On the Efficient Decoding of Reed-Solomon Codes Based on GMD Criterion. - Kiyomichi Araki; Masayuki Takada; Masakatu Morii (ISMVL, 1992)

A BER floor simulation for the indoor multipath environment. - Jun-ichi Takada; Hideo Mochida; Kiyomichi Araki (PIMRC, 1997)

A study on source-channel encoding of AC coefficients for compressed video transmission with multicode DS/SS modulation. - Yukitoshi Sanada; Kiyomichi Araki (MMSP, 1998)

Overview of Elliptic Curve Cryptography. - Kiyomichi Araki; Takakazu Satoh; Shinji Miura (Public Key Cryptography, 1998)

Development of 4 × 4 MIMO-OFDM system and test measurement. - Kei Mizutani; Kei Sakaguchi; Jun-ichi Takada; Kiyomichi Araki (EUSIPCO, 2004)

Cooperative relaying scheme with space time code for multihop communications among single antenna terminals. - Tsuyoshi Miyano; Hidekazu Murata; Kiyomichi Araki (GLOBECOM, 2004)

Experimental and analytical investigation of MIMO channel capacity in an indoor line-of-sight (LOS) environment. - Hai-Yeow-Eugene Chua; Kei Sakaguchi; Kiyomichi Araki (PIMRC, 2004)

FPGA implementation of 4×4 MIMO test-bed for spatial multiplexing systems. - Mengfei Cui; Hidekazu Murata; Kiyomichi Araki (PIMRC, 2004)

A robust and low complexity adaptive algorithm for MIMO eigenmode transmission system under practical conditions. - See Ho Ting; Kei Sakaguchi; Kiyomichi Araki (PIMRC, 2004)

Performance of LDPC based turbo equalization for spatial multiplexing. - Takaaki Zakoji; Hidekazu Murata; Kiyomichi Araki (PIMRC, 2004)

On the practical performance of VBLAST. - See Ho Ting; Kei Sakaguchi; Kiyomichi Araki (IEEE Commun. Lett., 2004)

Measurements on Area Coverage of 5GHZ Band MIMO-OFDM System in Residential Home Environment. - Nguyen Dung Dao; Hai-Yeow-Eugene Chua; Kei Sakaguchi; Kiyomichi Araki; Hiroshi Iwai; Tsutomu Sakata; Koichi Ogawa (PIMRC, 2005)

An Effective IQ Imbalance Compensation Scheme for MIMO-OFDM Communication System. - Hiroyuki Kamata; Kei Sakaguchi; Kiyomichi Araki (PIMRC, 2005)

Differential quantization of eigenmodes for MIMO eigenmode transmission systems. - See Ho Ting; Kei Sakaguchi; Kiyomichi Araki (IEEE Commun. Lett., 2005)

QPSK Impulse Signal Transmission for Ultra Wide Band Communication Systems in Multipath Channel Environments. - Chaiyaporn Khemapatapan; Watit Benjapolakul; Kiyomichi Araki (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005)

MIMO Channel Capacity in an Indoor Line-Of-Sight (LOS) Environment. - Kei Sakaguchi; Hai-Yeow-Eugene Chua; Kiyomichi Araki (IEICE Trans. Commun., 2005)

Experimental Analysis of MIMO-OFDM Eigenmode Transmission with MMSE Interference Canceller. - Yuichi Kakishima; Hai Doan Le; See Ho Ting; Kei Sakaguchi; Kiyomichi Araki (PIMRC, 2006)

Performance Analysis of Diversity Techniques for Multihop Cooperative Networks with Adaptive Transmission. - Bao Thi Ngoc Pham; Hidekazu Murata; Kiyomichi Araki (PIMRC, 2006)

Measurement of Time-Varying MIMO Channel for Performance Analysis of Closed-Loop Transmission. - Kei Mizutani; Kei Sakaguchi; Jun-ichi Takada; Kiyomichi Araki (VTC Spring, 2006)

Multiple Access Performance of TR-UWB System Using a Combined PPM and Differential Multi-Pulse Modulation. - Jakkrapong Sumethnapis; Kiyomichi Araki (VTC Spring, 2006)

