Publications

Yousuke Nakagawa, Changyo Han, Takeshi Naemura (2023). 卓上と壁の間を移行する群ロボットcorobosにおけるアタッチメントの改良. インタラクション2023.

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Kota Araki, Yuki Kakui, Ryotaro Tanaka, Changyo Han, Shogo Fukushima, Takeshi Naemura (2023). A Color Vibration Method Robust to Interframe Difference for Embedding Imperceptible Markers in Videos. The Journal of The Institute of Image Information and Television Engineers.

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Qunchao Zhou, Takuya Sasatani, Changyo Han, Yoshihiro Kawahara (2022). Simultaneous Wireless Information and Power Transfer Technique Using Frequency-Modulated DC/DC Converters. Asian Wireless Power Transfer Workshop (AWPT 2022).

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Yuchi Yahagi, Katsufumi Matsui, Ari Hautasaari, Changyo Han, Naho Tomiki, Takeshi Naemura (2022). 遠隔の初学者と経験者が共同で電子工作を行う製作ツールの提案. インタラクション2022.

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Yuki Kakui, Kota Araki, Changyo Han, Shogo Fukushima, Takeshi Naemura (2022). 動画に重畳した不可視マーカの頑健な認識―デュアルカメラによる同時撮影―. 第21回情報科学技術フォーラム(FIT2022).

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Yasunori Akashi, Ayako Yogo, Changyo Han, Takeshi Naemura (2022). 再帰透過光学素子による空中像に対する最適な鑑賞方向の変換. 映像情報メディア学会冬季大会2022.

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Minami Aramaki, Ari Hautasaari, Changyo Han, Shogo Fukushima, Takeshi Naemura (2022). モード選択と手指動作入力を用いた対話的なアバターのモーション制御. MVE2022.

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Yuki Kakui, Kota Araki, Changyo Han, Shogo Fukushima, Takeshi Naemura (2022). Using a Dual-Camera Smartphone to Recognize Imperceptible 2D Barcodes Embedded in Videos. Adjunct Proceedings of the 35th Annual ACM Symposium on User Interface Software and Technology.

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Yousuke Nakagawa, Changyo Han, Takeshi Naemura (2022). corobos: 卓上と壁の間を移行する群ロボット. エンタテインメントコンピューティング2022.

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Changyo Han, Ryo Takahashi, Yuchi Yahagi, Takeshi Naemura (2021). 3D Printing Firm Inflatables with Internal Tethers. Extended Abstracts of the 2021 CHI Conference on Human Factors in Computing Systems.

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Ryotaro Tanaka, Ikuo Kamei, Ken Takaki, Changyo Han, Shogo Fukushima, Takeshi Naemura (2021). 映像における色振動方式不可視マーカの読み取り可能距離の拡張. MVE2021.

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Yuki Kakui, Ikuo Kamei, Ken Takaki, Changyo Han, Shogo Fukushima, Takeshi Naemura (2021). 可視光通信プロジェクタの高画質化のための光源制御による輝度補正. MVE2021.

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Kota Araki, Ryotaro Tanaka, Yuki Kakui, Changyo Han, Shogo Fukushima, Takeshi Naemura (2021). 動画像に不可視マーカを埋め込むためのフレーム間差分に頑健な色振動方式の基礎検討. 映像メディア処理シンポジウム (IMPS 2021).

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Hwajin Lim, Changyo Han (2021). National borders transcended : the impact of geographical proximity on the growth of global innovation networks among cities in East Asia proximity on the growth of global innovation networks. International Journal of Urban Sciences.

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Ikuo Kamei, Changyo Han, Takefumi Hiraki, Shogo Fukushima, Takeshi Naemura (2020). CoVR: Co-located Virtual Reality Experience Sharing for Facilitating Joint Attention via Projected View of HMD Users. SIGGRAPH Asia 2020 Emerging Technologies.

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Ryo Takahashi, Masaaki Fukumoto, Changyo Han, Takuya Sasatani, Yoshiaki Narusue, Yoshihiro Kawahara (2020). TelemetRing: A Batteryless and Wireless Ring-shaped Keyboard using Passive Inductive Telemetry. Proceedings of the 33rd Annual ACM Symposium on User Interface Software and Technology.

