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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Institute of Electronics and Information Engineers
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The Institute of Electronics Engineers of Korea
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Volume & Issues
Volume 52, Issue 12 - Dec 2015
Volume 52, Issue 11 - Nov 2015
Volume 52, Issue 10 - Oct 2015
Volume 52, Issue 9 - Sep 2015
Volume 52, Issue 8 - Aug 2015
Volume 52, Issue 7 - Jul 2015
Volume 52, Issue 6 - Jun 2015
Volume 52, Issue 5 - May 2015
Volume 52, Issue 4 - Apr 2015
Volume 52, Issue 3 - Mar 2015
Volume 52, Issue 2 - Feb 2015
Volume 52, Issue 1 - Jan 2015
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Design and Fabrication of the 1-Channel Monopulse Receiver
Kwon, Hyuk-Ja ; Lee, Young-Jin ; Kang, Byoung-Wook ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 12, 2015, Pages 3~9
DOI : 10.5573/ieie.2015.52.12.003
In this paper, we propose the operation procedures of the 1-channel monopulse receiver which achieves the new configuration. Also, we analyzed the monopulse ratio and the target angle accuracy of the fabricated receiver by using the monopulse signal generator developed for verifying the proposal equipment. As a result, it is apparent that the monopulse ratio of the proposal receiver is equal to that of the 3-channel monopulse receiver. Also, the fabricated receiver exhibits the target angle accuracy with fewer than 0.1 RMS. The proposal receiver achieves the simple receiver configuration and the simple tracking procedures, as contrasted with the 3-channel monopulse receiver. Also, the proposal receiver has advantages in terms of size, weight, cost and power. Because the proposal monopulse receiver requires 1-channel receiver and needs not the signal processor in comparison with 3-channel monopulse receiver which requires 3-channel receiver and need the signal processor.
Soft Decision based Advanced Receiver to Suppress and Cancel the Interference in D2D Communication Underlaying Cellular Network
Moon, Sangmi ; Chu, Myeonghun ; Kim, Hanjong ; Kim, Daejin ; Kim, Cheolsung ; Hwang, Intae ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 12, 2015, Pages 10~21
DOI : 10.5573/ieie.2015.52.12.010
Cellular Network assisted device-to-device (D2D) communication has been growing to reduce the overload of eNodeB and mitigate the frequency shortage. However, by sharing the uplink frequency resource with the cellular network, the interference between cellular and D2D is increased. In this paper, we propose the advanced receiver based on soft decision to reduce the interference between cellular and D2D. The proposed receiver can suppress and cancel the interference by calculating the unbiased estimation value of interference signal using minimum mean square error (MMSE) or interference rejection combing (IRC) receiver. The interference signal is updated using soft information expressed by log-likelihood ratio (LLR). We perform a system level simulation based on the 20-MHz bandwidth of the 3GPP LTE-A system. Simulation results show that the proposed receiver can improve SINR, throughput and spectral efficiency compared to conventional receivers.
DFT-based Channel Estimation Scheme for Sidelink in D2D Communication
Moon, Sangmi ; Chu, Myeonghun ; Kim, Hanjong ; Kim, Daejin ; Kim, Cheolsung ; Hwang, Intae ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 12, 2015, Pages 22~31
DOI : 10.5573/ieie.2015.52.12.022
Recently, 3rd Generation Partnership Project (3GPP) has developed device-to-device (D2D) communication to cope with the explosively increasing mobile data traffic. The D2D communication uses sidelink based on single carrier-frequency division multiple access (SC-FMDA) due to its low peak-to-average power ratio (PAPR). In addition, demodulation reference signal (DMRS) is designed to support multiple input multiple output (MIMO). In this paper, we propose the DFT-based channel estimation scheme for sidelink in D2D communication. The proposed scheme uses the 2-Dimensional Minimum Mean Square Error (2-D MMSE) interpolation scheme for the user moving at a high speed. We perform the system level simulation based on 20MHz bandwidth of 3GPP LTE-Advanced system. Simulation results show that the proposed channel estimation scheme can improve signal-to-interference-plus-noise ratio (SINR), throughput and spectral efficiency of conventional scheme.
