Publications

Journal papers

  1. H. Lim and C. Han, “National borders transcended: the impact of geographical proximity on the growth of global innovation networks among cities in East Asia, ” International Journal of Urban Sciences, 2021. [DOI]
  2. C. Han and T. Naemura, “BumpMarker: a 3D-printed tangible marker for simultaneous tagging, tracking, and weight measurement,” ITE Transactions on Media Technology and Applications, vol. 7, no. 1, pp. 11-19, 2019. [DOI]
  3. C. Han, S.-H. Cho, M. Sung, H. S. Chung, S. M. Kim, and J. H. Lee, “Performance Improvement of Multi-IFoF-based Mobile Fronthaul Using Dispersion-Induced Distortion Mitigation with IF Optimization,” Journal of Lightwave Technology, vol. 34, no. 20, pp.4772-4778, 2016. [DOI]
  4. C. Han, S.-H. Cho, M. Sung, H. S. Chung, and J. H. Lee, “Clipping Distortion Suppression of Multi-IF-over-Fiber Mobile Fronthaul Links Using Shunt Diode Predistorter,” ETRI Journal, vol. 38, no. 2, pp. 227-234, 2016. [DOI]
  5. S.-H. Cho, C. Han, H. S. Chung, and J. H. Lee. “Demonstration of Mobile Fronthaul Test Bed Based on RoF Technology Supporting Two Frequency Assignments and 2×2 MIMO Antennas.” ETRI Journal 37, no. 6 (2015): 1055-1064. [DOI]
  6. M. Sung, C. Han, S.-H. Cho, H. S. Chung, and J. H. Lee. “Improvement of the transmission performance in multi-IF-over-fiber mobile fronthaul by using tone-reservation technique.” Optics express 23, no. 23 (2015): 29615-29624. [DOI]
  7. S. H. Chang, H. S. Chung, R. Ryf, N. K. Fontaine, C. Han, K. J. Park, K. Kim, J. C. Lee, J. H. Lee, B. Y. Kim, and Y. K. Kim. “Mode-and wavelength-division multiplexed transmission using all-fiber mode multiplexer based on mode selective couplers.” Optics express 23, no. 6 (2015): 7164-7172. [DOI]