Performance Analysis of MIMO-OFDM Systems using Indoor Wideband MIMO Channel Measurement Data. - Gia Khanh Tran; Nguyen Dung Dao; Kei Sakaguchi; Kiyomichi Araki; Hiroshi Iwai; Tsutomu Sakata; Koichi Ogawa (VTC Spring, 2006)

A Markov-Kronecker model for analysis of closed-loop MIMO systems. - See Ho Ting; Kei Sakaguchi; Kiyomichi Araki (IEEE Commun. Lett., 2006)

Dimensional extension of Kurokawa's stability criterion for general multi-port device oscillators. - Takashi Ohira; Kiyomichi Araki (IEICE Electron. Express, 2006)

Oscillator frequency spectrum as viewed from resonant energy storage and complex Q factor. - Takashi Ohira; Kiyomichi Araki (IEICE Electron. Express, 2006)

Special Section on Advanced RF Technologies for Compact Wireless Equipment and Mobile Phones. - Kiyomichi Araki (IEICE Trans. Electron., 2006)

A Novel Adaptive Linearization Technique for a Balanced-Amplifier Array. - Takana Kaho; Yo Yamaguchi; Tadao Nakagawa; Katsuhiko Araki; Kiyomichi Araki (IEICE Trans. Electron., 2006)

Prototype Implementation of Real-Time ML Detectors for Spatial Multiplexing Transmission. - Toshiaki Koike; Yukinaga Seki; Hidekazu Murata; Susumu Yoshida; Kiyomichi Araki (IEICE Trans. Commun., 2006)

Development of MIMO-SDR Platform and Its Application to Real-Time Channel Measurements. - Kei Mizutani; Kei Sakaguchi; Jun-ichi Takada; Kiyomichi Araki (IEICE Trans. Commun., 2006)

Multiple Access in TR-UWB System Using Differential Multi-Pulse Modulation. - Jakkrapong Sumethnapis; Kiyomichi Araki (IEICE Trans. Commun., 2006)

Pilot Symbol Aided MAP-Based 3D Channel Estimation for Multi-User MIMO-OFDM Systems. - Junyi Wang; Kiyomichi Araki (IEICE Trans. Commun., 2006)

Two Low Complexity Receiver Structures for Down-Link OFDMA Systems. - Junyi Wang; Kiyomichi Araki (IEICE Trans. Commun., 2006)

A robust and low complexity adaptive algorithm for mimo eigenmode transmission system with experimental validation. - See Ho Ting; Kei Sakaguchi; Kiyomichi Araki (IEEE Trans. Wirel. Commun., 2006)

Novel Multi-Stage Transmultiplexing Digital Down Converter for Implementation of RFID (ISO18000-3 MODE 2) Reader/Writer. - Yuichi Nakagawa; Masahiro Muraguchi; Hideki Kawamura; Kyoji Ohashi; Kei Sakaguchi; Kiyomichi Araki (VTC Spring, 2007)

Special Section on Microwave and Millimeter-Wave Technology. - Kiyomichi Araki (IEICE Trans. Electron., 2007)

TR-UWB Systems with Pulse-Position Multi-Pulse Modulation for ECC's and Japan's Radiation Masks. - Jakkrapong Sumethnapis; Kiyomichi Araki (IEICE Trans. Commun., 2007)

Delay Time Error Effect for Various TR-UWB Systems. - Jakkrapong Sumethnapis; Kiyomichi Araki (IEICE Trans. Commun., 2007)

A Game Theoretic Framework for Fair-Efficient Threshold Parameters Selection in Call Admission Control for CDMA Mobile Multimedia Systems. - Jenjoab Virapanicharoen; Watit Benjapolakul; Kiyomichi Araki (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2007)

A Low Complexity Tree-Structure Based User Scheduling Algorithm for Up-Link Multi-User MIMO Systems. - Junyi Wang; Kiyomichi Araki; Zhongzhao Zhang; Yuyuan Chang; Houtao Zhu; Tsuyoshi Kashima (IEICE Trans. Commun., 2007)

