Resonant dc/dc converter with class E oscillator Hiroyuki Hase, Hiroo Sekiya, Jianming Lu, Takashi Yahagi IEEE Transactions on Circuits and Systems Part I: Regular Papers, vol.53, no.9, pp.2025 - 2035, Sept. 2006. [Abstract | pdf] A MAC protocol using busy tone in wireless networks of ad hoc nodes with heterogeneous power capabilitiese (in Japanese) Toshihide Fujiwara, Hiroo Sekiya, Masaki Bandai, Jianming Lu, and Takashi Yahagi IPSJ Journal, vol.47, no.9, pp.2815-2829, Sept. 2006. [Abstract | pdf] Steady-state behavior of class DE amplifier under non optimum?@conditions Takahiro Negishi, Hiroyuki Hase, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi Journal of Signal Processing, vol.10, no.4, pp.247-250, July 2006. [Abstract | pdf] Musical noise reduction by spectral subtraction using morphological process (in Japanese) Yukihiro Nomura, Hideaki Tozawa, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi IEICE Transactions on Information and Systems, vol.J89-D, no.5, pp.991-1000, May 2006. [Abstract | pdf] Investigation of class E amplifier with nonlinear capacitance for any output Q and finite dc-feed inductance Hiroo Sekiya, Yoji Arifuku, Hiroyuki Hase, Jianming Lu, and Takashi Yahagi IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, vol.E89–A, no.4, pp.873-881, Apr. 2006. [Abstract | pdf] A random-valued impulse noise detector by using level detection (in Japanese) Noritaka Yamashita, Munenori Ogura, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, vol.J89-A, no.4, pp.312-314, Apr. 2006. [Abstract | pdf] Phase control for resonant dc/dc converter with class DE inverter and class E rectifier Hiroo Sekiya, Shuichi Nemoto, Jianming Lu, and Takashi Yahagi IEEE Transactions on Circuits and Systems Part I: Regular Papers, vol.53, no.1, pp.254-263, Feb. 2006. [Abstract | pdf] Improvement of speech enhancement using speech/noisedominant decision independent of SNR (in Japanese) Yukihiro Nomura, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi Acoustical Science and Technology, vol.62, no.1, pp.12-22, Jan. 2006. [Abstract | pdf]

Use minimum graph cut based on hybrid algorithm for motion segmentation Yuzhen Li, Jinming Lu, Mohamed Ghoneim, Takashi Yahagi, and Hiroo Sekiya 2006 IEEE International Symposium On Intelligent Signal Processing and Communication Systems (ISPACS2006), pp.427-430, Dec. 2006. [Abstract | pdf] Post-processing for restoring edges and removing artifacts of low bit rates wavelet-based image Du Ke, Jianming Lu, Hiroo Sekiya, Yan Sun, and Takashi Yahagi 2006 IEEE International Symposium On Intelligent Signal Processing and Communication Systems (ISPACS2006), pp.943-946, Dec. 2006. [Abstract | pdf] An adaptive sliding mode control using simple adaptive control for a class of SISO nonlinear systems with bounded-input bounded-output and bounded nonlinearity Muhammad Yasser, Agus Trisanto, Ayman Haggag, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi The 45th IEEE Conference on Decision and Control (45th CDC), pp.1599-1604, Dec. 2006. [Abstract | pdf] Design of class DE inverter with band-pass filter Motoki Katayama, Hiroyuki Hase, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi The 32nd Annual Conference of the IEEE Industrial Electronics Society (IECON2006), pp.2723-2728, Nov. 2006. [Abstract | pdf] Effects of characteristics of band-pass filter to operation of class DE inverter Motoki Katayama, Hiroyuki Hase, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi The 2006 International Symposium on Nonlinear Theory and its Applications (NOLTA2006), pp.523-526, Sept. 2006. [Abstract | pdf] An application of adaptive sliding mode control using simple adaptive control for SISO magnetic levitation system Muhammad Yasser, Agus Trisanto, Ayman Haggag, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi The Indonesia-Japan Joint Scientific Symposium 2006 (IJJSS2006), Sept. 2006. [Abstract | pdf] Operation of class DE amplifier outside optimum condition Hiroo Sekiya, Takahiro Negishi, Tadashi Suetsugu, and Takashi Yahagi 2006 IEEE International Symposium on Circuits and Systems (ISCAS2006), pp.241-244, May 2006. [Abstract | pdf] Adaptive sliding mode control using simple adaptive control for SISO nonlinear systems Muhammad Yasser, Agus Trisanto, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi The 2006 IEEE International Symposium on Circuits and Systems (ISCAS2006), pp.2153-2156, May 2006. [Abstract | pdf] Blind dereverberation using correlation coefficients considering periodicity of voiced speech Tatsuhiro Iida, Yukihiro Nomura, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi 2006 IEEE International Symposium on Circuits and Systems (ISCAS2006), pp.5539-5542, May 