Methods of Traffic Flow Measurement Using Spatlo-Temporal Image. - Hiroyasu Taniguchi; Takahiro Nakamura; Haruki Furusawa (ICIP (4), 1999)

Fingerprint Image Enhancement using a Parallel Ridge Filter. - Takahiro Nakamura; Miwako Hirooka; Hideto Fujiwara; Kazuhiko Sumi (ICPR (1), 2004)

Sound source tracking with directivity pattern estimation using a 64 ch microphone array. - Kazuhiro Nakadai; Hirofumi Nakajima; Kentaro Yamada; Yuji Hasegawa; Takahiro Nakamura; Hiroshi Tsujino (IROS, 2005)

A two-layer model for behavior and dialogue planning in conversational service robots. - Mikio Nakano; Yuji Hasegawa; Kazuhiro Nakadai; Takahiro Nakamura; Johane Takeuchi; Toyotaka Torii; Hiroshi Tsujino; Naoyuki Kanda; Hiroshi G. Okuno (IROS, 2005)

Fingerprint Authentication Device Based on Optical Characteristics Inside a Finger. - Emiko Sano; Takuji Maeda; Takahiro Nakamura; Masahiro Shikai; Koji Sakata; Masahito Matsushita; Koichi Sasakawa (CVPR Workshops, 2006)

Robust Tracking of Multiple Sound Sources by Spatial Integration of Room And Robot Microphone Arrays. - Kazuhiro Nakadai; Hirofumi Nakajima; Masamitsu Murase; Satoshi Kaijiri; Kentaro Yamada; Takahiro Nakamura; Yuji Hasegawa; Hiroshi G. Okuno; Hiroshi Tsujino (ICASSP (4), 2006)

24-GHz 1-V pseudo-stacked mixer with gain-boosting technique. - Nobuhiro Shiramizu; Toru Masuda; Takahiro Nakamura; Katsuyoshi Washio (ESSCIRC, 2008)

Composite feature modeling and retrieval. - Jin Hou; Dengsheng Zhang; Zeng Chen; Xuerong Xu; Takahiro Nakamura (ICARCV, 2008)

A 20-GHz 1-V VCO with dual-transformer configuration and a pseudo-static divider on self-stabilized concept. - Takahiro Nakamura; Toru Masuda; Nobuhiro Shiramizu; Akihiro Nakamura; Katsuyoshi Washio (ESSCIRC, 2009)

A 59GHz push-push VCO with 13.9GHz tuning range using loop-ground transmission line for a full-band 60GHz transceiver. - Takahiro Nakamura; Toru Masuda; Katsuyoshi Washio; Hiroshi Kondoh (ISSCC, 2009)

Low-power fully-integrated K-band transceiver using transformer direct-stacking/connecting and balun signal-combining techniques. - Nobuhiro Shiramizu; Akihiro Nakamura; Takahiro Nakamura; Toru Masuda; Katsuyoshi Washio (ESSCIRC, 2010)

A digital PLL with two-step closed-locking for multi-mode/multi-band SAW-less transmitter. - Keisuke Ueda; Toshiya Uozumi; Ryo Endo; Takahiro Nakamura; Tetsuya Heima; Hisayasu Sato (CICC, 2012)

A Δ∑-modulator-less digitally-controlled oscillator using fractional capacitors for GSM/EDGE transmitter. - Takahiro Nakamura; Takayasu Norimatsu; Toshiya Uozumi; Keisuke Ueda; Taizo Yamawaki (ESSCIRC, 2012)

A Push-Push VCO With 13.9-GHz Wide Tuning Range Using Loop-Ground Transmission Line for Full-Band 60-GHz Transceiver. - Takahiro Nakamura; Toru Masuda; Katsuyoshi Washio; Hiroshi Kondoh (IEEE J. Solid State Circuits, 2012)

High performance PIN Ge photodetector and Si optical modulator with MOS junction for photonics-electronics convergence system. - Junichi Fujikata; Masataka Noguchi; Makoto Miura; Masashi Takahashi; Shigeki Takahashi; Tsuyoshi Horikawa; Yutaka Urino; Takahiro Nakamura; Yasuhiko Arakawa (ASP-DAC, 2013)

High density optical interconnects integrated with lasers, optical modulators and photodetectors on a single silicon chip. - Yutaka Urino; Tsuyoshi Horikawa; Takahiro Nakamura; Yasuhiko Arakawa (OFC/NFOEC, 2013)

Silicon photonics for next generation system integration platform. - Yasuhiko Arakawa; Takahiro Nakamura; Yutaka Urino; Tomoyuki Fujita (IEEE Commun. Mag., 2013)

A Wide-Tuning-Range VCO with Small VCO-Gain Variation for Multi-Band W-CDMA RFIC. - Takahiro Nakamura; Tomomitsu Kitamura; Nobuhiro Shiramizu; Toru Masuda (IEICE Trans. Electron., 2013)