Active Q-Factor and Equilibrium Stability Formulation for Sinusoidal Oscillators. - Takashi Ohira; Kiyomichi Araki (IEEE Trans. Circuits Syst. II Express Briefs, 2007)

Cell Planning for Cooperative Transmission. - Ian Dexter Garcia; Kei Sakaguchi; Kiyomichi Araki (WCNC, 2008)

Multi-Channel Multi-Stage Transmultiplexing Digital Down Converter and Its Application to RFID (ISO18000-3 mode 2) Reader/Writer. - Yuichi Nakagawa; Kei Sakaguchi; Hideki Kawamura; Kyoji Ohashi; Masahiro Muraguchi; Kiyomichi Araki (IEICE Trans. Commun., 2008)

On Generalized Feistel Structures Using the Diffusion Switching Mechanism. - Taizo Shirai; Kiyomichi Araki (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2008)

Capacity Analysis of MIMO Rayleigh Channel with Spatial Fading Correlation. - Ha Duyen Trung; Watit Benjapolakul; Kiyomichi Araki (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2008)

Performance Analysis of the Extended Low Complexity User Scheduling Algorithm over Up-Link Multi-User MIMO OFDMA Systems. - Junyi Wang; Yuyuan Chang; Chuyu Zheng; Kiyomichi Araki; Zhongzhao Zhang (IEICE Trans. Commun., 2008)

Robust design for multiuser block diagonalization MIMO downlink system with CSI feedback delay. - Yuyuan Chang; Kiyomichi Araki (PIMRC, 2009)

Wireless mesh network performance: MIMO two-way relay vs. CSMA/CA based protocols. - Gia Khanh Tran; Kei Sakaguchi; Kiyomichi Araki (PIMRC, 2009)

Performance Evaluation of Wireless Sensor Network Based on MIMO Relaying Channel Capacity. - Ky Leng; Kei Sakaguchi; Kiyomichi Araki (IEICE Trans. Commun., 2009)

2D MIMO Network Coding with Inter-Route Interference Cancellation. - Gia Khanh Tran; Kei Sakaguchi; Fumie Ono; Kiyomichi Araki (IEICE Trans. Commun., 2009)

On the spectral efficiency of MIMO two-way multihop networks with co-existing flows. - Rindranirina Ramamonjison; Jonghyun Lee; Kei Sakaguchi; Kiyomichi Araki (CrownCom, 2010)

Routing and Power Allocation in MIMO Two-Way Multihop Networks: A New Cross-Layer Approach to Mitigate Interference. - Rindranirina Ramamonjison; Jonghyun Lee; Kei Sakaguchi; Kiyomichi Araki (GLOBECOM, 2010)

Dynamic cooperation set clustering on base station cooperation cellular networks. - Ian Dexter Garcia; Naoki Kusashima; Kei Sakaguchi; Kiyomichi Araki (PIMRC, 2010)

MIMO Radio Propagation Measurement for Two-Hop Relay Network on L-Shaped Corridor with Network Performance Analysis. - Namzilp Lertwiram; Gia Khanh Tran; Keiichi Mizutani; Kei Sakaguchi; Kiyomichi Araki (VTC Spring, 2010)

Hardware Prototype for Two-Way Multi-Hop Relay Network with MIMO Network Coding. - Keiichi Mizutani; Takehiro Miyamoto; Takamichi Kanno; Kei Sakaguchi; Kiyomichi Araki (VTC Spring, 2010)

Network Synchronization for Two-Way Multi-Hop Relay Networks with Block Modulation. - Keiichi Mizutani; Kei Sakaguchi; Kiyomichi Araki (VTC Spring, 2010)

An Efficient Retransmission Scheme for MIMO Two-Way Relay Network Employing Network Coding. - Gia Khanh Tran; Kei Sakaguchi; Kiyomichi Araki (VTC Spring, 2010)

Impact of Base Station Cooperation on Cell Planning. - Ian Dexter Garcia; Naoki Kusashima; Kei Sakaguchi; Kiyomichi Araki; Shoji Kaneko; Yoji Kishi (EURASIP J. Wirel. Commun. Netw., 2010)