Closed-Loop Power Control for Code Division Multiple Access in Time-Varying Underwater Acoustic Channel
Seo, Bo-Min ; Cho, Ho-Shin ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 12, 2015, Pages 32~40
DOI : 10.5573/ieie.2015.52.12.032
Code division multiple access (CDMA) is one of the promising medium access control scheme for underwater acoustic sensor networks due to its beneficial features such as robustness against frequency-selective fading and high frequency-reuse efficiency. In this paper, we design a closed-loop power control scheme for the underwater CDMA, to adapt time-varying acoustic channel. In the proposed scheme, sink node sends to sensor nodes the associated path loss which is acquired by uplink-channel analysis based on received packets from the sensor nodes. Then, sensor nodes adjust their transmission power in an adaptive manner to time-varying underwater acoustic channel, according to the informations sent by the sink node.
Design of The Dual-band Resonator for Magnetic Resonance Wireless Power Transfer
Yoon, Nanae ; Seo, Chulhun ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 12, 2015, Pages 41~45
DOI : 10.5573/ieie.2015.52.12.041
In this paper, the single port dual-band resonator for magnetic resonance wireless power transfer is proposed. The proposed dual-band resonator is consists of 20 turns spiral coil, a single loop, matching circuit, lumped elements, and a single port. The two sides of the matching circuit are connected to via holes. The spiral coil is operated at MF-band and single loop is operated at HF-band, respectively. We use two of the same structure resonators and simulated and the power transfer efficiency was calculated. The efficiency of simulation and measurement is above 60% at the MF and HF bands, and the distance is 100 mm.
Analysis of Various Window Effect for SAR image Recovery
Kim, Hyunguk ; Koh, Jinhwan ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 12, 2015, Pages 46~54
DOI : 10.5573/ieie.2015.52.12.046
SAR is a Radar to obtain the video information using a radio wave. Platform emit the radio wave, depending backscattered waves returned from the target object the signal to the distance, to create a topographical map is recorded in two-dimensional image. In this paper, through a simulation to apply a variety of window in the SAR image processing for SAR image recovery is to study the application effect of the window, as a result, at the side of the signal of the SNR, Flattop window to improve the best performance it was confirmed to show.
Performance Analysis on The Reactive Repeater Jamming Techniques Against an RCIED Using Mobile Devices
Kim, Yo-Han ; Kim, Dong-Gyu ; Kim, Hyoung-Nam ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 12, 2015, Pages 55~63
DOI : 10.5573/ieie.2015.52.12.055
Recently, terroristic threats using a radio controlled improvised explosive device (RCIED) that is remotely controlled and exploded have been increased around the world. In order to prevent the explosion of an RCIED, jamming techniques that interrupt an RCIED receiver can be used, so that the receiver can not demodulate the trigger code. Conventional jamming technique is a type of active barrage jamming that always emits the noise jamming signal for all the frequency band. However, it needs large power consumption and thus is limited in operation time for a vehicle. In order to overcome the shortage of the active barrage jamming, reactive jamming technique has drawn attention. In reactive jamming, all the frequency band is firstly scanned, and then if any trigger signal exists, one emits the jamming signal to the corresponding frequency band. Therefore, the reactive jamming is superior to the active barrage jamming in terms of power efficiency. However, a reactive jammer emits a jamming signal only after the trigger signal is intercepted, which means that the jamming signal may be late for interrupting an RCIED receiver. In this sense, it is needed to evaluate a delay in an RCIED receiver. To achieve this, we analyze the reaction time and present the simulation result for jamming performance of reactive jamming against an RCIED using mobile devices.
A CMOS IR-UWB RFIC for Location Based Systems
Lee, Jung Moo ; Park, Myung Chul ; Eo, Yun Seong ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 12, 2015, Pages 67~73
DOI : 10.5573/ieie.2015.52.12.067
This paper presents a fully integrated 3 - 5 GHz IR-UWB(impulse radio ultra-wide band) RFIC for Location based system. The receiver architecture adopts the energy detection method and for high speed sampling, the equivalent time sampling technique using the integrated DLL(delay locked loop) and 4 bit ADC. The digitally synthesized UWB impulse generator with low power consumption is also designed. The designed IR-UWB RFIC is implemented on
CMOS technology. The receiver's sensitivity is -85.7 dBm and the current consumption of receiver and transmitter is 32 mA and 25.5 mA respectively at 1.8 V supply.