Advances in High-Density Inter-Chip Interconnects with Photonic Wiring. - Yutaka Urino; Yoshiji Noguchi; Nobuaki Hatori; Masashige Ishizaka; Tatsuya Usuki; Junichi Fujikata; Koji Yamada; Tsuyoshi Horikawa; Takahiro Nakamura; Yasuhiko Arakawa (IEICE Trans. Electron., 2013)

Demonstration of 25-Gbps optical data links on silicon optical interposer using FPGA transceiver. - Daisuke Okamoto; Yutaka Urino; Takeshi Akagawa; Suguru Akiyama; Takeshi Baba; Tatsuya Usuki; Makoto Miura; Junichi Fujikata; Takanori Shimizu; Makoto Okano; Nobuaki Hatori; Masashige Ishizaka; et al. (ECOC, 2014)

First demonstration of athermal silicon optical interposers with quantum dot lasers operating up to 125 °C. - Yutaka Urino; Nobuaki Hatori; Takeshi Akagawa; Takanori Shimizu; Makoto Okano; Masashige Ishizaka; Tsuyoshi Yamamoto; Hideaki Okayama; Yosuke Onawa; Hiroyuki Takahashi; Daisuke Shimura; Hiroki Yaegashi; et al. (ECOC, 2014)

A SAW-less LTE transmitter with high-linearity modulator using BPF-based I/Q summing. - Takahiro Nakamura; Naoki Kitazawa; Kaoru Kohira; Hiroki Ishikuro (ESSCIRC, 2014)

Demonstration of over 1000-channel hybrid integrated light source for ultra-high bandwidth interchip optical interconnection. - Takanori Shimizu; Makoto Okano; Hiroyuki Takahashi; Nobuaki Hatori; Masashige Ishizaka; Tsuyoshi Yamamoto; Masahiko Mori; Tsuyoshi Horikawa; Yutaka Urino; Takahiro Nakamura; Yasuhiko Arakawa (OFC, 2014)

Optical I/O core transmitter with high tolerance to optical feedback using quantum dot laser. - Kenji Mizutani; Kenichiro Yashiki; Mitsuru Kurihara; Yasuyuki Suzuki; Yasuhiko Hagihara; Nobuaki Hatori; Takanori Shimizu; Yutaka Urino; Takahiro Nakamura; Kazuhiko Kurata; Yasuhiko Arakawa (ECOC, 2015)

A 50-Gb/s NRZ-modulated optical transmitter based on a DFB-LD and a 0.18-µm SiGe BiCMOS LD driver. - Takashi Takemoto; Yasunobu Matsuoka; Yoshikazu Sugiyama; Hidenori Yonezawa; Hiroki Yamashita; Koichiro Adachi; Takahiro Nakamura; Etsuko Nomoto; Kouji Nakahara; Hideo Arimoto; Kenichi Osada; Tatemi Ido (OFC, 2015)

Bit error rate analysis of a silicon optical interposer using its equivalent circuit. - Daisuke Okamoto; Takeshi Akagawa; Tatsuya Usuki; Junichi Fujikata; Suguru Akiyama; Yutaka Urino; Takahiro Nakamura (IEICE Electron. Express, 2015)

A 50-Gb/s Optical Transmitter Based on a 25-Gb/s-Class DFB-LD and a 0.18-µm SiGe BiCMOS LD Driver. - Takashi Takemoto; Yasunobu Matsuoka; Hiroki Yamashita; Takahiro Nakamura; Yong Lee; Hideo Arimoto; Tatemi Ido (IEICE Trans. Electron., 2016)

Fingertip-Size Optical Module, "Optical I/O Core", and Its Application in FPGA. - Takahiro Nakamura; Kenichiro Yashiki; Kenji Mizutani; Takaaki Nedachi; Junichi Fujikata; Masatoshi Tokushima; Jun Ushida; Masataka Noguchi; Daisuke Okamoto; Yasuyuki Suzuki; Takanori Shimizu; Koichi Takemura; et al. (IEICE Trans. Electron., 2019)

High-Speed and 16 λ-WDM Operation of Ge/Si Electro-Absorption Modulator for C-Band Spectral Regime. - Junichi Fujikata; Masataka Noguchi; Seok-Hwan Jeong; Yosuke Onawa; Daisuke Shimura; Kazuki Kawashita; Riku Katamawari; Hideaki Okayama; Shigeki Takahashi; Hideki Ono; Hiroyuki Takahashi; Hiroki Yaegashi; et al. (OFC, 2020)

Highlights of 10-years of Research in a Japanese Si Photonics Project. - Yasuhiko Arakawa; Takahiro Nakamura; Kazuhiko Kurata (OFC, 2022)