Ryuhei FUNADA


Design of the Start-Frame-Delimiter Pair for 802.15 Smart Utility Network System
Liru LU Hiroshi HARADA Ryuhei FUNADA Chin-Sean SUM 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/03/01
Vol. E96-B  No. 3  pp. 730-736
Type of Manuscript:  PAPER
Category: Transmission Systems and Transmission Equipment for Communications
Keyword: 
synchronizationstart-frame-delimitercorrelatorsmart utility networks
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MAC Development and Enhancement of IEEE 802.15.3c WPAN Realizing Gbps Throughput
Chang-Woo PYO Zhou LAN Fumihide KOJIMA Ryuhei FUNADA Hiroshi HARADA Shuzo KATO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/11/01
Vol. E94-B  No. 11  pp. 3065-3076
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
GbpsIEEE 802.15.3cMAC throughputWPAN
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Throughput and Error Analysis of a Space-Time Resource Management Scheme for Multi-Gbps Millimeter-Wave WPAN System
Chin-Sean SUM Mohammad Azizur RAHMAN Zhou LAN Ryuhei FUNADA Junyi WANG Tuncer BAYKAS Hiroshi HARADA Shuzo KATO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/11/01
Vol. E92-A  No. 11  pp. 2659-2668
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
space-timeresource managementmillimeter-wavemulti-GbpsWPANcross layer
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Error Probability of MRC in Frequency Selective Nakagami Fading in the Presence of CCI and ACI
Mohammad Azizur RAHMAN Chin-Sean SUM Ryuhei FUNADA Shigenobu SASAKI Tuncer BAYKAS Junyi WANG Hiroshi HARADA Shuzo KATO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/11/01
Vol. E92-A  No. 11  pp. 2679-2687
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
maximal ratio combining (MRC)frequency selective Nakagami fadinginter-symbol interference (ISI)co-channel interference (CCI)adjacent channel interference (ACI)
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A Novel Method of Estimating the Signal-to-Interference Ratio for One-Cell-Frequency-Reuse OF/TDMA Systems
Masafumi MORIYAMA Hiroshi HARADA Seiichi SAMPEI Ryuhei FUNADA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/01/01
Vol. E91-B  No. 1  pp. 247-257
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
OF/TDMAone-cell-frequency-reuseSIRAMCMIMOcarrier interferometry
 Summary | Full Text:PDF(1.8MB)

A Complexity-Reduced Time Alignment Control in Uplink Dynamic Parameter Controlled OF/TDMA
Ryota KIMURA Ryuhei FUNADA Hiroshi HARADA Shigeru SHIMAMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2006/08/01
Vol. E89-B  No. 8  pp. 2196-2207
Type of Manuscript:  PAPER
Category: Terrestrial Radio Communications
Keyword: 
orthogonal frequency division multiple access (OFDMA)dynamic parameter controlled orthogonal frequency and time division multiple access (DPC-OF/TDMA)propagation delaytime alignment controltiming synchronizationcomplexity reduction
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A Timing Synchronization Method with Low-Volume DSP for OFDM Packet Transmission Systems
Ryota KIMURA Ryuhei FUNADA Hiroshi HARADA Manabu SAWADA Shoji SHINODA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/07/01
Vol. E88-A  No. 7  pp. 1912-1920
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: Wireless Communication Technology
Keyword: 
OFDMtiming synchronizationpacket transmission systemDSP
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Performance Evaluation of Time Alignment Control under High-Mobility Environment for Dynamic Parameter Controlled OF/TDMA
Ryota KIMURA Ryuhei FUNADA Hiroshi HARADA Shoji SHINODA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/02/01
Vol. E88-B  No. 2  pp. 541-551
Type of Manuscript:  Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part2)
Category: 
Keyword: 
OFDMAdynamic parameter controlled OF/TDMAtime alignment controltiming synchronizationmultiple access interferenceinitial registration
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A Channel Estimation Method for a Highly Mobile OFDM Wireless Access System
Ryuhei FUNADA Hiroshi HARADA Yukiyoshi KAMIO Shoji SHINODA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/01/01
Vol. E88-B  No. 1  pp. 282-291
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
OFDMchannel estimationtime-varying fadingIEEE 802.11a
 Summary | Full Text:PDF(1.3MB)

Performance Improvement of Decision-Directed OFDM Channel Estimation in a Fast Fading Environment
Ryuhei FUNADA Hiroshi HARADA Shoji SHINODA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/08/01
Vol. E87-A  No. 8  pp. 1994-2001
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: Signal Processing for Communications
Keyword: 
COFDMdecision-directed channel estimationfast fadingIEEE 802.11a
 Summary | Full Text:PDF(1.3MB)