"Hiroka Shiozaki,Takafumi Nasu,Kiyomichi Araki","Design and Measurement of Harmonic Rejection Direct Sampling Mixer","IEEE APMC 2009",,,,,,2009,Dec.
"Gia Khanh TRAN,Kei SAKAGUCHI,Kiyomichi ARAKI","Network simulator implementation of 1D MIMO network coding and performance comparison with CSMA/CA",,"IEEE 7th ICICS 2009",,,,,2009,Dec.
"JongHyun LEE,Gia Khanh TRAN,Kei SAKAGUCHI,Kiyomichi ARAKI","Power Allocation for MIMO Two-way Relay Network",,"IEEE 7th ICICS 2009",,,,,2009,Dec.
"Naoki KUSASHIMA,I. D. Garcia,Kei SAKAGUCHI,Kiyomichi ARAKI,Shoji KANEKO","Fractional Base Station Cooperation Cellular Network","IEEE 7th ICICS 2009","IEEE 7th ICICS 2009",,,,,2009,Dec.
"G. K. Tran,K. Sakaguchi,F. Ono,K. Araki","2D MIMO Network Coding with Inter-Route Interference Cancellation",,"IEICE Transaction on Communications",,"Vol. E92-B","No. 12","pp. 3665-3675",2009,Dec.
"Keiichi Mizutani,Takehiro Miyamoto,Takamichi Kannno,Kei Sakaguchi,Kiyomichi Araki","Hardware Prototype for Two-way Multi-hop Relay Network with Network Coding","IEICE Technical Committee on Software Radio","IEICE Technical Report","IEICE","vol. 109","no. 246","pp. 127-133",2009,Oct.
"Leng KY,Kei Sakaguchi,Kiyomichi Araki","Performance Evaluation of Wireless Sensor Network Based on MIMO Relaying Channel Capacity",,"IEICE Transaction on Communications",,"Vol. E92-B","No. 10","pp. 3166-3173",2009,Oct.
"Maki ARAI,Kei SAKAGUCHI,Kiyomichi ARAKI,Takayuki SOTOYAMA","Derivation of analytical eigenvalues for basestation cooperation MIMO channel",,"IEICE Technical Report",,"Vol. 109","No. 218","p. 73-78",2009,Oct.
"Yu Yuan Chang,Kiyomichi Araki","G9-4 Robust Design for Multiuser Block Diagonalization MIMO Downlink System with CSI Feedback Delay",,"The 20th Personal, Indoor and Mobile Radio Communications Symposium 2009 (PIMRC '09)",,,,,2009,Sept.
"Kei SAKAGUCHI,Naoki KUSASHIMA,Maki ARAI,Kiyomichi ARAKI","Channel Capacity of Basestation Cooperation Multi-user MIMO based on Block Diagonalization",,"IEICE Technical Report",,"Vol. 109","No. 304","p. 7-12",2009,Sept.
"J. Lee,G. K. Tran,K. Sakaguchi,K. Araki","Power Allocation for Two-way MIMO relay network",,"IEICE Society Conference 2009",,"  B-5-57",,,2009,Sept.
"G. K. Tran,K. Sakaguchi,K. Araki","Wireless mesh network performance: MIMO two-way relay vs. CSMA/CA based protocols",,"IEEE 20th PIMRC 2009",,,,,2009,Sept.
"keiichi Mizutani,Takehiro Miyamoto,Takamichi Kanno,Kei Sakaguchi,Kiyomichi Araki","Multi-channel Two-way Multi-hop Relay Network Hardware Prototype","IEICE Technical Committee on Software Radio","IEICE Technical Report","IEICE","vol. 109","no. 155","pp. 61-67",2009,July
"Naoki Kusashima,I. D. Garcia,S. Kaneko,T. Kaneko,Kei Sakaguchi,Kiyomichi Araki","Fractional Base Station Cooperation Cellular Network",,"IEICE Society Conference 2009",,"Vol. B-1-241","No. 445","  RCS2008-226, pp. 83-88",2009,June
"Keiichi Mizutani,Kei Sakaguchi,Kiyomichi Araki","MIMO-OFDM Two-way Multihop Network and Network Synchronization Scheme","IEICE Technical Committee on Software Radio","IEICE Technical Report","IEICE","vol. 109","no. 61","pp. 43-49",2009,May
"Y.Zhang,K. Araki","A Novel Analysis of Predicting Nonlinear Distortions in Power Amplifier for a Complex Gaussian Process","KJMW 2009","Proc. of 2009 Korea-Japan Microwave Conference (KJMW2009)",,,,,2009,Apr.
"Gia Khanh Tran,Kei Sakaguchi,Fumie Ono,Kiyomichi Araki","Network capacity improvement with two dimensional MIMO network coding","IEEE 2nd ICSPCS 2008","IEEE 2nd ICSPCS 2008",,,,,2009,Apr.
"Yuusei Owatari,Keiichi Mizutani,Kei Sakaguchi,Kiyomichi Araki,島田 修作","Design of carrier sense function based on FFT at 950MHz band","平成20 年度電子情報通信学会東京支部学生会研究発表会","平成20 年度電子情報通信学会東京支部学生会研究発表会",,,,"pp. 83",2009,Mar.
"Lee Jonghyun,Gia Khanh Tran,Kei Sakaguchi,Kiyomichi Araki","Power Allocation for Two-way MIMO relay network","移動通信ワークショップ","信学技報","電子情報通信学会","  AN2008-68, vol. 108","no. 447","pp. 23-27",2009,Mar.
"I. D. Garcia,K. Sakaguchi,N. Kusashima,K. Araki,Shoji KANEKO,Takashi INOUE","Cell Planning of Fractional Base Station Cooperation Network based on MIMO Channel Model","IEICE AP","IEICE Technical Report",,"Vol. 108","No. 475","  AP2008-233, pp. 107-112",2009,Mar.
"Mariko Saitou,鎌田裕之,Kei Sakaguchi,Kiyomichi Araki","IQ imbalance compensation for RF MIMO fading simulator","移動通信ワークショップ","信学技報,",,"Vol. 108","No. 446","  SR2008-93, pp. 27-32",2009,Mar.
"G. K. Tran,K. Sakaguchi,F. Ono,K. Araki","Y-type MIMO network coding with cooperative null beamforming","電子情報通信学会","信学技報","電子情報通信学会","  RCS2008-257, vol. 108","no. 445","pp. 267-272",2009,Mar.
"Mitsuteru Yoshida,Kei Sakaguchi,Kiyomichi Araki","寄生素子のある伝搬路応答の確率密度関数",,"信学総大",,,,,2009,Mar.
"M. Iwabuchi,K. Sakaguchi,K. Araki","Matched Antenna Design based on Spherical Mode Expansion","電子情報通信学会総合大会","IEICE Technical Report",,"Vol. 108","No. 475","  AP2008-215, pp. 23-27.",2009,Mar.
"Mitsuteru Yoshida,Kei Sakaguchi,Kiyomichi Araki","Analysis of probability density function of propagation channel using parasitic elements",,"信学技報",,,,,2009,Mar.
"G. K. Tran,K. Sakaguchi,F. Ono,K. Araki","Cooperative relay using distributed STBC in rotary typed MIMO network coding","IEICE General Conference","Proc. of IEICE General Conference",,"  B-5-91",,,2009,Mar.