TELPAC: A Time and Energy Efficient Protocol for Locating and Patching Coverage Holes in WSNs Phi Le Nguyen, Kien Nguyen, Huy Vu, Yusheng Ji Journal of Network and Computer Applications, Elsevier, vol.147, Dec. 2019. [Abstract | pdf] Enhancing multipath TCP initialization with SYN duplication Kien Nguyen, Mirza Golam Kibria, Kentaro Ishizu, and Fumihide Kojima IEICE Transactions on Communications, vol.E102-B, no.9, Sept. 2019. [Abstract | pdf] Steady-state analysis of class-E shunt inductor inverter outside ZCS and ZDCS conditions Ali Lotfi, Akihiko Katsuki, Fujio Kurokawa, Hiroo Sekiya, Marian K. Kazimierczuk, and Frede Blaabjerg IEEE Transactions on Components, Packaging and Manufacturing Technology, vol.9, no.8, pp.1587-1594, Aug. 2019. [Abstract | pdf] An Effective Metaheuristic for Multiple Traveling Repairman Problem with Distance Constraints Ha Bang Ban, Duc Nghia Nguyen, Kien Nguyen COMPUTING AND INFORMATICS, Aug. 2019. [Abstract | pdf] Joint User Association and Power Allocation for Millimeter- Wave Ultra-dense Networks Huy. T. Nguyen, H. Murakami, Kien Nguyen, K. Ishizu, F. Kojima, J.D. Kim, S.H. Chung, and W. J. Hwang Mobile Networks and Applications Journal , July 2019. [Abstract | pdf] Rigorous analytical model of saturated throughput for the IEEE 802.11p EDCA Shintaro Ikuma, Zhetao Li, Tingrui Pei, Young-June Choi, and Hiroo Sekiya IEICE Transactions on Communications, vol.E102-B, no.4, pp.699-707, Apr. 2019. [Abstract | pdf] Analysis of class-DE PA using MOSFET devices with non-equally grading coefficient Ali Lotfi, Akihiko Katsuki, Fujio Kurokawa, Hiroo Sekiya, Marian K. Kazimierczuk, and Frede Blaabjerg IEEE Transactions on Circuits and Systems I: Regular Papers, vol.66, no.7, pp.2794-2802, Mar. 2019. [Abstract | pdf] Hybrid precoding for massive mmWave MIMO systems Xianru Liu, Xueming Li, Shu Cao, Qingyong Deng, Rong Ran, Kien Nguyen, and Tingrui Pei IEEE Access, vol.7, no.33577-33586, Mar. 2019. [Abstract | pdf] Performance evaluation of IEEE 802.11ad in evolving Wi-Fi networks Kien Nguyen, Mirza Golam Kibria, Kentaro Ishizu, and Fumihide Kojima Wireless Communications and Mobile Computing, vol.2019, Feb. 2019. [Abstract | pdf] An approach to reinforce multipath TCP with path-aware information Kien Nguyen, Mirza Golam Kibria, Kentaro Ishizu, Fumihide Kojima, and Hiroo Sekiya Special Issue: Green Wireless Networks in 5G-inspired Applications, Sensors 2019, no.3, Jan. 2019. [Abstract | pdf]

A Research on Measuring Latency of Private Ethereum Blockchain Xuan Chen, Kien Nguyen, Hiroo Sekiya 2019 IEEE Workshop on Nonlinear Circuit Networks, Dec. 2019. [Abstract | pdf] An Evaluation of MPTCP on Raspberry Pi3 Taichi Tsuru, Kien Nguyen, and Hiroo Sekiya 2019 IEEE Workshop on Nonlinear Circuit Networks, Dec. 2019. [Abstract | pdf] Exploiting Q-learning in Extending the Network Lifetime of Wireless Sensor Networks with Holes Khanh Le, Thanh-Hung Nguyen, Kien Nguyen, and Phi Le Nguyen IEEE ICPADS 2019, Tianjin, China, Dec. 2019. [Abstract | pdf] A Dynamic Routing Protocol for Maximizing Network Lifetime in WSNs with Holes Phi Le Nguyen, Thanh Hung Nguyen, Kien Nguyen ACM SoICT 2019, Hanoi-Halong Bay, Vietnam, no.216-223, Dec. 2019. [Abstract | pdf] A Software Defined Networking Approach for Guaranteeing Delay in Wi-Fi Networks Do Thi Thu Hien, Thanh Duc Ngo, Duy-Dinh Le, Hiroo Sekiya, Van-Hau