IEICE Trans

Takatoshi SUGIYAMA

System Throughput Gain by New Channel Allocation Scheme for Spectrum Suppressed Transmission in Multi-Channel Environments over a Satellite Transponder Sumika OMATA Motoi SHIRAI Takatoshi SUGIYAMA
Publication: Publication Date: 2020/10/01 Vol. E103-B No. 10 pp. 1059-1068 Type of Manuscript: Special Section PAPER (Special Section on New Era of Satellite Communication/Broadcasting/Application Technologies) Category: Keyword: spectrum suppressed transmission, frequency utilization efficiency, FEC, LE, channel allocation, system throughput,
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Undesired Radiation Suppression Technique for Distributed Array Antenna by Antenna Positioning and Delay Signal Processing Kouhei SUZUKI Hideya SO Daisuke GOTO Yoshinori SUZUKI Fumihiro YAMASHITA Katsuya NAKAHIRA Kiyoshi KOBAYASHI Takatoshi SUGIYAMA
Publication: Publication Date: 2017/10/01 Vol. E100-B No. 10 pp. 1959-1967 Type of Manuscript: PAPER Category: Satellite Communications Keyword: distributed array antenna (DAA), undesired radiation suppression, delay compensation, satellite communication,
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Throughput Enhancement for SATCOM Systems Using Dynamic Spectrum Controlled Channel Allocation under Variable Propagation Conditions Katsuya NAKAHIRA Jun MASHINO Jun-ichi ABE Daisuke MURAYAMA Tadao NAKAGAWA Takatoshi SUGIYAMA
Publication: Publication Date: 2017/02/01 Vol. E100-B No. 2 pp. 390-399 Type of Manuscript: PAPER Category: Satellite Communications Keyword: satellite communication, channel allocation, resource control, adaptive coding and modulation, spectrum compression, spectrum division, demand assigned multiple access,
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Blind Interference Suppression Scheme by Eigenvector Beamspace CMA Adaptive Array with Subcarrier Transmission Power Assignment for Spectrum Superposing Kazuki MARUTA Jun MASHINO Takatoshi SUGIYAMA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2015/06/01 Vol. E98-B No. 6 pp. 1050-1057 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: adaptive array, Subcarrier Transmission Power Assignment (STPA), blind algorithm, Eigenvector Beamspace Adaptive Array (EBAA), Constant Modulus Algorithm (CMA), spectrum superposing,
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Path Loss Variation Characteristics at 26GHz Band in Street Microcell Environment Motoharu SASAKI Wataru YAMADA Takatoshi SUGIYAMA Tetsuro IMAI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2015/05/01 Vol. E98-B No. 5 pp. 783-789 Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Radio Propagation) Category: Keyword: propagation, millimeter wave, street micro-cell, fading,
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Hybrid Station Aided Coexistence Scheme between Wireless PANs and Wireless LAN Fumihiro INOUE Takayuki NISHIO Masahiro MORIKURA Koji YAMAMOTO Fusao NUNO Takatoshi SUGIYAMA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2015/02/01 Vol. E98-A No. 2 pp. 578-588 Type of Manuscript: Special Section PAPER (Special Section on Wideband Systems) Category: Keyword: coexistence, IEEE 802.15.4, IEEE 802.11, ZigBee, WLAN, WPAN, WSN, QoS,
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Path Loss Model for Low Antenna Heights in Residential Areas at Middle VHF Band Motoharu SASAKI Wataru YAMADA Naoki KITA Takatoshi SUGIYAMA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2014/10/01 Vol. E97-B No. 10 pp. 2093-2101 Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Measurement and Design Techniques on Antennas, Propagation and Wireless Systems) Category: Keyword: path loss model, low antenna height, mobile terminal, residential area, VHF band,
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Multiband Sector Antenna with the Same Beamwidth Employing Multiple Woodpile Metamaterial Reflectors Hideya SO Atsuya ANDO Tomohiro SEKI Munenari KAWASHIMA Takatoshi SUGIYAMA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2014/10/01 Vol. E97-C No. 10 pp. 976-985 Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Microwave and Millimeter-wave Technologies) Category: Keyword: sector base station antenna, multiband antenna, metamaterial, electromagnetic band gap (EBG) characteristics,
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Virtual Continuous CWmin Control Scheme of WLAN Yuki SANGENYA Fumihiro INOUE Masahiro MORIKURA Koji YAMAMOTO Fusao NUNO Takatoshi SUGIYAMA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2014/01/01 Vol. E97-A No. 1 pp. 40-48 Type of Manuscript: Special Section PAPER (Special Section on Wideband Systems) Category: Foundations Keyword: CSMA/CA, IEEE 802.11 DCF, CWmin control, fairness, performance analysis model,