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Changyo Han, Ryo Takahashi, Yuchi Yahagi, Takeshi Naemura (2020). PneuModule: Using Inflatable Pin Arrays for Reconfigurable Physical Controls on Pressure-Sensitive Touch Surfaces. Proceedings of the 2020 CHI Conference on Human Factors in Computing Systems - CHI ‘20.

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Ryo Takahashi, Changyo Han, Takuya Sasatani, Yoshiaki Narusue, Masaaki Fukumoto, Yoshihiro Kawahara, Takeshi Naemura (2020). ワイヤレスな指輪型キーボードのバッテリレス化手法. 電子情報通信学会 総合大会 2020.

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Changyo Han, Ryo Takahashi, Yuchi Yahagi, Takeshi Naemura (2020). PneuModule: 感圧タッチパッドとインフレータブルピンアレイを用いた再構成可能な物理インタフェース. インタラクション2023.

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Ikuo Kamei, Changyo Han, Takefumi Hiraki, Shogo Fukushima, Takeshi Naemura (2020). HMD視点映像のプロジェクタ投影によるVR体験の共有. VR大会2020.

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Changyo Han, Katsufumi Matsui, Takeshi Naemura (2020). ForceStamps: Fiducial Markers for Pressure-sensitive Touch Surfaces to Support Rapid Prototyping of Physical Control Interfaces. Proceedings of the Fourteenth International Conference on Tangible, Embedded, and Embodied Interaction - TEI ‘20.

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Keisuke Shiro, Ryotaro Miura, Changyo Han, Jun Rekimoto (2019). An Intuitive Interface for Digital Synthesizer by Pseudo-intention Learning. Proceedings of the 14th International Audio Mostly Conference: A Journey in Sound - AM ‘19.

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Changyo Han, Takeshi Naemura (2019). BumpMarker: a 3D-printed tangible marker for simultaneous tagging, tracking, and weight measurement. ITE Transactions on Media Technology and Applications.

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Saho Yamaguchi, Changyo Han, Takeshi Naemura (2018). 映像コンテンツとロボットの連携に向けた非可聴音声への信号埋め込み 手法の検討. 電子情報通信学会 MVE研究会.

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Changyo Han, Minkyu Sung, Jong Hyun Lee, Hwan Seok Chung, Seung-Hyun Cho (2018). Optical signal transmission system and method of allocating center frequencies of intermediate frequency (IF) carriers for frequency division multiplexing (FDM) optical fiber link.

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Seung-Hyun Cho, Jong Hyun Lee, Hwan Seok Chung, Changyo Han (2018). Apparatuses and methods for transmitting and receiving control signal in analog radio-over-fiber (ROF)-based mobile fronthaul.

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Minkyu Sung, Jong Hyun Lee, Hwan Seok Chung, Seung-Hyun Cho, Changyo Han (2018). Analog optical transmission system using dispersion management technique.

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Sun Hyok Chang, Kwangjoon Kim, Hyun Jae Lee, Changyo Han (2017). Mode division multiplexed passive optical network (MDM-PON) apparatus, and transmission and reception method using the same.

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Hwan Seok Chung, Seung-Hyun Cho, Jong Hyun Lee, Sangsoo Lee, Changyo Han (2017). Control apparatus and method for monitoring optical fiber link.

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Changyo Han, Minkyu Sung, Seung-Hyun Cho, Hwan Seok Chung, Sun Me Kim, Jong Hyun Lee (2016). Performance Improvement of Multi-IFoF-Based Mobile Fronthaul Using Dispersion-Induced Distortion Mitigation With IF Optimization. Journal of Lightwave Technology.

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Seung-Hyun Cho, Changyo Han, Minkyu Sung, Hwan Seok Chung, Sun Me Kim, Jong Hyun Lee (2016). Experimental Investigations of Uplink Transmission Performances in a Mobile Fronthaul based on IFoF Technique. International Conference on Information and Communication Technology Convergence (ICTC 2016).