Valve Modeling and Model Extraction on 3D Point Cloud data
Oh, Ki Won ; Choi, Kang Sun ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 12, 2015, Pages 77~86
DOI : 10.5573/ieie.2015.52.12.077
It is difficult to extract small valve automatically in noisy 3D point cloud obtained from LIDAR because small object is affected by noise considerably. In this paper, we assume that the valve is a complex model consisting of torus, cylinder and plane represents handle, rib and center plane to extract a pose of the valve. And to extract the pose, we received additional input: center of the valve. We generated histogram of distance between the center and each points of point cloud, and obtain pose of valve by extracting parameters of handle, rib and center plane. Finally, the valve is reconstructed.
Robust and Non-fragile H
Controller Design Algorithm for Time-delayed System with Randomly Occurring Uncertainties and Disturbances )
Yang, Seung Hyeop ; Paik, Seung Hyun ; Lee, Jun Yeong ; Park, Hong Bae ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 12, 2015, Pages 89~98
DOI : 10.5573/ieie.2015.52.12.089
This paper provides a robust and non-fragile
controller design algorithm for time-delayed systems with randomly occurring polytopic uncertainties and disturbances. First, we design time-delayed system considering randomly occurring uncertainties and disturbances. Next, The sufficient condition for the existence of robust and non-fragile
controller is presented by LMI(linear matrix inequality) using Lyapunov stability analysis and
performance measure. Since the obtained condition can be expressed as a PLMI(parameterized linear matrix inequality) by changes of variables and Schur complement, all solutions including controller gain, degrees of controller satisfying non-fragility,
can be calculated simultaneously. Finally, numerical examples are given to illustrate the performance and the effectiveness of the proposed robust and non-fragile
controller compared with the deterministic uncertainty model even though there exists randomly occurring uncertainties, disturbances and time delays.
Automatic On-Chip Glitch-Free Backup Clock Changing Method for MCU Clock Failure Protection in Unsafe I/O Pin Noisy Environment
An, Joonghyun ; Youn, Jiae ; Cho, Jeonghun ; Park, Daejin ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 12, 2015, Pages 99~108
DOI : 10.5573/ieie.2015.52.12.099
The embedded microcontroller which is operated by the logic gates synchronized on the clock pulse, is gradually used as main controller of mission-critical systems. Severe electrical situations such as high voltage/frequency surge may cause malfunctioning of the clock source. The tolerant system operation is required against the various external electric noise and means the robust design technique is becoming more important issue in system clock failure problems. In this paper, we propose on-chip backup clock change architecture for the automatic clock failure detection. For the this, we adopt the edge detector, noise canceller logic and glitch-free clock changer circuit. The implemented edge detector unit detects the abnormal low-frequency of the clock source and the delay chain circuit of the clock pulse by the noise canceller can cancel out the glitch clock. The externally invalid clock source by detecting the emergency status will be switched to back-up clock source by glitch-free clock changer circuit. The proposed circuits are evaluated by Verilog simulation and the fabricated IC is validated by using test equipment electrical field radiation noise
An Implementation of Efficient Error-reducing Method Using DSP for LED I-V Source and Measurement System
Park, Chang Hee ; Cho, Sung Ho ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 12, 2015, Pages 109~117
DOI : 10.5573/ieie.2015.52.12.109
In this paper, we proposed error-reducing method to source or measure a current or voltage for LED in the I-V characteristic analysis system using a digital signal processor (DSP). this method has the advantage of reducing a non-linear circuit error and random error. random error can be reduced using recursive averaging technique and non-linear circuit error can be reduced using 2rd polynomial regression calibration parameters fitting with measured sample data. it corrects measured error of IR, VR, VF1, VF2, VF3 of LED using calibration parameters. experimental results show that can be performed with about 0.017~0.043% accuracy.
A Study on The Dynamical Property of Input/output of Motion System for Machinery Control
Hyun, Sunghoon ; Kim, Dongyon ; Park, Janghwan ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 12, 2015, Pages 118~123
DOI : 10.5573/ieie.2015.52.12.118
The study of input and output characteristics in dynamic motion control is important indicator of the performance of mechanical equipment and is the factors to be considered during commissioning and maintenance of machinery or equipment, and project planning. The Analysis on dynamical characteristic of the input/output of the automation solution that used for motion control in machinery, is represented the control performance of device and including controller which connected at automation network by considering period of the frequency as applied load. This paper was constructed the simulator of B & R Powerlink to be widely used for motion control in the machine and showed the dynamic system characteristics by analysing the period.