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Path Loss Model with Low Antenna Height for Microwave Bands in Residential Areas Motoharu SASAKI Wataru YAMADA Naoki KITA Takatoshi SUGIYAMA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2013/07/01 Vol. E96-B No. 7 pp. 1930-1944 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: path loss model, low antenna height, mobile terminal, residential area, microwave band,
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Implementation of a TDMA Based Wireless Network Coding Prototype System with Ethernet Frame Aggregation Nobuaki OTSUKI Takatoshi SUGIYAMA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2012/12/01 Vol. E95-B No. 12 pp. 3752-3759 Type of Manuscript: Special Section PAPER (Special Section on Coding and Coding Theory-Based Signal Processing for Wireless Communications) Category: Keyword: wireless network coding, multihop, TDMA, GPS,
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Wireless Network Coding Diversity Technique Based on Hybrid AF/DF Relay Method Employing Adaptive Power Control at Relay Node for Bidirectional Two-Hop Wireless Networks Nobuaki OTSUKI Takatoshi SUGIYAMA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2012/12/01 Vol. E95-B No. 12 pp. 3772-3785 Type of Manuscript: PAPER Category: Fundamental Theories for Communications Keyword: wireless network coding, diversity, error propagation, position flexibility,
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Novel Channel Allocation Algorithm Using Spectrum Control Technique for Effective Usage of both Satellite Transponder Bandwidth and Satellite Transmission Power Katsuya NAKAHIRA Jun-ichi ABE Jun MASHINO Takatoshi SUGIYAMA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2012/11/01 Vol. E95-B No. 11 pp. 3393-3403 Type of Manuscript: Special Section PAPER (Special Section on Satellite Communication Technologies in Conjunction with Main Topics of JC-SAT2011) Category: Keyword: satellite communication, channel allocation, adaptive coding and modulation, multi-carrier transmission, single-carrier transmission, spectrum compression, spectrum division, DAMA,
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Novel Polarization-Tracking-Free Mobile Satellite Communication Systems and On-Ground Polarization-Forming Technique Yoshinori SUZUKI Takatoshi SUGIYAMA Kiyoshi KOBAYASHI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2012/11/01 Vol. E95-B No. 11 pp. 3412-3419 Type of Manuscript: Special Section PAPER (Special Section on Satellite Communication Technologies in Conjunction with Main Topics of JC-SAT2011) Category: Keyword: communication satellite, earth station, and polarization forming,
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A Highly Efficient DAMA Algorithm for Making Maximum Use of both Satellite Transponder Bandwidth and Transmission Power Katsuya NAKAHIRA Takatoshi SUGIYAMA Hiroki NISHIYAMA Nei KATO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2012/08/01 Vol. E95-B No. 8 pp. 2619-2630 Type of Manuscript: PAPER Category: Satellite Communications Keyword: satellite communication, channel allocation, adaptive modulation and coding, multi-carrier transmission, DAMA,
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Spectral Efficiency Improvement of Fractional Frequency Reuse by Inter-Cell Interference Cancellation on Cooperative Base Station Kazuki MARUTA Atsushi OHTA Masataka IIZUKA Takatoshi SUGIYAMA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2012/06/01 Vol. E95-B No. 6 pp. 2164-2168 Type of Manuscript: LETTER Category: Wireless Communication Technologies Keyword: inter-cell interference cancellation, base station cooperation, fractional frequency reuse,
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Enhancement of CSMA/CA and Network Coding in Single-Relay Multi-User Wireless Networks Chun-Hsiang HUANG Daisuke UMEHARA Satoshi DENNO Masahiro MORIKURA Takatoshi SUGIYAMA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2010/12/01 Vol. E93-B No. 12 pp. 3371-3380 Type of Manuscript: Special Section PAPER (Special Section on Wireless Distributed Networks) Category: Keyword: single-relay multi-user networks, network coding, CSMA/CA, CW_min optimization, wireless throughput, fairness,
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Plane-Wave and Vector-Rotation Approximation Technique for Reducing Computational Complexity to Simulate MIMO Propagation Channel Using Ray-Tracing Wataru YAMADA Naoki KITA Takatoshi SUGIYAMA Toshio NOJIMA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2009/12/01 Vol. E92-B No. 12 pp. 3850-3860 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: MIMO propagation channel prediction technique, ray-tracing method, imaging algorithm, substitution technique,
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Implementation and Performance Evaluation of Simple SDM-COFDM Prototype Using Propagation Coefficient Matrix Tracking for Fast Fading MIMO Channels Takatoshi SUGIYAMA Satoshi KUROSAKI Daisei UCHIDA Yusuke ASAI Masahiro UMEHIRA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2005/01/01 Vol. E88-B No. 1 pp. 58-65 Type of Manuscript: Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part 1) Category: Space Division Multiplexing Keyword: SDM, OFDM, MIMO, ZF, frequency utilization efficiency,