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Minkyu Sung, Changyo Han, Seung-Hyun Cho, Hwan Seok Chung, Sun Me Kim, Jong Hyun Lee (2016). Bandwidth Efficient Transmission of 96 LTE-A Signals with 118-Gb/s CPRI-Equivalent Rate using 2-GHz Frequency Span and Intermixing Mitigation for Mobile Fronthaul. International Conference on Information and Communication Technology Convergence (ICTC 2016).

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Changyo Han, Seung-Hyun Cho, Minkyu Sung, Hwan Seok Chung, Jong Hyun Lee (2016). Clipping Distortion Suppression of Directly Modulated Multi-IF-over-Fiber Mobile Fronthaul Links Using Shunt Diode Predistorter. ETRI Journal.

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Changyo Han, Minkyu Sung, Seung-Hyun Cho, Hwan Seok Chung, Sun Me Kim, Jong Hyun Lee (2016). Impact of Dispersion-Induced Second-Order Distortion in Multi-IFoF-based Mobile Fronthaul Link for C-RAN. Optical Fiber Communication Conference (OFC 2016).

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Seung-Hyun Cho, Changyo Han, Hwan Seok Chung, Jong Hyun Lee (2015). Demonstration of Mobile Fronthaul Test Bed Based on RoF Technology Supporting Two Frequency Assignments and 2✕2 MIMO Antennas. ETRI Journal.

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Minkyu Sung, Changyo Han, Seung-Hyun Cho, Hwan Seok Chung, Jong Hyun Lee (2015). Improvement of the transmission performance in multi-IF-over-fiber mobile fronthaul by using tone-reservation technique. Optics Express.

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Changyo Han, Seung-Hyun Cho, Hwan Seok Chung, Jong Hyun Lee (2015). Linearity Improvement of Directly-Modulated Multi-IF-over-Fibre LTE-A Mobile Fronthaul Link Using Shunt Diode Predistorter. European Conference on Optical Communication (ECOC 2015).

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Sun Hyok Chang, Hwan Seok Chung, Roland Ryf, Nicolas K. Fontaine, Changyo Han, Kyung Jun Park, Kwangjoon Kim, Jyung Chan Lee, Jong Hyun Lee, Byoung Yoon Kim, Young Kie Kim (2015). Mode- and wavelength-division multiplexed transmission using all-fiber mode multiplexer based on mode selective couplers. Optics Express.

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Andres C. Najarro, Sung Man Kim, Changyo Han, Seung-Hyun Cho, Hwan Seok Chung, Jong Hyun Lee (2015). Nonlinear Compensation based on Predistortion for Radio over Fiber Systems. 광전자 및 광통신 학술회의 (COOC 2015).

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Seung-Hyun Cho, Hwan Seok Chung, Changyo Han, Sangsoo Lee, Jong Hyun Lee (2015). Experimental Demonstrations of Next Generation Cost-Effective Mobile Fronthaul with IFoF technique. Optical Fiber Communication Conference (OFC 2015).

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Changyo Han, Hwan Seok Chung, Sun Hyok Chang, Kwangjoon Kim, Jong Hyun Lee (2015). 6×6 MIMO 신호 처리를 이용한 위상 판 기반 모드 다중화기의 성능 평가. 광전자 및 광통신 학술회의 (COOC 2015).

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Sun Hyok Chang, Hwan Seok Chung, Changyo Han, Kwangjoon Kim, Jyung Chan Lee, Jong Hyun Lee (2015). 3개의 모드를 이용한 모드 분할 다중 및 파장 분할 다중 광전송. 광전자 및 광통신 학술회의 (COOC 2015).

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Changyo Han, Seung-Hyun Cho, Hwan Seok Chung, Sangsoo Lee, Jong Hyun Lee (2014). Experimental Comparison of the Multi-IF Carrier Generation Methods in IF-over-Fiber System Using LTE Signals. 2014 International Topical Meeting on Microwave Photonics and the 2014 9th Asia-Pacific Microwave Photonics Conference (MWP/APMP 2014).