International conference papers

  1. Changyo Han*, Ryo Takahashi*, Yuchi Yahagi*, and Takeshi Naemura, “3D Printing Firm Inflatables with Internal Tethers,” in Extended Abstracts of the 2021 CHI Conference on Human Factors in Computing Systems (CHI EA ’21), pp. 1-7. (Acceptance rate 39.0%). (* These authors contributed equally to this paper) [DOI]
  2. Ikuo Kamei, Changyo Han, Takefumi Hiraki, Shogo Fukushima, and Takeshi Naemura: “CoVR: Co-located Virtual Reality Experience Sharing for Facilitating Joint Attention via Projected View of HMD Users,” In ACM SIGGRAPH Asia 2020 Emerging Technologies, Talk (SA 2020), Dec. 2020. [DOI]
  3. Ryo Takahashi, Masaaki Fukumoto,Changyo Han, Takuya Sasatani, Yoshiaki Narusue, and Yoshihiro Kawahara. “TelemetRing: A Batteryless and Wireless Ring-shaped Keyboard using Passive Inductive Telemetry,” in Proceedings of the 33rd Annual ACM Symposium on User Interface Software and Technology – UIST ’20., Oct. 2020. [DOI]
  4. Changyo Han, Ryo Takahashi, Yuchi Yahagi, and Takeshi Naemura, “PneuModule: Using Inflatable Pin Arrays for Reconfigurable Physical Controls on Pressure-Sensitive Touch Surfaces,” In Proceedings of the 2020 annual conference on Human Factors in Computing Systems – CHI ’20, Apr. 2020. (acceptance rate: 24.8 %) Honorable Mention Award, CHI’20 @ CHI’21 People’s Choice Best Demo Honorable Mention Award  [DOI]
  5. Changyo Han, Katsufumi Matsui, and Takeshi Naemura, “ForceStamps: Fiducial Markers for Pressure-sensitive Touch Surfaces to Support Rapid Prototyping of Physical Control Interfaces,” In Proceedings of the International Conference on Tangible, Embedded, and Embodied Interaction – TEI ’20, pp. 273-285, Feb. 2020. (acceptance rate: 28 %) Best Paper Award [DOI]
  6. Keisuke Shiro, Ryotaro Miura, Changyo Han, and Jun Rekimoto, “An Intuitive Interface for Digital Synthesizer by Pseudo-intention Learning, ” Proceedings of the 14th International Audio Mostly Conference: A Journey in Sound on ZZZ, pp. 39-44, 2019. [DOI]
  7. Changyo Han and Takeshi Naemura, “BumpMarker: 3D printed marker for simultaneous tagging and weight measurement,” In Proc. ACM SCF 2018, Cambridge, MA, USA, Jun. 2018. [page] [pdf]
  8. M. Sung, C. Han, S. H. Cho, H. S. Chung, S. M. Kim and J. H. Lee, “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,” 2016 International Conference on Information and Communication Technology Convergence (ICTC), Jeju, 2016, pp. 775-777. [DOI]
  9. S. H. Cho, C. Han, M. Sung, H. S. Chung, S. M. Kim and J. H. Lee, “Experimental investigations of uplink transmission performances in a mobile fronthaul based on IFoF technique,” 2016 International Conference on Information and Communication Technology Convergence (ICTC), Jeju, 2016, pp. 772-774. [DOI]
  10. C. Han, M. Sung, S.-H. Cho, H. S. Chung, S. M. Kim, and J. H. Lee, “Impact of Dispersion-Induced Second-Order Distortion in Multi-IFoF-based Mobile Fronthaul Link for C-RAN,” in Proc. OFC 2016, TU2B.4., 2016 [DOI]
  11. C. Han, S.-H. Cho, H. S. Chung, and J. H. Lee. “Linearity improvement of directly-modulated multi-IF-over-fibre LTE-A mobile fronthaul link using shunt diode predistorter.” In Optical Communication (ECOC), 2015 European Conference on, pp. 1-3. IEEE, 2015. [DOI]
  12. S.-H. Cho, H. S. Chung, C. Han, S. Lee, and J. H. Lee. “Experimental demonstrations of next generation cost-effective mobile fronthaul with IFoF technique.” In Optical Fiber Communication Conference, pp. M2J-5. Optical Society of America, 2015. [DOI]
  13. C. Han, S.-H. Cho, H. S. Chung, S. Lee, and J. H. Lee. “Experimental comparison of the multi-IF carrier generation methods in IF-over-Fiber system using LTE signals.” In Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP) 2014 International Topical Meeting on. 2014. [DOI]
  14. H. S. Chung, S.-H. Cho, C. Han, S. Lee, J. C. Lee, and J. H. Lee. “Design of RoF based mobile fronthaul link with multi-IF carrier for LTE/LTE-A signal transmission.” In Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP), 2014 International Topical Meeting on, pp. 303-306. IEEE, 2014. [DOI]
  15. S.-H. Cho, H. S. Chung, C. Han, S. Lee, and J. H. Lee. “Investigaitons of EVM performance degradations caused by nonlienarity in mobile fronthaul architecture based on IFoF technology.” In 2014 12th International Conference on Optical Internet 2014 (COIN). 2014. [DOI]
  16. C. Han, H. S. Chung, S. H. Chang, K. Kim, and J. H. Lee. “Effect of rotational misalignment in phase-plate based mode multiplexer.” In Optical Internet 2014 (COIN), 2014 12th International Conference on, pp. 1-2. IEEE, 2014. [DOI]
  17. H. Lu, Y. Mori, C. Han, and K. Kikuchi, “Novel polarization-diversity scheme based on mutual phase conjugation for fiber-nonlinearity mitigation in ultra-long coherent optical transmission systems,” European Conference on Optical Communication (ECOC2013), We.3.C.3, London,UK (22-26 Sept. 2013), [DOI]
  18. Y. Mori, C. Han, H. Lu, and K. Kikuchi, “Wavelength demultiplexing of Nyquist WDM signals under large frequency offsets in digital coherent receivers,” European Conference on Optical Communication (ECOC2013), Mo.4.C.6, London,UK (22-26 Sept. 2013) [DOI]
  19. C. Han, K. Igarashi, and K. Kikuchi, “Influence of channel misalignment of time-interleaved DAC on sensitivity degradation in coherent optical receivers,” Optical Fiber Communications Conference (OFC 2013), Anaheim, CA, USA, OTh1F.2 (17-21 March 2013) [DOI]
  20. Yuki Tsukui, Hiroki Asada, Changyo Han, Kenichi Okada, and Akira Matsuzawa, “Area Reduction of Millimeter-Wave CMOS Amplifier Using Narrow Transmission Line,” IEEE Asia-Pacific Microwave Conference (APMC), Melbourne, Australia, Dec. 2011. [IEEE]
  21. Ryo Minami, Changyo Han, Kota Matsushita, Kenichi Okada, and Akira Matsuzawa, “Effect of Transmission Line Modeling Using Different De-embedding Methods,” IEEE MTT-S European Microwave Conference (EuMC), Manchester, UK, Oct. 2011. [DOI]