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Research
Prof. Jichai Jeong`s paper, accepted in Optics Express
Author Administrator (IP: *.152.163.70) Date 2014-09-16 15:31 Views 724
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Prof. Jichai Jeong`s new research on `Improvement of the chromatic dispersion tolerance in coherent optical OFDM systems using shifted DFT windows for ultra-long-haul optical transmission systems` was accepted in Optics Express.


Title: Improvement of the chromatic dispersion tolerance in coherent optical OFDM systems using shifted DFT windows for ultra-long-haul optical transmission systems


Abstract:

In a high-capacity ultra-long-haul optical coherent orthogonal frequency-division multiplexing (CO-OFDM) system, the dispersion tolerance is determined by the length of cyclic extension (CE). In this paper, we propose a novel scheme to substantially improve the dispersion tolerance of CO-OFDM systems without increasing the CE length. Multiple time-shifted discrete Fourier transform (DFT) windows are exploited at the receiver, each demodulating only a part of the subcarriers. Effectively, the proposed scheme reduces the bandwidth of the OFDM signals under demodulation. Numerical simulations are performed to show the improved dispersion tolerance of the proposed scheme in comparison with the conventional CO-OFDM system. We show that the dispersion tolerance improves by a factor equal to the number of DFT windows. The tradeoff between the improved dispersion tolerance and increased receiver complexity is also presented.

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Research
Prof. Seong-Whan Lee`s paper accepted in IEEE Transactions on Neural Systems and Rehabilitation Engineering
Prof. Seong-Whan Lee`s paper accepted in IEEE Transactions on Neural Systems and…
Prof. Seong-Whan Lee`s new research on `Decoding Three-Dimensional Trajectory of Executed and Imagined Arm Movements from Electroencephalogram Signals` was accepted in IEEE Transactions on Neural Systems and Rehabilitation Engineering.   Title: Decoding Three-Dimensional Trajectory of Executed and Imagined Arm Movements from Electroencephalogram Signals Abstract: Decoding motor commands from non-invasively measured neural signals has be…

2014-11-17

Prof. Jae-Ho Han`s paper accepted in IEEE/ASME Transactions on Mechatronics
Prof. Jae-Ho Han`s paper accepted in IEEE/ASME Transactions on Mechatronics
Prof. Jae-Ho Han`s new research on `Experimental Study of a Hybrid Small-Signal Parameter Modeling and Extraction Method for a Micro-Optoelectronic Device` was accepted in IEEE/ASME Transactions on Mechatronics.   Title: Experimental Study of a Hybrid Small-Signal Parameter Modeling and Extraction Method for a Micro-Optoelectronic Device Abstract:  In the device performance variation and control for micro-devices, accurate models are cr…

2014-11-05

Prof. Jichai Jeong`s paper, accepted in Optics Express
Prof. Jichai Jeong`s paper, accepted in Optics Express
Prof. Jichai Jeong`s new research on `Improvement of the chromatic dispersion tolerance in coherent optical OFDM systems using shifted DFT windows for ultra-long-haul optical transmission systems` was accepted in Optics Express. Title: Improvement of the chromatic dispersion tolerance in coherent optical OFDM systems using shifted DFT windows for ultra-long-haul optical transmission systems Abstract: In a high-capacity ultra-long-haul optic…

2014-09-16

Prof. Dong-Joo Kim`s paper, accepted in BMC Medicine
Prof. Dong-Joo Kim`s paper, accepted in BMC Medicine
Prof. Dong-Joo Kim`s new research on `Quantitative Analysis of Computed Tomography Images and Early Detection of Cerebral Edema for Pediatric Traumatic Brain Injury Patients: Retrospective Study` was accepted in BMC Medicine. Title: Quantitative Analysis of Computed Tomography Images and Early Detection of Cerebral Edema for Pediatric Traumatic Brain Injury Patients: Retrospective Study Abstract: The purpose of this study was to identify wh…

2014-09-01

Prof. Seong-Whan Lee`s paper, accepted in Pattern Recognition
Prof. Seong-Whan Lee`s paper, accepted in Pattern Recognition
Prof. Seong-Whan Lee`s new research on `Nighttime Face Recognition at Large Standoff: Cross-Distance and Cross-Spectral Matching` was accepted in Pattern Recognition. Title: Nighttime Face Recognition at Large Standoff: Cross-Distance and Cross-Spectral Matching Abstract:Face recognition in surveillance systems is important for security applications, especially in nighttime scenarios where the subject is far from the camera. However, due t…

2014-06-10

Prof. Christian Wallraven`s paper, accepted in IEEE Transactions on Robotics
Prof. Christian Wallraven`s paper, accepted in IEEE Transactions on Robotics
Prof. Christian Wallraven`s new research on `Active In-Hand Object Recognition on a Humanoid Robot` was accepted in IEEE Transactions on Robotics. Title: Active In-Hand Object Recognition on a Humanoid RobotAbstract:For any robot, the ability to recognize and manipulate unknown objects is crucial to successfully work in natural environments. Object recognition and categorization is a very challenging problem, as three-dimensional objects often…

2014-05-19

PhD candidate Kang Pyungwon published paper in Journal of Neuroscience
PhD candidate Kang Pyungwon published paper in Journal of Neuroscience
Kang Pyungwon, a PhD candidate, supervised by Prof. Hackjin Kim has her paper published in Journal of Neuroscience. Title:Neural Evidence for Individual and Cultural Variability in the Social Comparison Effect Abstract:Although several studies have investigated the neural mechanism of social comparison, it remains unclear whether and how cultural membership, particularly independent versus interdependent cultures, may differentiall…

2014-04-30

Prof. Byoung-Kyong Min`s paper, accepted in Trends in Biotechnology
Prof. Byoung-Kyong Min`s paper, accepted in Trends in Biotechnology
Prof. Byoung-Kyong Min`s new research on `Electroencephalography/sonication-mediated human brain-brain interfacing technology` was accepted in Trends in Biotechnology. Title: Electroencephalography/sonication-mediated human brain-brain interfacing technology Abstract: Direct communication between two brains is an upcoming area of research. The present paper suggests feasible techniques for accomplishing neural transfer between …

2014-04-03

Prof. Christian Wallraven`s paper published in Psychonomic Bulletin & Review, 2013
Prof. Christian Wallraven`s paper published in Psychonomic Bulletin & Review, 20
Prof. Christian Wallraven`s new research on `Touching on face space: Comparing visual and haptic processing of face shapes` was also published in Psychonomic Bulletin & Review, 2013. Title:  Touching on face space: Comparing visual and haptic processing of face shapes Abstract: The idea that faces are represented within a structured face space (Valentine, 1991) has gained considerable experimental support both from physiolo…

2014-04-02

Prof. Christian Wallraven`s paper published in Psychonomic Bulletin & Review
Prof. Christian Wallraven`s paper published in Psychonomic Bulletin & Review
Prof. Christian Wallraven`s new research on `The eyes grasp, the hands see: Metric category knowledge transfers between vision and touch` was published in Psychonomic Bulletin & Review, 2013.   Title:  The eyes grasp, the hands see: Metric category knowledge transfers between vision and touch Abstract: Categorization of seen objects is often determined by the shapes of objects. However, shape is not exclusive to the visual m…

2014-04-02

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