Evaluation of Clinical Usefulness of EIS(Electro Interstitial Scan)
Kim, Soochan ; Bae, Jang-Han ; Jun, Min-Ho ; Kim, Jaeuk U. ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 12, 2015, Pages 124~133
DOI : 10.5573/ieie.2015.52.12.124
Electro interstitial scan shows potential as a non-invasive screening method. It can discriminate some diseases based on electric current response to induce low intensity direct current to limbs or local area of body. DDFAO was invented in France and it is claimed that multi-channel EIS(Electro Interstitial Scan) is useful for various diseases, especially, diagnoses of endocrine system such as diabetics are very effective. In this study, we verified the repeatability and sensitivity of DDFAO by using a RC phantom model and its clinical usefulness using data obtained from normal and diabetes subject groups. As a result, it showed the repeatability and the output change according to change of phantom characteristic, but it was hard to distinguish normal and patient groups non-invasively with just six surface electrodes of DDFAO. The repeatability and the clinical accuracy was not sufficient for screening or diagnostic purposes, as well. In spite of the results with low repeatability and accuracy conducted in this study, we still need further investigations to improve the EIS-based measurement method; EIS is very convenient and simple and it shows potential as a screening tool of the whole body health conditions rather than localized disease diagnosis.
Comparative Analysis of Quantitative Signal Intensity between 1.0 mol and 0.5 mol MR Contrast Agent
Jeong, Hyun Keun ; Jeong, Hyun Do ; Nam, Ki Chang ; Jang, Geun Yeong ; Kim, Ho Chul ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 12, 2015, Pages 134~141
DOI : 10.5573/ieie.2015.52.12.134
The purpose on this research is quantitatively comparing and analyzing signal intensity of 1.0mol and 0.5mol contrast agent. For this study, two MR phantoms were produced. One of them is used with 1.0mol Gadobutrol. The other is used with 0.5mol Gadoteridol. These two phantoms respectively have been scanned by SE T1 sequence which is used to get a general contrast-enhanced image in 1.5T MRI and 3D FLASH sequence which is used as enhanced angio MRI. Signal intensity was measured by scanned images as per contrast agent dilution ratio. The results were as follow: RSP(Reaction Starting Point) of the two sequences(2D SE, 3D FLASH) was respectively 6.0%, 60.0% in 0.5mol contrast and 2.0%, 20.0% in 1.0mol contrast, which means in 0.5mol contrast, RSP was formed faster than the one in 1.0mol contrast. MPSI was respectively 1358.8[a.u], 1573[a.u] in 0.5mol contrast and 1374[a.u], 1642.4[a.u] in 1.0mol contrast, which means 0.5mol contrast's MPP (0.4%, 10.0%) was formed faster than 1.0mol contrast's MPP (0.16%, 1.8%). Lastly, RA as per contrast agent dilution ratio was 27.4%, 11.8% wider in 0.5mol contrast(20747.4[a.u], 23204.6[a.u]) than in 1.0mol contrast(12691.9[a.u], 20747.4[a.u]). According to the study, we are able to assure that signal reaction time of 1.0mol contrast is slower than the one of 0.5mol contrast in contrast-enhanced MRI at two different sequences(2D SE, 3D FLASH). Furthermore, owing to the fact that there are not any signal intensity differences between 1.0mol and 0.5mol contrast, it is not true that high concentration gadolinium MR contrast agent does not always mean high signal intensity in MRI.
Lane Information Fusion Scheme using Multiple Lane Sensors
Lee, Soomok ; Park, Gikwang ; Seo, Seung-woo ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 12, 2015, Pages 142~149
DOI : 10.5573/ieie.2015.52.12.142
Most of the mono-camera based lane detection systems are fragile on poor illumination conditions. In order to compensate limitations of single sensor utilization, lane information fusion system using multiple lane sensors is an alternative to stabilize performance and guarantee high precision. However, conventional fusion schemes, which only concerns object detection, are inappropriate to apply to the lane information fusion. Even few studies considering lane information fusion have dealt with limited aids on back-up sensor or omitted cases of asynchronous multi-rate and coverage. In this paper, we propose a lane information fusion scheme utilizing multiple lane sensors with different coverage and cycle. The precise lane information fusion is achieved by the proposed fusion framework which considers individual ranging capability and processing time of diverse types of lane sensors. In addition, a novel lane estimation model is proposed to synchronize multi-rate sensors precisely by up-sampling spare lane information signals. Through quantitative vehicle-level experiments with around view monitoring system and frontal camera system, we demonstrate the robustness of the proposed lane fusion scheme.