MIMO Network Coding-Based PHY/MAC Protocol for Replacement of CSMA/CA in Efficient Two-Way Multihop Relay Networks. - Gia Khanh Tran; Kei Sakaguchi; Kiyomichi Araki (EURASIP J. Wirel. Commun. Netw., 2010)

The Gaussian MIMO Broadcast Channel under Receive Power Protection Constraints. - Ian Dexter Garcia; Kei Sakaguchi; Kiyomichi Araki (IEICE Trans. Commun., 2010)

Effect of Power Allocation Schemes on MIMO Two-Way Multi-Hop Network. - Jonghyun Lee; Gia Khanh Tran; Kei Sakaguchi; Kiyomichi Araki (IEICE Trans. Commun., 2010)

Topology Design and Performance Evaluation of Wireless Sensor Network Based on MIMO Channel Capacity. - Ky Leng; Kei Sakaguchi; Kiyomichi Araki (IEICE Trans. Commun., 2010)

Efficient Method to Measure IMD of Power Amplifier with Simplified Phase Determination Procedure to Clarify Memory Effect Origins. - Takeshi Takano; Yasuyuki Oishi; Shigekazu Kimura; Michiharu Nakamura; Kazuo Nagatani; Eisuke Fukuda; Yoshimasa Daido; Kiyomichi Araki (IEICE Trans. Electron., 2010)

Performance Analysis of MIMO Schemes in Residential Home Environment via Wideband MIMO Propagation Measurement. - Gia Khanh Tran; Nguyen Dung Dao; Kei Sakaguchi; Kiyomichi Araki; Hiroshi Iwai; Tsutomu Sakata; Koichi Ogawa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2010)

An Analysis of Multi-Layer Inductors for Miniaturizing of GaAs MMIC. - Yo Yamaguchi; Takana Kaho; Motoharu Sasaki; Kenjiro Nishikawa; Tomohiro Seki; Tadao Nakagawa; Kazuhiro Uehara; Kiyomichi Araki (IEICE Trans. Electron., 2010)

A Unified Distortion Analysis of Nonlinear Power Amplifiers with Memory Effects for OFDM Signals. - Yitao Zhang; Kiyomichi Araki (IEICE Trans. Electron., 2010)

A Novel Predistorter Design for Nonlinear Power Amplifier with Memory Effects in OFDM Communication Systems Using Orthogonal Polynomials. - Yitao Zhang; Kiyomichi Araki (IEICE Trans. Electron., 2010)

Spectrum allocation strategies for heterogeneous networks. - Rindranirina Ramamonjison; Gia Khanh Tran; Kei Sakaguchi; Kiyomichi Araki; Shoji Kaneko; Yoji Kishi; Noriaki Miyazaki (CrownCom, 2011)

A study on design of spatial fading emulator based on Clarke's model. - Daisuke Matsuo; Maki Arai; Kei Sakaguchi; Kiyomichi Araki (PIMRC, 2011)

A study on beam tilt angle of base station antennas for Base Station Cooperation systems. - Doppo Sugimura; Maki Arai; Kei Sakaguchi; Kiyomichi Araki; Takayuki Sotoyama (PIMRC, 2011)

Wireless Grid: Enabling Ubiquitous Sensor Networks with Wireless Energy Supply. - Ragil Putro Wicaksono; Gia Khanh Tran; Kei Sakaguchi; Kiyomichi Araki (VTC Spring, 2011)

Simplified Block Diagonalization for Multiuser MIMO Systems with Gram-Schmidt Orthogonalization. - Yuyuan Chang; Kiyomichi Araki (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2011)

Simplified Capacity-Based User Scheduling Algorithm for Multiuser MIMO Systems with Block Diagonalization. - Yuyuan Chang; Kiyomichi Araki (IEICE Trans. Commun., 2011)

A Low-Noise, High-Gain Quasi-Millimeter-Wave Receiver MMIC with a Very High Degree of Integration Using 3D-MMIC Technology. - Takana Kaho; Yo Yamaguchi; Kazuhiro Uehara; Kiyomichi Araki (IEICE Trans. Electron., 2011)