Pham, Kien Nguyen ACM SoICT 2019, pp. 191-196, Hanoi-Halong Bay, Vietnam, Dec. 2019. [Abstract | pdf] Implementation of Spiking Neural Network with Wireless Communications Ryuya Hiraoka, Kazuki Matsumoto, Kien Nguyen, Hiroyuki Torikai, Hiroo Sekiya 26th International COnference on Neuron Information Processing of the Asia-Pacific Neural Network Society (ICONIP2019), pp.619-626, Dec. 2019. [Abstract | pdf] A 1MHz Class-E2 Single-Stage Power Factor Correction Converter with Frequency Control Wenqi Zhu, Kien Nguyen and Hiroo Sekiya 2019 IEEE Workshop on Nonlinear Circuit Networks, Dec. 2019. [Abstract | pdf] Evaluation of Load Variations Characteristic in Class-F Amplifier Yuki Oue, Kien Nguyen, and Hiroo Sekiya 2019 IEEE Workshop on Nonlinear Circuit Networks, Dec. 2019. [Abstract | pdf] Analysis of Class-E Rectifier with Low Output-Filter Inductance Asiya, Tatsuki Osato, Kien Nguyen, Hiroo Sekiya, and Xiuqin Wei 8TH INTERNATIONAL CONFERENCE ON RENEWABLE ENERGY RESEARCH AND APPLICATIONS, Nov. 2019. [Abstract | pdf] Load independent parallel resonant inverter H. Sekiya, Y. Ozawa and X. Wei 16th International SoC Design Conference (ISOCC2019), pp.148-149, Oct. 2019. [Abstract | pdf] Analysis of load-independent class-E inverter at any duty ratio Natsumi Obinata, Weisen Luo, Xiuqin Wei, and Hiroo Sekiya The 45th Annual Conference of the IEEE Industrial Electronics Society (IECON 2019), pp.1615-1620, Oct. 2019. [Abstract | pdf] A novel circuit topology and its design for class-E^2 DC-DC converter Yusuke Ogi, Fumiya Ebihara, Xiuqin Wei, and Hiroo Sekiya The Eleventh Annual Energy Conversion Congress and Exposition (ECCE2019), Baltimore, MD, USA, pp.1256-1260, Oct. 2019. [Abstract | pdf] Design of 6.78 MHz SiC MOSFET class-E inverter with a class-phi high-speed driver Haruma Yogi, Xiuqin Wei, Hiroo Sekiya, and Takashi Hikihara The Eleventh Annual Energy Conversion Congress and Exposition (ECCE2019), Baltimore, MD, USA, pp.375-379, Oct. 2019. [Abstract | pdf] Targeting Bufferbloat in Wi-Fi Networks: An Emulator-based Approach Do Thi Thu Hien, Thanh Duc Ngo, Duy-Dinh Le, Hiroo Sekiya, Van-Hau Pham, Kien Nguyen IEEE ISCIT 2019, Hochiminh City, Vietnam, Sept. 2019. [Abstract | pdf] Design of load-independent class-E inverter with MOSFET parasitic capacitances Weisen Luo, Xiuqin Wei, Hiroo Sekiya, and Tadashi Suetsugu 62nd IEEE International Midwest Symposium on Circuits and Systems (MWSCAS2019)), Dallas, TX, USA, Aug. 2019. [Abstract | pdf] Virtualization for Flexibility and Network-Aware on 5G Mobile Devices Kien Nguyen, Li Zhe-tao, Hiroo Sekiya Proc. IEEE COMPSAC 2019, Wisconsin, USA, July 2019. [Abstract | pdf] An Experimental Study on Buffer Size in Multipath TCP Communication Kien Nguyen, Hiroo Sekiya 15th International Conference on Multimedia Information Technology and Applications (MITA2019), Hochiminh City, Vietnam , June 2019. [Abstract | pdf] Throughput analysis for IEEE 802.11 multi-hop networks considering transmission rate Takeshi Kanematsu, Kien Nguyen, and Hiroo Sekiya 2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring), Apr. 2019. [Abstract | pdf] Frequency-controlled resonant converter with push-pull Class-E inverter Shohei Saito, Shohei Mita, Hiroyuki Onishi, Shingo Nagaoka, Takeshi Uematsu, and Hiroo Sekiya 2019 IEEE Applied Power Electronics Conference and Exposition (APEC2019), Mar. 2019. [Abstract | pdf] An evaluation of multipath TCP in lossy environment Kien Nguyen, Mirza Golam Kibria, Kentaro Ishizu, Fumihide Kojima, and Hiroo Sekiya Proc. IEEE Percom Workshop (PerFoT), Mar. 2019. [Abstract | pdf] Accurate analytical model of saturated throughput of the IEEE 802.11p EDCA Shintaro Ikuma, Kien Nguyen, and Hiroo Sekiya 2019 International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'19), pp.542-545, Mar. 2019. [Abstract | pdf]

