Yuhei NAGAO

2.65Gbps Downlink Communications with Polarization Multiplexing in X-Band for Small Earth Observation Satellite
Tomoki KANEKO Noriyuki KAWANO Yuhei NAGAO Keishi MURAKAMI Hiromi WATANABE Makoto MITA Takahisa TOMODA Keiichi HIRAKO Seiko SHIRASAKA Shinichi NAKASUKA Hirobumi SAITO Akira HIROSE 
Publication:   
Publication Date: 2021/01/01
Vol. E104-B  No. 1  pp. 1-12
Type of Manuscript:  POSITION PAPER
Category: Satellite Communications
Keyword: 
satellite communications, small satellite, DVB-S2X, Cross Polarization Discrimination (XPD), polarization multiplexing, 
 Summary | Full Text:PDF
Multi-User MIMO Channel Emulator with Automatic Channel Sounding Feedback
Tran Thi Thao NGUYEN Leonardo LANANTE Yuhei NAGAO Hiroshi OCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/11/01
Vol. E99-A  No. 11  pp. 1918-1927
Type of Manuscript:  Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)
Category: VLSI Design Technology and CAD
Keyword: 
MIMO channel emulator, FPGA implementation, channel state information, IEEE 802.11n/ac, frequency selective fading, 
 Summary | Full Text:PDF
Hardware Design of Multi Gbps RC4 Stream Cipher
Thi Hong TRAN Leonardo LANANTE, Jr. Yuhei NAGAO Hiroshi OCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/11/01
Vol. E96-A  No. 11  pp. 2120-2127
Type of Manuscript:  Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)
Category: VLSI Design Technology and CAD
Keyword: 
RC4, encryption, WEP, WPA, IEEE 802.11ac, 
 Summary | Full Text:PDF
Novel THP Scheme with Minimum Noise Enhancement for Multi-User MIMO Systems
Shogo FUJITA Leonardo LANANTE Jr. Yuhei NAGAO Masayuki KUROSAKI Hiroshi OCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/06/01
Vol. E96-A  No. 6  pp. 1340-1347
Type of Manuscript:  Special Section PAPER (Special Section on Circuit, System, and Computer Technologies)
Category: 
Keyword: 
multi-user MIMO, non-linear precoding, Tomlinson Harashima precoding, vector perturbation, 
 Summary | Full Text:PDF
RTL Design of High-Speed Sorted QR Decomposition for MIMO Decoder
Yuya MIYAOKA Yuhei NAGAO Masayuki KUROSAKI Hiroshi OCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/11/01
Vol. E95-A  No. 11  pp. 1991-1997
Type of Manuscript:  Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)
Category: Communication Theory and Signals
Keyword: 
MIMO, QRD, sorted QRD, RTL design, 
 Summary | Full Text:PDF
A CUDA Implementation of DWT for JPEG 2000 Codec
Masayuki KUROSAKI Masateru MATSUO Yoshimitsu KUROKI Yuhei NAGAO Baiko SAI Hiroshi OCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/11/01
Vol. E94-A  No. 11  pp. 2358-2360
Type of Manuscript:  Special Section LETTER (Special Section on Smart Multimedia & Communication Systems)
Category: Image Processing
Keyword: 
CUDA, 4K digital cinema, JPEG 2000, 
 Summary | Full Text:PDF
A Proposition of 600 Mbps WLAN-Like System with Low-Complexity MIMO Decoder for FPGA Implementation
Wahyul Amien SYAFEI Yuhei NAGAO Ryuta IMASHIOYA Masayuki KUROSAKI Baiko SAI Hiroshi OCHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/02/01
Vol. E94-B  No. 2  pp. 491-498
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
FPGA, GLST, high throughput, MIMO, RTL design, WLAN, 
 Summary | Full Text:PDF
A Study on Channel Estimation Using Two-Dimensional Interpolation Filters for Mobile Digital Terrestrial Television Broadcasting
Yusuke SAKAGUCHI Yuhei NAGAO Masayuki KUROSAKI Hiroshi OCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/04/01
Vol. E91-A  No. 4  pp. 1150-1154
Type of Manuscript:  Special Section LETTER (Special Section on Selected Papers from the 20th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
digital terrestrial television broadcasting, channel estimation, scattered pilot, two dimensional filter, 
 Summary | Full Text:PDF