Dynamic Fractional Base Station Cooperation Using Shared Distributed Remote Radio Units for Advanced Cellular Networks. - Naoki Kusashima; Ian Dexter Garcia; Kei Sakaguchi; Kiyomichi Araki; Shoji Kaneko; Yoji Kishi (IEICE Trans. Commun., 2011)

Performance Analysis of a 10-Gb/s Millimeter-Wave Impulse Radio Transmitter. - Yasuhiro Nakasha; Naoki Hara; Kiyomichi Araki (IEICE Trans. Electron., 2011)

Iterative Determination of Phase Reference in IMD Measurement to Characterize Nonlinear Behavior, and to Derive Inverse, for Power Amplifier with Memory Effect. - Yasuyuki Oishi; Shigekazu Kimura; Eisuke Fukuda; Takeshi Takano; Yoshimasa Daido; Kiyomichi Araki (IEICE Trans. Electron., 2011)

Detailed Analysis of Multilayer Broad-Side Coupler with a Symmetric Structure. - Hiroshi Okazaki; Kiyomichi Araki (IEICE Trans. Electron., 2011)

Shared Remote Radio Head architecture to realize semi-dynamic clustering in CoMP cellular networks. - Daisuke Matsuo; Roya E. Rezagah; Gia Khanh Tran; Kei Sakaguchi; Kiyomichi Araki; Shoji Kaneko; Noriaki Miyazaki; Satoshi Konishi; Yoji Kishi (GLOBECOM Workshops, 2012)

Multi-sensor location estimation for illegal cell-phone use in real-life indoor environment. - Kentaro Sano; Gia Khanh Tran; Masahiro Watanabe; Kei Sakaguchi; Kiyomichi Araki; Daisuke Hayashi; Toshihiro Yamaguchi; Shintaro Arata (ICCS, 2012)

Theoretical analysis of ICI reduction methods due to phase noise and frequency offset in OFDM systems. - Gia Khanh Tran; Kei Obara; Alden Ho Chun Hoe; Kiyomichi Araki (ICCS, 2012)

Experimental study on multi-point wireless energy transmission at 950 MHz band. - Daiki Maehara; Gia Khanh Tran; Kei Sakaguchi; Kiyomichi Araki; Takehiro Miyamoto; Minoru Furukawa (ISSSE, 2012)

Optimization of picocell locations and its parameters in heterogeneous networks with hotspots. - Hidekazu Shimodaira; Gia Khanh Tran; Shinichi Tajima; Kei Sakaguchi; Kiyomichi Araki; Noriaki Miyazaki; Shoji Kaneko; Satoshi Konishi; Yoji Kishi (PIMRC, 2012)

Experiment on MIMO two-way relaying using transmit beamforming. - Vutha Va; Keiichi Mizutani; Yutaro Kida; Kei Sakaguchi; Kiyomichi Araki; Takehiro Miyamoto (PIMRC, 2012)

Proportionally Fair User Scheduling for Multiuser MIMO Systems with Unequal Average SNR Users. - Yuyuan Chang; Kiyomichi Araki (VTC Spring, 2012)

Network Synchronization Scheme for Scalable Two-Way Multi-Hop Network Employing MIMO Network Coding. - Yutaro Kida; Keiichi Mizutani; Gia Khanh Tran; Takehiro Miyamoto; Kei Sakaguchi; Kiyomichi Araki (VTC Spring, 2012)

Relay Placement of Two-Way Multi-Hop Relay Network with Power Adaptation in a Realistic Shadowing Environment. - Namzilp Lertwiram; Gia Khanh Tran; Kei Sakaguchi; Kiyomichi Araki (VTC Spring, 2012)

Design of Predistorter Using Measured Nonlinear Characteristics of Power Amplifier with Memory Effect. - Yasuyuki Oishi; Shigekazu Kimura; Daisuke Takago; Yoshimasa Daido; Kiyomichi Araki; Eisuke Fukuda; Takeshi Takano (VTC Spring, 2012)