Performance Improvement of Pedestrian Detection using a GM-PHD Filter
Lee, Yeon-Jun ; Seo, Seung-Woo ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 12, 2015, Pages 150~157
DOI : 10.5573/ieie.2015.52.12.150
Pedestrian detection has largely been researched as one of the important technologies for autonomous driving vehicle and preventing accidents. There are two categories for pedestrian detection, camera-based and LIDAR-based. LIDAR-based methods have the advantage of the wide angle of view and insensitivity of illuminance change while camera-based methods have not. However, there are several problems with 3D LIDAR, such as insufficient resolution to detect distant pedestrians and decrease in detection rate in a complex situation due to segmentation error and occlusion. In this paper, two methods using GM-PHD filter are proposed to improve the poor rates of pedestrian detection algorithms based on 3D LIDAR. First one improves detection performance and resolution of object by automatic accumulation of points in previous frames onto current objects. Second one additionally enhances the detection results by applying the GM-PHD filter which is modified in order to handle the poor situation to classified multi target. A quantitative evaluation with autonomously acquired road environment data shows the proposed methods highly increase the performance of existing pedestrian detection algorithms.
Stable and Precise Multi-Lane Detection Algorithm Using Lidar in Challenging Highway Scenario
Lee, Hanseul ; Seo, Seung-Woo ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 12, 2015, Pages 158~164
DOI : 10.5573/ieie.2015.52.12.158
Lane detection is one of the key parts among autonomous vehicle technologies because lane keeping and path planning are based on lane detection. Camera is used for lane detection but there are severe limitations such as narrow field of view and effect of illumination. On the other hands, Lidar sensor has the merits of having large field of view and being little influenced by illumination because it uses intensity information. Existing researches that use methods such as Hough transform, histogram hardly handle multiple lanes in the co-occuring situation of lanes and road marking. In this paper, we propose a method based on RANSAC and regularization which provides a stable and precise detection result in the co-occuring situation of lanes and road marking in highway scenarios. This is performed by precise lane point extraction using circular model RANSAC and regularization aided least square fitting. Through quantitative evaluation, we verify that the proposed algorithm is capable of multi lane detection with high accuracy in real-time on our own acquired road data.
A Study on the Full-HD HEVC Encoder IP Design
Lee, Sukho ; Cho, Seunghyun ; Kim, Hyunmi ; Lee, Jehyun ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 12, 2015, Pages 167~173
DOI : 10.5573/ieie.2015.52.12.167
This paper presents a study on the Full-HD HEVC(High Efficiency Video Coding) encoder IP(Intellectual Property) design. The designed IP is for HEVC main profile 4.1, and performs encoding with a speed of 60 fps of full high definition. Before hardware and software design, overall reference model was developed with C language, and we proposed a parallel processing architecture for low-power consumption. And also we coded firmware and driver programs relating IP. The platform for verification of developed IP was developed, and we verified function and performance for various pictures under several encoding conditions by implementing designed IP to FPGA board. Compared to HM-13.0, about 35% decrease in bit-rate under same PSNR was achieved, and about 25% decrease in power consumption under low-power mode was performed.
Development Small Size RGB Sensor for Providing Long Detecting Range
Seo, Jae Yong ; Lee, Si Hyun ;
Journal of the Institute of Electronics and Information Engineers, volume 52, issue 12, 2015, Pages 174~182
DOI : 10.5573/ieie.2015.52.12.174
In this paper, we developed the small size RGB sensor that recognizes a long distance using a low-cost color sensor. Light receiving portion of the sensor was used as a camera lens for far distance recognition, and illuminating unit was increased the strength of the light by using a high-power white LED and a lens mounted on the reflector. RGB color recognition algorithm consists of the learning process and the realtime recognition process. We obtain a normalized RGB color reference data in the learning process using the specimens painted with target colors, and classifies the three colors using the Mahalanobis distance in recognition process. We apply the developed the RGB color recognition sensor to a prototype of the part classification system and evaluate the performance of its.