2006. [Abstract | pdf] Impulse noise detector using mathematical morphology Yoshinori Ito, Takanori Sato, Noritaka Yamashita, Jianming Lu, Hiroo Sekiya and Takashi Yahagi 2006 IEEE International Symposium on Circuits and Systems (ISCAS2006), pp.4261-4264, May 2006. [Abstract | pdf] Steady-state behavior of class DE amplifier outside optimum conditions Takahiro Negishi, Hiroyuki Hase, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi 2006 RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP2006), pp.263-266, Mar. 2006. [Abstract | pdf] Phase controlled class E^2 dc/dc converter with single RF choke core Tsutomu Asano, Hiroyuki Hase, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi 2006 RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP2006), pp.267-270, Mar. 2006. [Abstract | pdf] Throughput analysis on string multi-hop networks with multiple flow Toshihide Fujiwara, Hiroo Sekiya, Kazuteru Namba, Jianming Lu, Takashi Yahagi, and Shiro Sakata 2006 RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP2006), pp.417-420, Mar. 2006. [Abstract | pdf] Isolated word recognition using very simple recurrent neural network plus and noise compensation LPC analysis Yasuhiro Takahashi, Yukihiro Nomura, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi 2006 RISP International Workshop on Nonlinear Circuit and Signal Processing (NCSP2006), Mar. 2006. [Abstract | pdf] Impulse noise detector using absolute deviation and spatial relations between the color components for color images Takanori Sato, Noritaka Yamashita, Yoshinori Ito, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi 2006 RISP International Workshop on Nonlinear Circuit and Signal Processing (NCSP2006), Mar. 2006. [Abstract | pdf]

Analysis of class DE amplifire with nonliear capacitance (in Japanese) Hiroo Sekiya, Takayuki Watanabe, Tadashi Suetsugu, and Takashi Yahagi IEICE Technical Committee on Nonlinear Problems, pp.39-44, Dec. 2006. [Abstract | pdf] A method of impulse noise detection by using Laplacian-Gaussian Filter (in Japanese) Noritaka YAMASHITA, Hiroo SEKIYA?CJianming LU, and Takashi YAHAGI 21th SIP Symposium, Nov. 2006. [Abstract | pdf] QoS aware and fairness aware MAC protocol in multihop network (in Japanese) Masaki Matsumoto, Hiroo Sekiya, Jianming Lu, Shiro Sakata, and Takashi Yahagi IEICE Technical Committee on Information Networks, pp.7-12, June 2006. [Abstract | pdf] Unfairness among stations in Wireless LAN Mesh Networks (in Japanese) Niida Hiroyuki, Nokphalinh Thamnuvong, Fujiwara Toshihide, Sekiya Hiroo, Sakata Shiro, Yahagi Takashi, Yagyu Kengo, and Fujiwara Atsushi IEICE Technical Committee on Information Networks, pp.1-6, June 2006. [Abstract | pdf] Analysis of class DE ampifier outside optimum condition (in Japanese) Takahiro Negishi, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi The 19th Workshop on Circuits and Systems in Karuizawa, pp.319 - 324, Apr. 2006. [Abstract | pdf] Design of class DE amplifier with band pass filter (in Japanese) Motoki Katayama, Hiroyuki Hase, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi The 19th Workshop on Circuits and Systems in Karuizawa, pp.331-336, Apr. 2006. [Abstract | pdf] Exparimental invetigation of phase controlled class E^2 dc/dc converter (in Japanese) Tsutomu Asano, Hiroyuki Hase, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi IEICE Technical Committee on Nonlinear Problems, pp.123-128, Jan. 2006. [Abstract | pdf] Operation of class DE amplifier outside optimum conditions (in Japanese) Takahiro Negishi, Hiroyuki Hase, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi IEICE Technical Committee on Nonlinear Problems, pp.65-70, Jan. 2006. [Abstract | pdf] Multiuser detection with branch-and-bound-based algorithm using user grouping for synchronous CDMA (in Japanese) Yusuke Takano, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi IEICE Technical Committee on Radio Communication Systems, pp.167-172, Jan. 2006. [Abstract | pdf] A study on adaptive modulation method for transmit power allocated V-BLAST7 (in Japanese) Yudai Kotsuta, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi IEICE Technical Committee on Radio Communication Systems, pp.83-87, Jan. 2006. [Abstract | pdf] Analysis of throughput in string multi hop network (in Japanese) Toshihide Fujiwara, Hiroo Sekiya, Kazuteru Namba, Jianming Lu, Takashi Yahagi, and Shiro Sakata IEICE Technical Committee on Radio Communication Systems, pp.47-52, Jan. 2006. [Abstract | pdf] Impulse noise detector by using Laplacian-Gaussian filter (in Japanese) Noritaka Yamashita, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi IEICE Technical Committee on Signal Processing, pp.73-78, Jan. 2006. [Abstract | pdf]