Distributed Optimization of Transceiver Weights in MIMO Two-Way Multihop Networks. - Rindranirina Ramamonjison; Gia Khanh Tran; Kei Sakaguchi; Kiyomichi Araki (VTC Spring, 2012)

Optimal Low Noise Single Front-End MIMO Receiver System with Parasitic Antenna Element. - Jaeho Jeong; Gia Khanh Tran; Kiyomichi Araki (IEICE Trans. Electron., 2012)

Performance Comparison between Open Loop and Closed Loop MIMO-OFDM Schemes Using Analytical Approach. - Minjee Kim; Gia Khanh Tran; Kei Sakaguchi; Kiyomichi Araki (IEICE Trans. Commun., 2012)

Performance Analysis of MIMO Relay Network via Propagation Measurement in L-Shaped Corridor Environment. - Namzilp Lertwiram; Gia Khanh Tran; Keiichi Mizutani; Kei Sakaguchi; Kiyomichi Araki (IEICE Trans. Commun., 2012)

Prototype Hardware for TDD Two-Way Multi-Hop Relay Network Using MIMO Network Coding. - Keiichi Mizutani; Takehiro Miyamoto; Kei Sakaguchi; Kiyomichi Araki (IEICE Trans. Commun., 2012)

Design of a Direct Sampling Mixer with a Complex Coefficient Transfer Function. - Yohei Morishita; Noriaki Saito; Koji Takinami; Kiyomichi Araki (IEICE Trans. Electron., 2012)

Design of Predistorter with Efficient Updating Algorithm of Power Amplifier with Memory Effect. - Yasuyuki Oishi; Shigekazu Kimura; Eisuke Fukuda; Takeshi Takano; Daisuke Takago; Yoshimasa Daido; Kiyomichi Araki (IEICE Trans. Electron., 2012)

Study on Resource Optimization for Heterogeneous Networks. - Gia Khanh Tran; Shinichi Tajima; Rindranirina Ramamonjison; Kei Sakaguchi; Kiyomichi Araki; Shoji Kaneko; Noriaki Miyazaki; Satoshi Konishi; Yoji Kishi (IEICE Trans. Commun., 2012)

Single Front-End MIMO Architecture with Parasitic Antenna Elements. - Mitsuteru Yoshida; Kei Sakaguchi; Kiyomichi Araki (IEICE Trans. Commun., 2012)

Practical data compression in wireless sensor networks: A survey. - Tossaporn Srisooksai; Kamol Keamarungsi; Poonlap Lamsrichan; Kiyomichi Araki (J. Netw. Comput. Appl., 2012)

Large scale cooperation in cellular networks with non-uniform user distribution. - Roya E. Rezagah; Daisuke Matsuo; Gia Khanh Tran; Kei Sakaguchi; Kiyomichi Araki; Satoshi Konishi (GLOBECOM Workshops, 2013)

Cloud cooperated heterogeneous cellular networks. - Kei Sakaguchi; Seiichi Sampei; Hidekazu Shimodaira; Roya E. Rezagah; Gia Khanh Tran; Kiyomichi Araki (ISPACS, 2013)

Experiment on MIMO cognitive radio using Tx/Rx beamforming. - Ryosuke Iwata; Vutha Va; Kei Sakaguchi; Kiyomichi Araki (PIMRC, 2013)

Experiment on battery-less sensor activation via multi-point wireless energy transmission. - Daiki Maehara; Ryota Akai; Gia Khanh Tran; Kei Sakaguchi; Seiichi Sampei; Kiyomichi Araki; Hiroshi Iwai (PIMRC, 2013)

Nonlinear Modeling and Analysis on Concurrent Amplification of Dual-Band Gaussian Signals. - Ikuma Ando; Gia Khanh Tran; Kiyomichi Araki; Takayuki Yamada; Takana Kaho; Yo Yamaguchi; Kazuhiro Uehara (IEICE Trans. Electron., 2013)

Simple Linearity Analysis of Passive Mixer Based on DC Characteristics of MOS FET. - Yohei Morishita; Kiyomichi Araki (IEICE Trans. Electron., 2013)