Performance Evaluation of Multipath-TCP Congestion Controls in Virtual Wi-Fi System (in Japanese) Jingwei LIU, Kien NGUYEN, and Hiroo SEKIYA Technical Committee on Communication Quality, Nov. 2019. [Abstract | pdf] An Investigation of Wi-Fi Bufferbloat Using a Wireless Emulator Do Thi Thu Hien, Thanh Duc Ngo, Duy-Dinh Le, Hiroo Sekiya, Van-Hau Pham, Kien Nguyen IEICE Society 2019, BS-4-12, Osaka, Japan, Sept. 2019. [Abstract | pdf] A Research on End Devices’ Network Softwarization Kien Nguyen, Hiroo Sekiya IEICE Society 2019, BS-4-18, Osaka, Japan, Sept. 2019. [Abstract | pdf] Design of outphasing class-D ZVS amplifier (in Japanese) Tatsuki OHSATO†, Xiuqin WEI, Kien NGUYEN, and Hiroo SEKIYA Technical Committee on Semiconductor Power Converter IEEJ Industry Applications Society, July 2019. [Abstract | pdf] Performance and Unfairness Analyses in Dense Wi-Fi Networks under Presence of Capture Effect (in Japanese) Takeshi Kanematsu, Yuto Yoshida, Kien Nguyen, and Hiroo Sekiya IEICE Technical Report SeMI 2019-20, vol.119, no.110, pp.13-18, July 2019. [Abstract | pdf] A Research on Multipath TCP Initialization in Wireless Networks Kien Nguyen, Hiroo Sekiya IEICE CQ, Hiroshima, May 2019. [Abstract | pdf] Proposal of Load-independent Class-E^−1 Inverter (in Japanese) Yuta Ozawa, Xiuqin Wei, and Hiroo Sekiya Technical Committee on Energy Engineering in Electronics and Communications, vol.118, no.387, pp.43-48, Jan. 2019. [Abstract | pdf] Analysis and design of Class Φ driver circuit without resonance circuit (in Japanese) Hanako Matsubara, Hiroo Sekiya Technical Committee on Energy Engineering in Electronics and Communications, vol.118, no.387, pp.37-41, Jan. 2019. [Abstract | pdf] Inductor optimization software by Ap method and Kg method (in Japanese) Akane Iwasaki, Hiroo Sekiya Technical Committee on Energy Engineering in Electronics and Communications, vol.118, no.387, pp.31-36, Jan. 2019. [Abstract | pdf] Analysis and design of wireless power transfer system based on class-D^2 DC-DC converter (in Japanese) Shohei Mita, Hiroo Sekiya Technical Committee on Energy Engineering in Electronics and Communications, vol.118, no.387, pp.25-30, Jan. 2019. [Abstract | pdf] The Influence on Network Characteristics by CW Value and Proposal of Analytical Expression in the IEEE 802.11p EDCA (in Japanese) Shintaro Ikuma, Kien Nguyen, and Hiroo Sekiya Technical Committee on Ambient intelligence and Sensor Networks, vol.118, no.428, pp.95-100, Jan. 2019. [Abstract | pdf] Wireless neural network coupled by infrared communications Kazuki Matsumoto, Hiroyuki Torikai, Kien Nguyen and Hiroo Sekiya 7th Japan-Korea Joint Workshop on Complex Communication Sciences (JKCCS' 19), Jan. 2019. [Abstract | pdf] A network calculus model for dual connectivity communication Kien Nguyen, and Hiroo Sekiya 7th Japan-Korea Joint Workshop on Complex Communication Sciences (JKCCS' 19), Jan. 2019. [Abstract | pdf]