as the server to have resources generally. In this paper, we suggest a P2P system to support conveniences for users that were connected with the information of joint-buying based on social network. The joint-buying information based on social network is supported by peers using a p2p system and these information to intermediate are supported by a P2P server.
A comparative study on housing policy of capital area and region
Kim, Jin ; Jeon, Kwang-Sub ;
The Journal of the Korea institute of electronic communication sciences, volume 6, issue 3, 2011, Pages 451~455
This study is a comprehensive analysis of housing policy for our country, that is divided into the capital area and several regions. Also discussed, are ways to establish more new housing policies, which are based on this government's housing policy.
IR LED Marker Detection Method for Production of Multiple Marker based on Augmented Reality
Lee, Hye-Mi ; Ryu, Nam-Hoon ; Kim, Eung-Kon ;
The Journal of the Korea institute of electronic communication sciences, volume 6, issue 3, 2011, Pages 457~463
As computer related technologies are developed, interests in augmented reality technologies are greatly increasing. Augmented reality is a technology that composes digital contents from the real input images through camera and it enables interaction with users. This study designed a directional marker using LED light that emits infrared ray, then, provided a detection algorithm and a marker information extraction method that can realize various virtual objects as augmented reality from one marker. The newly designed method provides a solution to settle the problems in existing marker technologies such as decrease of immersiveness and read rate and single information expression, and at the same time it can minimize the cost or time consumption in marker information storage.