Speech enhancement based on the dominant classification between speech and noise using feature data in spectrogram of observation signal (in Japanese) Yukihiro Nomura, Jianming Lu, Hiroo Sekiya, Takashi Yahagi IEEJ Transactions on Electronics, Infomation and Systems, vol.124-C, no.11, pp.2310-2319, Nov. 2004. [Abstract | pdf] A method of impulse noise removal using level detection (in Japanese) Noritaka Yamashita, Munenori Ogura, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi IEEJ Transactions on Electronics, Infomation and Systems, vol.124, no.11, pp.2378-2379, Nov. 2004. [Abstract | pdf] Design of phase-controlled class E inverter with asymmetric circuit configuration Daisuke Kawamoto, Hiroo Sekiya, Hirotaka Koizumi, Iwao Sasase, and Shinsaku Mori IEEE Transactions on Circuits and Systems Part II: express Briefs, vol.51, no.10, pp.523-528, Oct. 2004. [Abstract | pdf] Novel design procedure for MOSFET class E oscillator Hiroyuki Hase, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, vol.E87-A, no.9, pp.2241-2247, Sept. 2004. [Abstract | pdf] Pipelined successive interference cancellation with parallel processing for a DS/CDMA system (in Japanese) Toshimichi Yokote, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, vol.J87-A, no.9, pp.1254-1256, Sept. 2004. [Abstract | pdf] FM/PWM control scheme in class DE inverter Hiroo Sekiya, Hirotaka Koizumi, Shinsaku Mori, Iwao Sasase, Jianming Lu, and Takashi Yahagi IEEE Transactions on Circuits and Systems Part I: Regular Papers, vol.51, no.7, pp.1250-1260, July 2004. [Abstract | pdf] A compensating method based on SOM for nonlinear distortion in 16-QAM-OFDM system Xiaoqiu Wang, Hua Lin, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, vol.E87-A, no.6, pp.1641-1644, June 2004. [Abstract | pdf]

Design procedure for generalized class E amplifiers with implicit circuit equations Hiroo Sekiya, Yuichi Tanji, Jianming Lu, and Takashi Yahagi 2004 International Symposium on Nonlinear Theory and its Appication (NOLTA2004), pp.303 - 306, Nov. 2004. [Abstract | pdf] A MAC protocol for broadcasting in wireless networks of ad hoc nodes with heterogeneous power capabilities Toshihide Fujiwara, Hiroo Sekiya, Masaki Bandai, Toshimichi Yokote, Jianming Lu, and Takashi Yahagi 2004 International Symposium on Information Theory and its Applications (ISITA2004), Oct. 2004. [Abstract | pdf] Novel design procedure forMOSFET class E oscillator Hiroyuki Hase, Hiroo Sekiya, Jianming Lu, Takashi Yahagi The 47th 2004 IEEE International Midwest Symposium on Circuits and Systems (MWSCAS2004), July 2004. [Abstract | pdf] A compensating method based on SOM for nonlinear distortion in 16 QAM-OFDM system Xiaoqiu Wang, Jianming Lu, Hiroo Sekiya and Takashi Yahagi 2004 IEEE International Conference on Multimedia and Expo (ICME2004), vol.3, pp.1899-1902, June 2004. [Abstract | pdf] A compensating method based on SOM for nonlinear distortion in 64-QAM-OFDM system Xiaoqiu Wang, Hua Lin, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi 2004 RISP International Workshop on Nonlinear Circuits and Signal Processing(NCSP2004), pp.21-24, Mar. 2004. [Abstract | pdf] Channel estimation for nonlinear OFDM system using diagonal scattered pilots Xiaoqiu Wang, Hua Lin, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi 2004 RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP2004), pp.29-32, Mar. 2004. [Abstract | pdf] Speech/noise-dominant decision regardless of SNR for speech enhancemen Yukihiro Nomura, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi 2004 RISP International Workshop on Nonlinear Circuits and Signal Processing(NCSP2004), pp.415-418, Mar. 2004. [Abstract | pdf] Noise removal for degraded images with mixed gaussian and impulse noises using trimmed filters and neural networks Noritaka Yamashita, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi 2004 RISP International Workshop on Nonlinear Circuits and Signal