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Yohtaro Umeda
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2020 – today
- 2023
- [j12]Keisuke Kawahara
, Yohtaro Umeda, Kyoya Takano
, Shinsuke Hara:
A Compact Fully-Differential Distributed Amplifier with Coupled Inductors in 0.18-µm CMOS Technology. IEICE Trans. Electron. 106(11): 669-676 (2023) - [j11]Keisuke Kawahara
, Yohtaro Umeda, Kyoya Takano
, Shinsuke Hara
:
A 0.0058-mm2 Inductor-Less CMOS Active Balun With Gain and Phase Errors Within -0.1 ± 0.2 dB and -0.18 ± 1.17° From DC to 8 GHz. IEEE Trans. Circuits Syst. I Regul. Pap. 70(6): 2317-2330 (2023) - [c27]Sho Okii, Shinsuke Hara, Akifumi Kasamatsu, Yohtaro Umeda, Kyoya Takano
:
39 - 67 GHz CMOS Multistage Power Amplifier With Two-Way Power Stage. ICICDT 2023: 61-63 - 2022
- [c26]Keisuke Kawahara
, Joe Sawada, Takumi Kamo, Yohtaro Umeda, Kyoya Takano
:
A 50 Gbps 49 mW CMOS Analog Multiplexer for a DAC Bandwidth Tripler. RWS 2022: 125-127 - 2021
- [c25]Shinsuke Hara, Ruibing Dong, Sangyeop Lee, Kyoya Takano
, Naoya Toshida, Satoru Tanoi, Tatsuo Hagino, Mohamed H. Mubarak, Norihiko Sekine, Issei Watanabe, Akifumi Kasamatsu, Kunio Sakakibara
, Shunichi Kubo, Satoshi Miura, Yohtaro Umeda, Takeshi Yoshida, Shuhei Amakawa, Minoru Fujishima
:
A 76-Gbit/s 265-GHz CMOS Receiver. A-SSCC 2021: 1-3 - [c24]Ryo Kabeya, Yohtaro Umeda, Kyoya Takano
:
Frequency-Interleaved ADC with RF Equivalent Ideal Filter for Broadband Optical Communication Receivers. ICECS 2021: 1-5 - [c23]Yusuke Yokoi, Yusuke Takai, Joe Sawada, Takumi Kamo, Yohtaro Umeda, Kyoya Takano
:
DAC Bandwidth Tripler with 3: 1 Image-Rejection Analog Multiplexer. ICECS 2021: 1-6 - [c22]Keisuke Kawahara
, Yohtaro Umeda, Kyoya Takano
:
Design of an Area-Efficient Differential Distributed Amplifier Based on the Theory of Differential Transmission Lines. ISCAS 2021: 1-5 - [c21]Keisuke Kawahara
, Yohtaro Umeda, Kyoya Takano
:
A Broadband Active Balun with Inductor-Less Active Peaking and Imbalance Correction. MWSCAS 2021: 749-752
2010 – 2019
- 2018
- [j10]Jumpei Okumura, Yusuke Kozawa
, Yohtaro Umeda, Hiromasa Habuchi:
Hybrid PWM/DPAM Dimming Control for Digital Color Shift Keying Using RGB-LED Array. IEEE J. Sel. Areas Commun. 36(1): 45-52 (2018) - [c20]Tomoaki Morita, Yohtaro Umeda:
Comparison between Quadrature-modulation EPWM transmitters with a 90° and 180° hybrid in physical models. ICECS 2018: 647-648 - [c19]Yuto Tanaka, Yohtaro Umeda, Kyoya Takano
:
Power-amplifier-inserted Transversal Filter that Recovers Quantization Noise Power by CMOS Rectifier. ICECS 2018: 653-654 - 2017
- [c18]Ryota Kimoto, Yusuke Kozawa, Yohtaro Umeda, Hiromasa Habuchi:
Inverse pulse position modulation schemes for simultaneous visible light wireless information and power transfer. ITNAC 2017: 1-6 - [c17]Ryo Sakai, Tomoaki Morita, Yohtaro Umeda, Yusuke Kozawa:
Quadrature-modulation envelope-pulse-width-modulation transmission system using quadrature polarized waves. MWSCAS 2017: 1142-1145 - [c16]Yusuke Matsuda, Yusuke Kozawa, Yohtaro Umeda:
Cyclic mapping method for digital color shift keying with RGB-LED array. RWS 2017: 153-155 - 2016
- [c15]Fuminori Sato, Yusuke Kozawa, Yohtaro Umeda:
Performance Evaluation of Multiuser Digital Color Shift Keying Using Pseudo-Noise Code with On-Off Signaling. CANDAR 2016: 147-153 - [c14]Shunsuke Igata, Yusuke Kozawa, Yohtaro Umeda, Hiromasa Habuchi:
BER performance of digital color shift keying with target color control. ICSPCS 2016: 1-6 - 2015
- [c13]Naoya Murata, Hiroki Shimamoto, Yusuke Kozawa, Yohtaro Umeda:
Performance evaluation of Digital Colour Shift Keying for visible light communications. ICC Workshops 2015: 1374-1379 - [c12]Hiroki Shimamoto, Yusuke Kozawa, Yohtaro Umeda:
An experimental evaluation on EVM performance for 4-CSK(Color Shift Keying) using visible light with multiple full-color LEDs. RWS 2015: 206-208 - 2014
- [j9]Osamu Takyu, Yohtaro Umeda, Fumihito Sasamori, Shiro Handa:
Resource Block Assignment to Reduce Peak to Average Power Ratio in Multi-User OFDM. IEICE Trans. Commun. 97-B(8): 1689-1700 (2014) - [c11]Takashi Ozaki, Yusuke Kozawa, Yohtaro Umeda:
Variable multi-pulse PPM using new dimming control method for visible light communications. ISITA 2014: 80-84 - [c10]Takashi Ozaki, Yusuke Kozawa, Yohtaro Umeda:
Improved error performance of variable PPM for visible light communication. WPMC 2014: 259-264 - 2012
- [c9]Shota Fujioka, Michiaki Kojima, Hironori Izumi, Yohtaro Umeda, Osamu Takyu:
Power-amplifier-inserted transversal filter for application to pulse-density-modulation switching-mode transmitters. ISCIT 2012: 239-244 - [c8]Osamu Takyu, Yohtaro Umeda, Fumihito Sasamori, Shiro Handa:
Theoretical analysis of resource block assignment based on PAPR in two base station cellular system. PIMRC 2012: 155-160 - [c7]Osamu Takyu, Yohtaro Umeda:
Optimal subcarrier assignment for single cell multiuser OFDM system. RWS 2012: 335-338 - 2011
- [c6]Chinnapat Sertthin, Takeo Fujii, Osamu Takyu, Yohtaro Umeda, Tomoaki Ohtsuki
:
On Physical Layer Simulation Model for 6-Axis Sensor Assisted VLC Based Positioning System. GLOBECOM 2011: 1-5 - [c5]Chinnapat Sertthin, Tomoaki Ohtsuki
, Osamu Takyu, Takeo Fujii, Yohtaro Umeda:
A nearest transmitter classification method for VLC based positioning system. PIMRC 2011: 1259-1263 - [c4]Osamu Takyu, Yohsuke Seki, Takeo Yamasaki, Takeo Fujii, Yohtaro Umeda, Xiaoqiu Wang, Satoshi Konishi:
Fundamental study on adaptive ACK link control for downloading based on TCP connection in mobile wireless communication. PIMRC 2011: 2364-2368 - [c3]Osamu Takyu, Takahiro Saiwai, Takeo Fujii, Yohtaro Umeda:
Performance for MAC Level Channel Capacity in Cognitive Radio with Carrier Sense Multiple Access and Transmitting Power Control. VTC Fall 2011: 1-5 - 2010
- [j8]Osamu Takyu, Yohtaro Umeda, Masao Nakagawa:
Frequency Rotation for Suppressing Multipath Interference and Achieving Large Frequency Diversity in Uplink IFDMA. IEICE Trans. Commun. 93-B(5): 1284-1288 (2010) - [j7]Takeo Yamasaki, Osamu Takyu, Koichi Adachi, Yohtaro Umeda, Masao Nakagawa:
Phase Rotation for Constructing Uniform Frequency Spectrum in IFDMA Communication. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 93-A(12): 2672-2681 (2010)
2000 – 2009
- 2009
- [j6]Takeo Yamasaki, Osamu Takyu, Yohtaro Umeda:
Scattered Pilot Assisted Channel Estimation for IFDMA Uplink. IEICE Trans. Commun. 92-B(12): 3803-3814 (2009) - [c2]Mayumi Suzuki, Osamu Takyu, Yohtaro Umeda:
A study of cooperative communication with consideration of power loss caused by relay abortion. ISWCS 2009: 531-535 - 2008
- [c1]Osamu Takyu, Yohtaro Umeda, Masao Nakagawa:
Frequency rotation for suppressing path interference and achieving large frequency diversity in uplink IFDMA. PIMRC 2008: 1-5 - 2005
- [j5]Makoto Nakamura, Yuki Imai, Yohtaro Umeda, Jun Endo, Yuji Akatsu:
1.25-Gb/s burst-mode receiver ICs with quick response for PON systems. IEEE J. Solid State Circuits 40(12): 2680-2688 (2005)
1990 – 1999
- 1998
- [j4]Taiichi Otsuji
, Koichi Murata, Takatomo Enoki, Yohtaro Umeda:
An 80-Gbit/s multiplexer IC using InAlAs/InGaAs/InP HEMTs. IEEE J. Solid State Circuits 33(9): 1321-1327 (1998) - 1997
- [j3]Taiichi Otsuji
, Yuhki Imai, Eiichi Sano, Shunji Kimura
, Satoshi Yamaguchi, Mikio Yoneyama, Takatomo Enoki, Yohtaro Umeda:
40-Gb/s ICs for future lightwave communications systems. IEEE J. Solid State Circuits 32(9): 1363-1370 (1997) - 1996
- [j2]Makoto Nakamura, Yuhki Imai, Shoji Yamahata, Yohtaro Umeda:
Over-30-GHz limiting amplifier ICs with small phase deviation for optical communication systems. IEEE J. Solid State Circuits 31(8): 1091-1099 (1996) - 1994
- [j1]Tsugumichi Shibata, Shunji Kimura
, Hideaki Kimura, Yuhki Imai, Yohtaro Umeda, Yukio Akazawa:
A design technique for a 60 GHz-bandwidth distributed baseband amplifier IC module. IEEE J. Solid State Circuits 29(12): 1537-1544 (1994)
Coauthor Index
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