Tadashi Takagi

Suguru Kameda, Hiroshi Oguma, Noboru Izuka, Yasuyoshi Asano, Yoshiharu Yamazaki, Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchi: Measured Downlink Throughput Performance of MBWA System in Urban Area. IEICE Transactions 96-B(1): 329-334 (2013)

Suguru Kameda, Hiroshi Oguma, Noboru Izuka, Fumihiro Yamagata, Yasuyoshi Asano, Yoshiharu Yamazaki, Shoichi Tanifuji, Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchi: Proposal of Heterogeneous Wireless Network with Handover in Application Layer: Feasibility Study Based on Field Trial Results. IEICE Transactions 95-B(4): 1152-1160 (2012)

Noriharu Suematsu, Satoshi Yoshida, Shoichi Tanifuji, Suguru Kameda, Tadashi Takagi, Kazuo Tsubouchi: A 60 GHz-Band 3-Dimensional System-in-Package Transmitter Module with Integrated Antenna. IEICE Transactions 95-C(7): 1141-1146 (2012)

Satoshi Yoshida, Shoichi Tanifuji, Suguru Kameda, Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchi: 60-GHz Band Copper Ball Vertical Interconnection for MMW 3-D System-in-Package Front-End Modules. IEICE Transactions 95-C(7): 1276-1284 (2012)

Yuji Miyake, Fumihiro Yamagata, Hiroshi Oguma, Noboru Izuka, Suguru Kameda, Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchi: Hybrid single-carrier and multi-carrier system: Evaluation of throughput with inter-cell interference. PIMRC 2012: 2389-2394

Suguru Kameda, Hiroshi Oguma, Noboru Izuka, Yasuyoshi Asano, Yoshiharu Yamazaki, Kazuhiro Komatsu, Shoichi Tanifuji, Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchi: Coverage estimation of uplink 64 QAM signal up to 20 MHz bandwidth based on field trial results: coverage issue of broadband uplink signal. WPMC 2011: 1-5

Yuji Miyake, Kazumasa Kobayashi, Kazuhiro Komatsu, Shoichi Tanifuji, Hiroshi Oguma, Noboru Izuka, Suguru Kameda, Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchi: Hybrid single-carrier and multi-carrier system: Widening uplink coverage with optimally selecting SDM or join FDE/antenna diversity. WPMC 2011: 1-5

Tuan Thanh Ta, Suguru Kameda, Tadashi Takagi, Kazuo Tsubouchi: A 5 GHz Band Low Noise and Wide Tuning Range Si-CMOS VCO with a Novel Varactors Pair Circuit. IEICE Transactions 93-C(6): 755-762 (2010)

Shunsuke Tomita, Yuji Miyake, Ikuro Kashiwamura, Kazuhiro Komatsu, Ngoc Hao Tran, Hiroshi Oguma, Noboru Izuka, Suguru Kameda, Tadashi Takagi, Kazuo Tsubouchi: Hybrid single-carrier and multi-carrier system: Improving uplink throughput with optimally switching modulation. PIMRC 2010: 2438-2443

Hiroshi Oguma, Suguru Kameda, Tadashi Takagi, Kazuo Tsubouchi, Noboru Izuka, Yasuyoshi Asano, Yoshiharu Yamazaki: Coverage Estimation of Uplink 16 QAM Signal up to 20 MHz Bandwidth Based on Field Trial Results of FH-OFDMA System. WCNC 2010: 1-6

Hiroshi Oguma, Suguru Kameda, Tadashi Takagi, Kazuo Tsubouchi, Noboru Izuka, Yasuyoshi Asano, Yoshiharu Yamazaki: Uplink throughput performance of FH-OFDMA improved by 16 QAM: Effect estimation and validation in MBWA system field trial. PIMRC 2009: 2050-2054

Ikuro Kashiwamura, Shunsuke Tomita, Kazuhiro Komatsu, Ngoc Hao Tran, Hiroshi Oguma, Noboru Izuka, Suguru Kameda, Tadashi Takagi, Kazuo Tsubouchi: Investigation on single-carrier and multi-carrier hybrid system for uplink. PIMRC 2009: 3188-3192

Hiroyuki Nakase, Hiroshi Oguma, Suguru Kameda, Tadashi Takagi, Kazuo Tsubouchi, Mari Ochiai, Yukimasa Nagai, Akinori Fujimura, Yoji Isota: Improvement of bit error rate using channel interleaving for channel binding WLAN prototype. PIMRC 2008: 1-5

Valentin Gheorghiu, Suguru Kameda, Tadashi Takagi, Kazuo Tsubouchi, Fumiyuki Adachi: Implementation of Single Carrier Packet Transmission with Frequency Domain Equalization. VTC Fall 2008: 1-5

Kenichi Horiguchi, Satoru Ishizaka, Masatoshi Nakayama, Ryoji Hayashi, Yoji Isota, Tadashi Takagi: Efficiency Enhancement of a Digital Predistortion Doherty Amplifier Transmitter Using a Virtual Open Stub Technique. IEICE Transactions 90-C(9): 1670-1677 (2007)

Mitsuhiro Shimozawa, Kenichi Maeda, Eiji Taniguchi, Keiichi Sadahiro, Takayuki Ikushima, Tamotsu Nishino, Noriharu Suematsu, Kenji Itoh, Yoji Isota, Tadashi Takagi: An Even Harmonic Quadrature Mixer with a Simple Filter Configuration and an Integrated LTCC Module for W-CDMA Direct Conversion Receiver. IEICE Transactions 89-C(4): 473-481 (2006)

Kenji Kawakami, Hiroshi Ikematsu, Koichi Matsuo, Naohisa Uehara, Moriyasu Miyazaki, Tadashi Takagi: A Millimeter-Wave Pulse Transmitter with a Harmonic Mixer. IEICE Transactions 88-C(10): 1947-1951 (2005)