Distributed Power Control Network and Green Building Test-Bed for Demand Response in Smart Grid. - Kei Sakaguchi; Van Ky Nguyen; Yu Tao 011; Gia Khanh Tran; Kiyomichi Araki (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2013)

Optimization of Picocell Locations and Its Parameters in Heterogeneous Networks with Hotspots. - Hidekazu Shimodaira; Gia Khanh Tran; Kei Sakaguchi; Kiyomichi Araki; Shoji Kaneko; Noriaki Miyazaki; Satoshi Konishi; Yoji Kishi (IEICE Trans. Commun., 2013)

An Efficient Relay Placement Method with Power Allocation for MIMO Two-Way Multi-Hop Networks. - Gia Khanh Tran; Rindranirina Ramamonjison; Kei Sakaguchi; Kiyomichi Araki (IEICE Trans. Commun., 2013)

An Efficient Relay Node Placement Scheme for Two-Way MIMO Multi-Hop Networks in Practical Indoor Environments. - Namzilp Lertwiram; Gia Khanh Tran; Kei Sakaguchi; Kiyomichi Araki (IEEE Trans. Wirel. Commun., 2013)

Cell association method for multiband heterogeneous networks. - Hidekazu Shimodaira; Gia Khanh Tran; Kiyomichi Araki; Shinobu Nanba; Takahiro Hayashi; Kei Sakaguchi; Satoshi Konishi (PIMRC, 2014)

Complexity-Reduced Low Noise Matching Design of Receiver Front-end Amplifiers with Mutually Coupled 2×2 MIMO Antennas. - Jaeho Jeong; Gia Khanh Tran; Kiyomichi Araki (IEICE Trans. Electron., 2014)

Experiments Validating the Effectiveness of Multi-Point Wireless Energy Transmission with Carrier Shift Diversity. - Daiki Maehara; Gia Khanh Tran; Kei Sakaguchi; Kiyomichi Araki; Minoru Furukawa (IEICE Trans. Commun., 2014)

Large Scale Cooperation in Cellular Networks with Non-uniform User Distribution. - Roya E. Rezagah; Gia Khanh Tran; Kei Sakaguchi; Kiyomichi Araki; Satoshi Konishi (IEICE Trans. Commun., 2014)

Investigation on millimeter-wave spectrum for 5G. - Hidekazu Shimodaira; Gia Khanh Tran; Kei Sakaguchi; Kiyomichi Araki (CSCN, 2015)

Dynamic cell activation and user association for green 5G heterogeneous cellular networks. - Gia Khanh Tran; Hidekazu Shimodaira; Roya Ebrahim Rezagah; Kei Sakaguchi; Kiyomichi Araki (PIMRC, 2015)

Experimental Validation of Digital Pre-distortion Technique for Dual-band Dual-signal Amplification by Single Feedback Architecture Employing Dual-band Mixer. - Ikuma Ando; Gia Khanh Tran; Kiyomichi Araki; Takayuki Yamada; Takana Kaho; Yo Yamaguchi; Tadao Nakagawa (IEICE Trans. Electron., 2015)

Concurrent Multi-Band Mixer with Independent and Linear Gain Control. - Takana Kaho; Yo Yamaguchi; Hiroyuki Shiba; Tadao Nakagawa; Kazuhiro Uehara; Kiyomichi Araki (IEICE Trans. Electron., 2015)

Dual-Polarization RCS Reduction of X-Band Antenna Using Switchable Reflector. - Shinya Kitagawa; Ryosuke Suga; Kiyomichi Araki; Osamu Hashimoto (IEICE Trans. Electron., 2015)

Practical evaluation of on-demand smallcell ON/OFF based on traffic model for 5G cellular networks. - Gia Khanh Tran; Hidekazu Shimodaira; Roya Ebrahim Rezagah; Kei Sakaguchi; Kiyomichi Araki (WCNC Workshops, 2016)

Robust and Low Complexity Bandwidth and Carrier Frequency Estimation for Cognitive Radio. - Hiroyuki Kamata; Gia Khanh Tran; Kei Sakaguchi; Kiyomichi Araki (IEICE Trans. Commun., 2016)