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A Reduced-Complexity Signal Detection Scheme Employing ZF and K-Best Algorithms for OFDM/SDM Takafumi FUJITA Atsushi OHTA Takeshi ONIZAWA Takatoshi SUGIYAMA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2005/01/01 Vol. E88-B No. 1 pp. 66-75 Type of Manuscript: Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part 1) Category: Space Division Multiplexing Keyword: OFDM, SDM, MIMO, MLD, Zero-Forcing, K-best, M-algorithm, IEEE 802.11a,
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A SDM-COFDM Scheme Employing a Simple Feed-Forward Inter-Channel Interference Canceller for MIMO Based Broadband Wireless LANs Satoshi KUROSAKI Yusuke ASAI Takatoshi SUGIYAMA Masahiro UMEHIRA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2003/01/01 Vol. E86-B No. 1 pp. 283-290 Type of Manuscript: Special Section PAPER (Special Issue on Multiple Access and Signal Transmission Techniques for Future Mobile Communications) Category: Keyword: SDM-COFDM, MIMO, propagation matrix, likelihood-weighting, soft decision Viterbi decoding,
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OFDM/CDMA Technologies for Future Broadband Mobile Communication Systems Masahiro UMEHIRA Takatoshi SUGIYAMA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2002/12/01 Vol. E85-A No. 12 pp. 2804-2812 Type of Manuscript: INVITED PAPER (Special Section on Spread Spectrum Techniques and Applications) Category: Keyword: CDMA, OFDM, SDM, MIMO, link adaptation,
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An FFT Interference Detection Scheme for Interference Suppression in Digital Satellite Communication Systems Takatoshi SUGIYAMA Masanobu SUZUKI Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1997/09/25 Vol. E80-B No. 9 pp. 1352-1362 Type of Manuscript: PAPER Category: Satellite Communication Keyword: digital satellite communication, co-channel interference, interference suppression, notch filter, FEC, FFT,
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A Novel FEC Scheme for Differentially Detected QPSK Signals in Mobile Computing Using High-Speed Wireless Access Takatoshi SUGIYAMA Masahiro UMEHIRA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1997/08/25 Vol. E80-B No. 8 pp. 1153-1159 Type of Manuscript: Special Section PAPER (Special Issue on Mobile Computing) Category: Keyword: mobile computing, high-speed wireless access, differential detection, nonredundant error correction, double symbol error, parallel encoding random FEC, rician fading,
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A New AFC Circuit Employing Double-Product Type Frequency Discriminator in Very-Low CNR Environments Nobuaki MOCHIZUKI Takatoshi SUGIYAMA Masahiro UMEHIRA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1997/01/25 Vol. E80-B No. 1 pp. 25-32 Type of Manuscript: Special Section PAPER (Special Issue on Advances in Satellite Communications toward Multimedia Era) Category: Modem and Coding Keyword: multimedia satellite communication, high coding gain FEC, very-low CNR environments, AFC, double-product type frequency discriminator, click noise,
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A Half-Chip Offset QPSK Modulation CDMA Scheme Employing Differential Detection for Advanced Wireless LAN Systems Takatoshi SUGIYAMA Masato MIZOGUCHI Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1996/05/25 Vol. E79-B No. 5 pp. 693-700 Type of Manuscript: PAPER Category: Radio Communication Keyword: offset QPSK-CDMA, nonlinear channel, differential detection, forward error correction, time diversity, frequency utilization efficiency,
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An Integrated Interference Suppression Scheme with An Adaptive Equalizer for Digital Satellite Communication Systems Takatoshi SUGIYAMA Masanobu SUZUKI Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1996/02/25 Vol. E79-B No. 2 pp. 191-197 Type of Manuscript: PAPER Category: Satellite Communication Keyword: satellite communication, co-channel interference, interference suppression, notch filter, FEC, adaptive equalizer,
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A Frequency Utilization Ffficiency Improvement on Superposed SSMA-QPSK Signal Transmission over High Speed QPSK Signals in Nonlinear Channels Takatoshi SUGIYAMA Hiroshi KAZAMA Masahiro MORIKURA Shuji KUBOTA Shuzo KATO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1993/05/25 Vol. E76-B No. 5 pp. 480-487 Type of Manuscript: Special Section PAPER (Special Issue on Satellite Communications Networking and Applications) Category: Keyword: SSMA-QPSK signals, high speed QPSK signals, superposed transmission, FEC, interference cancellation, non-linear channel,
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