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Seung-Hyun Cho, Hwan Seok Chung, Changyo Han, Sangsoo Lee, Jong Hyun Lee (2014). Investigaitons of EVM Performance Degradations caused by Nonlienarity in Mobile Fronthaul Architecture based on IFoF technology. 12th International Conference on Optical Internet (COIN 2014).

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Changyo Han, Hwan Seok Chung, Sun Hyok Chang, Kwangjoon Kim, Jong Hyun Lee (2014). Effect of rotational misalignment in phase-plate based mode multiplexer. 12th International Conference on Optical Internet (COIN 2014).

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Changyo Han, Hwan Seok Chung, Sun Hyok Chang, Kwangjoon Kim (2014). 위상 판을 이용한 모드 다중화기의 구현. 광전자 및 광통신 학술회의 (COOC 2014).

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Hwan Seok Chung, Sun Hyok Chang, Changyo Han, Kwangjoon Kim, Jyung Chan Lee, Jong Hyun Lee (2014). DP-16QAM과 4x4 MIMO 신호처리를 이용한 모드분할다중화 광 송수신 실험. 광전자 및 광통신 학술회의 (COOC 2014).

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Hwan Seok Chung, Seung-Hyun Cho, Changyo Han, Sangsoo Lee, Jyung Chan Lee, Jong Hyun Lee (2014). Design of RoF based Mobile Fronthaul Link with Multi-IF Carrier for LTE/LTE-A Signal Transmission. 2014 International Topical Meeting on Microwave Photonics and the 2014 9th Asia-Pacific Microwave Photonics Conference (MWP/APMP 2014).

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Daiki Hiraoka, Changyo Han, Kazuro Kikuchi (2013). ナイキストWDM信号におけるチャンネル間クロストークペナルティーの適応FIRフィルタによる抑圧. 電子情報通信学会 総合大会 2013.

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Yojiro Mori, Changyo Han, Hongbo Lu, Kazuro Kikuchi (2013). Wavelength Demultiplexing of Nyquist WDM Signals under Large Frequency Offsets in Digital Coherent Receivers. European Conference and Exhibition on Optical Communication (ECOC 2013).

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Hongbo Lu, Kazuro Kikuchi, Changyo Han, Yojiro Mori (2013). Novel Polarization-diversity Scheme Based on Mutual Phase Conjugation for Fiber-nonlinearity Mitigation in Ultra-long Coherent Optical Transmission Systems. European Conference and Exhibition on Optical Communication (ECOC 2013).

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Changyo Han, Koji Igarashi, Kazuro Kikuchi (2013). Influence of Channel Misalignment of Time-interleaved DAC on Sensitivity Degradation in Coherent Optical Receivers. Optical Fiber Communication Conference (OFC 2013).

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Changyo Han, Koji Igarashi, Kazuro Kikuchi (2012). Influence of channel misalignment of time-interleaved DAC on sensitivity degradation in coherent receivers. 電子情報通信学会 光通信システム研究会.

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Yuki Tsukui, Hiroki Asada, Changyo Han, Kenichi Okada, Akira Matsuzawa (2011). ミリ波帯電力増幅器に向けた伝送線路構造の最適化. 電子情報通信学会 ソサイエティ大会 2011.

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Ryo Minami, Changyo Han, Kota Matsushita, Kenichi Okada, Akira Matsuzawa (2011). Effect of Transmission Line Modeling Using Different De-embedding Methods. European Microwave Conference 2011.

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Yuki Tsukui, Hiroki Asada, Changyo Han, Kenichi Okada, Akira Matsuzawa (2011). Area Reduction of Millimeter-Wave CMOS Amplifier Using Narrow Transmission Line. Asia-Pacific Microwave Conference (APMC 2011).

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Changyo Han, Hiroki Asada, Kota Matsushita, Keigo Bunsen, Kenichi Okada, Akira Matsuzawa (2010). CMOSプロセスにおける高周波向け配線構造の検討. 電子情報通信学会 ソサイエティ大会 2010.

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