IEICE Trans

Koichi ISHIHARA

Dynamic Group-Based Antenna Selection for Uplink Multi-User MIMO in Distributed Antenna System Sho YOSHIDA Kentaro NISHIMORI Soichi ITO Tomoki MURAKAMI Koichi ISHIHARA Yasushi TAKATORI
Publication: Publication Date: 2018/07/01 Vol. E101-B No. 7 pp. 1552-1560 Type of Manuscript: Special Section PAPER (Special Section on Communication Quality in Wireless Networks) Category: Keyword: multi-user multiple-input multiple-output (MU-MIMO), distributed antenna system (DAS), antenna selection, ray-tracing method, cable loss,
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CSI Feedback Reduction Method for Downlink Multiuser MIMO Transmission Using Dense Distributed Antenna Selection Tomoki MURAKAMI Koichi ISHIHARA Yasushi TAKATORI Masato MIZOGUCHI Kentaro NISHIMORI
Publication: Publication Date: 2018/02/01 Vol. E101-B No. 2 pp. 426-433 Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2016) Category: MIMO Keyword: multiuser multiple input multiple output (MU-MIMO), antenna selection, wireless LAN (WLAN), distributed antenna system (DAS), channel state information (CSI),
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Wide-Range and Fast-Tracking Non-Data-Aided Frequency Offset Estimator for QAM Optical Coherent Receivers Tadao NAKAGAWA Takayuki KOBAYASHI Koichi ISHIHARA Yutaka MIYAMOTO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2016/07/01 Vol. E99-B No. 7 pp. 1416-1425 Type of Manuscript: PAPER Category: Fiber-Optic Transmission for Communications Keyword: optical fiber communication, optical receivers, quadrature amplitude modulation, digital signal processing, frequency offset estimation,
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Maximum Likelihood Demodulators and Their Evaluations on Amplify-and-Forward Cooperative OFDM-Based Wireless LAN Systems Hayato FUKUZONO Yusuke ASAI Riichi KUDO Koichi ISHIHARA Masato MIZOGUCHI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2014/11/01 Vol. E97-B No. 11 pp. 2435-2448 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: cooperative communication, orthogonal frequency division multiplexing (OFDM), wireless local area network (LAN), amplify-and-forward (AF) mode, Golden code, Alamouti code, log likelihood ratio,
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Implementation and Evaluation of Real-Time Distributed Zero-Forcing Beamforming for Downlink Multi-User MIMO Systems Tomoki MURAKAMI Koichi ISHIHARA Riichi KUDO Yusuke ASAI Takeo ICHIKAWA Masato MIZOGUCHI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2013/10/01 Vol. E96-B No. 10 pp. 2521-2529 Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2012) Category: Wireless Communication Technologies Keyword: multiuser MIMO, inter-cell interference, distributed system, wireless LAN system,
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Game-Theoretic Analysis of Multibandwidth Channel Selection by Coordinated APs in WLANs Kohei HANADA Koji YAMAMOTO Masahiro MORIKURA Koichi ISHIHARA Riichi KUDO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2013/06/01 Vol. E96-B No. 6 pp. 1277-1287 Type of Manuscript: Special Section PAPER (Special Section on Heterogeneous Networks for Future Cellular Systems) Category: Keyword: wireless LAN, multibandwidth, channel selection, IEEE 802.11ac, overlapping BSS, game theory,
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A Band-Divided Receiver Prototype for Wideband Optical Signals Munehiro MATSUI Riichi KUDO Yasushi TAKATORI Tadao NAKAGAWA Koichi ISHIHARA Masato MIZOGUCHI Takayuki KOBAYASHI Yutaka MIYAMOTO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2011/07/01 Vol. E94-B No. 7 pp. 1801-1808 Type of Manuscript: Special Section PAPER (Joint Special Section on Opto-electronics and Communications for Future Optical Network) Category: Keyword: coherent receiver, analog to digital converter, OFDM, real-time, heterodyne receiver,
