IEICE SEARCH SYSTEM

Tomoki MURAKAMI

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,
	Summary \| Full Text:PDF(2.4MB)

On the Feasibility of an Adaptive Movable Access Point System in a Static Indoor WLAN Environment Tomoki MURAKAMI Shingo OKA Yasushi TAKATORI Masato MIZOGUCHI Fumiaki MAEHARA
Publication: Publication Date: 2018/07/01 Vol. E101-B No. 7 pp. 1693-1700 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: wireless local area network (WLAN) system, adaptive movable access point (AMAP) system, traffic offload, k-means method, time of arrival (ToA), receive signal strength indicator (RSSI), signal to interference and noise ratio (SINR),
	Summary \| Full Text:PDF(2.6MB)

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),
	Summary \| Full Text:PDF(2MB)

Weighted-Combining Calibration on Multiuser MIMO Systems with Implicit Feedback Hayato FUKUZONO Tomoki MURAKAMI Riichi KUDO Yasushi TAKATORI Masato MIZOGUCHI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2015/04/01 Vol. E98-B No. 4 pp. 701-713 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: multiple-input multiple-output (MIMO), channel reciprocity, implicit feedback, calibration, minimum mean square error (MMSE),
	Summary \| Full Text:PDF(2.6MB)

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,
	Summary \| Full Text:PDF(4.7MB)

Performance Evaluation of Interference-Aware Multi-Cell Beamforming for an Overlapping Cells Environment Tomoki MURAKAMI Riichi KUDO Takeo ICHIKAWA Naoki HONMA Masato MIZOGUCHI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2013/06/01 Vol. E96-B No. 6 pp. 1492-1501 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: MIMO, multi-cell beamforming, inter-cell interference (ICI), WLAN, decentralized control scheme,
	Summary \| Full Text:PDF(4.2MB)