Processing(NCSP2004), pp.125-128, Mar. 2004. [Abstract | pdf] A simple algorithm of blind source separation for noisy images Xiaowei Zhang, Nuo Zhang, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi 2004 RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP2004), pp.201-204, Mar. 2004. [Abstract | pdf] Overcomplete blind source separation by a simplified algorithm Nuo Zhang, Jianming Lu, Xiaowei Zhang, Hiroo Sekiya, and Takashi Yahagi 2004 RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP2004), pp.205-208, Mar. 2004. [Abstract | pdf] Application of wavelet transform in in-line solder paste inspection Huiqin Jiang, Takashi Yahagi, Jianming Lu, and Hiroo Sekiya 2004 RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP2004), pp.217-220, Mar. 2004. [Abstract | pdf] Application of wavelet transform in denoising for medical CR images Huiqin Jiang, Takashi Yahagi, Jianming Lu, and Hiroo Sekiya 2004 RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP2004), pp.233-236, Mar. 2004. [Abstract | pdf]

A MAC protocol for broadcasting in wireless networks of ad hoc nodes with heterogeneous power capabilities (in Japanese) Toshihide Fujiwara,Hiroo Sekiya, Masaki Bandai, Toshimichi Yokote, Jianming Lu, and Takashi Yahagi The 27th Symposium on Information Theory and Its Applications (SITA2004), pp.751-754, Dec. 2004. [Abstract | pdf] Speech enhancement based on iterative wavelet denoising (in Japanese) Hideaki Tozawa, Yukihiro Nomura, Jianming Lu, Hiroo Sekiya, Takashi Yahagi 47th Proceedings of the Japan Joint Automatic Control Conference, p.527, Nov. 2004. [Abstract | pdf] Speech/noise-dominant decision regardless of SNR (in Japanese) Yukihiro Nomura, Jianming Lu, Hiroo Sekiya, Takashi Yahagi 47th Proceedings of the Japan Joint Automatic Control Conference, p.526, Nov. 2004. [Abstract | pdf] Random-valued impulse noise detector by shape windows (in Japanese) Noritaka Yamashita, Munenori Ogura, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi 19th SIP Symposium, no.C6-3, Nov. 2004. [Abstract | pdf] Noise removal for degraded images using trimmed filters and neural filters (in Japanese) Noritaka Yamashita, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi 47th Proceedings of the Japan Joint Automatic Control Conference, Nov. 2004. [Abstract | pdf] Design of MOSFET class E oscillator with any design specification (in Japanese) Hiroyuki Hase, Hiroo Sekiya, Jianming Lu, Takashi Yahagi The 17th Workshop on Circuits and Systems in Karuizawa, pp.1-6, Apr. 2004. [Abstract | pdf] Novel design method for electronic circuits with periodic waveforms (in Japanese) Hiroo Sekiya, Yuichi Tanji, Jianming Lu, and Takashi Yahagi The 17th Workshop on Circuits and Systems in Karuizawa, Apr. 2004. [Abstract | pdf] Speech/noise-dominant decision regardless of SNR for speech enhancement (in Japanese) Yukihiro Nomura, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi IEICE Technical Committee on Engineering Acoustics, pp.29-34, Apr. 2004. [Abstract | pdf] Novel design method for electronic circuits with periodic waveforms (in Japanese) Hiroo Sekiya, Yuichi Tanji, Jianming Lu, and Takashi Yahagi IEICE Technical Committee on Nonlinear Problems, vol.NLP2003-185, pp.49-54, Mar. 2004. [Abstract | pdf] A Design of MOSFET class E oscillator with any design specification (in Japanese) Hiroyuki Hase, Hiroo Sekiya, Jianming Lu, and Takashi Yahagi IEICE Technical Committee on Nonlinear Problems, vol.NLP2003-152, Jan. 2004. [Abstract | pdf] A method of impulse noise removal using noise position information (in Japanese) Munenori Ogura, Noritaka Yamashita, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi S-FI2004, pp.95-98, Jan. 2004. [Abstract | pdf] A random-valued impulse noise detector by using level detection (in Japanese) Munenori Ogura, Noritaka Yamashita, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi SICE DAS04, pp.107-112, Jan. 2004. [Abstract | pdf]