Practical Implementation of Spectrum Sensing and Signal Detection for Satellite Broadcasting Systems. - Hiroyuki Kamata; Gia Khanh Tran; Kei Sakaguchi; Kiyomichi Araki (IEICE Trans. Commun., 2016)

Study on RCS Reduction of Patch Array Using Switchable Absorption/Transmission Surface. - Shinya Kitagawa; Ryosuke Suga; Osamu Hashimoto; Kiyomichi Araki (IEICE Trans. Electron., 2016)

Experimental Study on Battery-Less Sensor Network Activated by Multi-Point Wireless Energy Transmission. - Daiki Maehara; Gia Khanh Tran; Kei Sakaguchi; Kiyomichi Araki (IEICE Trans. Commun., 2016)

Diamond Cellular Network - Optimal Combination of Small Power Basestations and CoMP Cellular Networks -. - Hidekazu Shimodaira; Gia Khanh Tran; Kei Sakaguchi; Kiyomichi Araki; Shinobu Nanba; Satoshi Konishi (IEICE Trans. Commun., 2016)

Optimal Design Method of MIMO Antenna Directivities and Corresponding Current Distributions by Using Spherical Mode Expansion. - Maki Arai; Masashi Iwabuchi; Kei Sakaguchi; Kiyomichi Araki (IEICE Trans. Commun., 2017)

A cross polarization suppression of circular patch array absorber with perturbation elements. - Daisuke Kitahara; Ryosuke Suga; Kiyomichi Araki; Osamu Hashimoto (IEICE Electron. Express, 2018)

Winding Ratio Design of Transformer in Equivalent Circuit of Circular Patch Array Absorber. - Ryosuke Suga; Tomohiko Nakamura; Daisuke Kitahara; Kiyomichi Araki; Osamu Hashimoto (IEICE Trans. Electron., 2018)

A Study on Optimal Beam Patterns for Single User Massive MIMO Transmissions. - Maki Arai; Kei Sakaguchi; Kiyomichi Araki (IEICE Trans. Commun., 2019)

Experimental Evaluation of Intersymbol Interference in Non-Far Region Transmission using a Large Array Antenna in the Millimeter-Wave Band. - Tuchjuta Ruckkwaen; Takashi Tomura; Kiyomichi Araki; Jiro Hirokawa; Makoto Ando (IEICE Trans. Commun., 2020)

Multi-UAV Full-Duplex Communication Systems for Joint Video Transmission and Flight Control. - Tao Yu 011; Shunya Imada; Kiyomichi Araki; Kei Sakaguchi (CCWC, 2021)

Analysis of Intersymbol Interference Characterized by the Large Array Antennas Adopted in a 60-GHz-Band Gigabit Compact-Range Wireless Access System. - Miao Zhang; Masahiro Wakasa; Koji Toyosaki; Kiyomichi Araki; Jiro Hirokawa; Makoto Ando (IEEE Access, 2021)

Design of Ultra-Thin Wave Absorber with Square Patch Array Considering Electromagnetic Coupling between Patch Array and Back-Metal. - Sota Matsumoto; Ryosuke Suga; Kiyomichi Araki; Osamu Hashimoto (IEICE Trans. Electron., 2021)

Full-Duplex Aerial Communication System for Multiple UAVs with Directional Antennas. - Tao Yu 011; Kiyomichi Araki; Kei Sakaguchi (CCNC, 2022)

Ground Experiment of Full-Duplex Multi-UAV System Enabled by Directional Antennas. - Tao Yu 011; Kiyomichi Araki; Kei Sakaguchi (CCWC, 2022)

Spectrum Sharing between Directional-Antenna-Equipped UAV System and Terrestrial Systems. - Tao Yu 011; Kento Kajiwara; Kiyomichi Araki; Kei Sakaguchi (CCWC, 2022)

Experiment of Multi-UAV Full-Duplex System Equipped with Directional Antennas. - Tao Yu 011; Kento Kajiwara; Kiyomichi Araki; Kei Sakaguchi (CCNC, 2023)