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IEICE Trans

Koji ISHIBASHI

User-Centric Design of Millimeter Wave Communications for Beyond 5G and 6G
Koji ISHIBASHI Takanori HARA Sota UCHIMURA Tetsuya IYE Yoshimi FUJII Takahide MURAKAMI Hiroyuki SHINBO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2022/10/01
Vol. E105-B  No. 10  pp. 1117-1129
Type of Manuscript:  INVITED PAPER (Special Section on Multidisciplinary and Innovative Key technologies in Advanced communication systems (MIKA))
Category: 
Keyword: 
beyond 5G, 6G, millimeter wave, radio access network (RAN), low-latency massive access, robust coordinated multi-point (CoMP), blockage prediction, 
 Summary | Full Text:PDF
Signal Quality Improvement in Downlink Power Domain NOMA with Blind Nonlinear Compensator and Frequency Domain Equalizer
Jun NAGAI Koji ISHIBASHI Yasushi YAMAO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2022/05/01
Vol. E105-B  No. 5  pp. 648-656
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
5G, NOMA, SIC, nonlinear compensation, EVM, 
 Summary | Full Text:PDF
Decentralized Multilevel Power Allocation for Random Access
Huifa LIN Koji ISHIBASHI Won-Yong SHIN Takeo FUJII 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/10/01
Vol. E98-B  No. 10  pp. 1978-1987
Type of Manuscript:  Special Section PAPER (Special Section on 5G Radio Access Networks―Part II: Multi-RAT Heterogeneous Networks and Smart Radio Technologies)
Category: 
Keyword: 
random access, decentralized power allocation, convex optimization, multipacket reception (MPR), successive interference cancellation (SIC), machine-to-machine (M2M) communications, 
 Summary | Full Text:PDF
Nested Transmit Diversity Based on a Joint Network-Channel Coding
Koji ISHII Koji ISHIBASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/09/01
Vol. E96-B  No. 9  pp. 2261-2269
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
transmit diversity in time domain, joint network-channel coding, nested coding, network coding, 
 Summary | Full Text:PDF
Hierarchical Cooperation in Ultra-Wide Band Ad Hoc Networks
Won-Yong SHIN Koji ISHIBASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/03/01
Vol. E96-B  No. 3  pp. 887-890
Type of Manuscript:  LETTER
Category: Fundamental Theories for Communications
Keyword: 
hierarchical cooperation (HC), multi-hop, path-loss exponent, power-limited, throughput scaling, ultra-wide band (UWB), 
 Summary | Full Text:PDF
Effect of Multiple Antennas on the Transport Capacity in Large-Scale Ad Hoc Networks
Won-Yong SHIN Koji ISHIBASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/10/01
Vol. E95-B  No. 10  pp. 3113-3119
Type of Manuscript:  PAPER
Category: Fundamental Theories for Communications
Keyword: 
ad hoc network, fading, multi-hop, multiple antennas, opportunistic routing, scaling law, source–destination pair, 
 Summary | Full Text:PDF
Throughput Scaling of Ultra-Wide Band Ad Hoc Networks with Infrastructure
Won-Yong SHIN Koji ISHIBASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/09/01
Vol. E95-B  No. 9  pp. 2918-2921
Type of Manuscript:  LETTER
Category: Fundamental Theories for Communications
Keyword: 
Ad hoc network, base station (BS), infrastructure, multi-hop, power-limited, throughput scaling, ultra-wide band (UWB), 
 Summary | Full Text:PDF
Regional Diversity-Multiplexing Tradeoff
Won-Yong SHIN Koji ISHIBASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/10/01
Vol. E94-B  No. 10  pp. 2868-2871
Type of Manuscript:  LETTER
Category: Fundamental Theories for Communications
Keyword: 
multiple-input multiple-output (MIMO), outage, regional diversity-multiplexing tradeoff (DMT), Rician, 
 Summary | Full Text:PDF
Dirty Paper Coded Cooperation Utilizing Superposition Modulation
Koji ISHII Koji ISHIBASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/05/01
Vol. E91-B  No. 5  pp. 1540-1547
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
coded cooperation protocol, superposition modulation, dirty paper coding, half-duplex, iterative processing, 
 Summary | Full Text:PDF
A Scalable Model of Shielded Capacitors Using Mirror Image Effects
Koji ISHIBASHI Ivan Chee-Hong LAI Kyoya TAKANO Minoru FUJISHIMA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/12/01
Vol. E90-C  No. 12  pp. 2237-2244
Type of Manuscript:  Special Section PAPER (Special Section on Recent Technologies for Microwave and Millimeter-wave Passive Devices)
Category: 
Keyword: 
comb capacitor, shield, scalable model, quality-factor, CMOS, 
 Summary | Full Text:PDF
On the Realization of Quantum Computing Devices with Carbon Nanotube Quantum Dots
Koji ISHIBASHI Satoshi MORIYAMA Tomoko FUSE 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/11/01
Vol. E87-C  No. 11  pp. 1799-1803
Type of Manuscript:  Special Section PAPER (Special Section on New System Paradigms for Integrated Electronics)
Category: 
Keyword: 
quantum dot, quantum computing device, charge qubit, spin qubit, carbon nanotube, 
 Summary | Full Text:PDF