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A Novel Dynamic Channel Access Scheme Using Overlap FFT Filter-Bank for Cognitive Radio Motohiro TANABE Masahiro UMEHIRA Koichi ISHIHARA Yasushi TAKATORI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2009/12/01 Vol. E92-B No. 12 pp. 3589-3596 Type of Manuscript: Special Section PAPER (Special Section on Dynamic Spectrum Access) Category: Spectrum Allocation Keyword: dynamic spectrum access, channel access, overlap FFT, filter-bank,
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Frequency-Domain Equalization for Coherent Optical Single-Carrier Transmission Systems Koichi ISHIHARA Takayuki KOBAYASHI Riichi KUDO Yasushi TAKATORI Akihide SANO Yutaka MIYAMOTO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2009/12/01 Vol. E92-B No. 12 pp. 3736-3743 Type of Manuscript: PAPER Category: Fiber-Optic Transmission for Communications Keyword: frequency-domain equalization (FDE), coherent optical transmission, chromatic dispersion (CD), polarization mode dispersion (PMD), digital signal processing (DSP),
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Overlap Frequency-Domain Multiuser Detection for Asynchronous Uplink Multiuser MIMO-OFDM Systems Koichi ISHIHARA Yasushi TAKATORI Kentaro NISHIMORI Kazuyasu OKADA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2009/05/01 Vol. E92-B No. 5 pp. 1582-1588 Type of Manuscript: Special Section PAPER (Special Section on Radio Access Techniques for 3G Evolution) Category: Keyword: multiuser MIMO (MU-MIMO), multiuser detection (MUD), OFDM, uplink, timing offset, inter-block interference (IBI),
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New Robust Beamforming Method for Frequency Offsets in Uplink Multiuser OFDM-MIMO Yasushi TAKATORI Riichi KUDO Atsushi OHTA Koichi ISHIHARA Kentaro NISHIMORI Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2007/09/01 Vol. E90-B No. 9 pp. 2312-2320 Type of Manuscript: Special Section PAPER (Special Section on 2006 International Symposium on Antennas and Propagation) Category: Smart Antennas Keyword: multiuser MIMO, uplink, beamforming, frequency offset,
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Frequency-Domain Multi-Stage Soft Interference Cancellation for DS-CDMA Uplink Signal Transmission Koichi ISHIHARA Kazuaki TAKEDA Fumiyuki ADACHI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2007/05/01 Vol. E90-B No. 5 pp. 1152-1161 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: DS-CDMA, frequency-domain equalization (FDE), MUI cancellation, multi-user detection (MUD),
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Iterative Channel Estimation for Frequency-Domain Equalization of DSSS Signals Koichi ISHIHARA Kazuaki TAKEDA Fumiyuki ADACHI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2007/05/01 Vol. E90-B No. 5 pp. 1171-1180 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: DSSS, frequency-domain equalization (FDE), channel estimation,
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Iterative Frequency-Domain Soft Interference Cancellation for Multicode DS- and MC-CDMA Transmissions and Performance Comparison Koichi ISHIHARA Kazuaki TAKEDA Fumiyuki ADACHI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2006/12/01 Vol. E89-B No. 12 pp. 3344-3355 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: DS-CDMA, MC-CDMA, frequency-domain equalization (FDE), multicode, interference cancelation,
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Frequency-Domain ICI Cancellation with MMSE Equalization for DS-CDMA Downlink Kazuaki TAKEDA Koichi ISHIHARA Fumiyuki ADACHI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2006/12/01 Vol. E89-B No. 12 pp. 3335-3343 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: DS-CDMA, frequency-domain equalization, MMSE, ICI cancellation,
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Pilot-Assisted Decision Feedback Channel Estimation for STTD in OFDM Mobile Radio Koichi ISHIHARA Kazuaki TAKEDA Fumiyuki ADACHI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2005/02/01 Vol. E88-B No. 2 pp. 561-567 Type of Manuscript: Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part2) Category: Keyword: pilot, decision feedback, channel estimation, OFDM, STTD,
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