Takahiro ASAI


Radio Resource Management Based on User and Network Characteristics Considering 5G Radio Access Network in a Metropolitan Environment
Akira KISHIDA Yoshifumi MORIHIRO Takahiro ASAI 
Publication:   
Publication Date: 2017/08/01
Vol. E100-B  No. 8  pp. 1352-1365
Type of Manuscript:  Special Section PAPER (Special Section on Radio Access Technologies for 5G Mobile Communications System)
Category: Terrestrial Wireless Communication/Broadcasting Technologies
Keyword: 
5Gradio resource managementcell selectionmetropolitan environmenturban environmentHetNet
 Summary | Full Text:PDF(11.1MB)

Throughput Improvement of Mobile Cooperative WLAN Systems with Identifying and Management of Starved APs/UEs for 5G
Akiyoshi INOKI Hirantha ABEYSEKERA Munehiro MATSUI Kenichi KAWAMURA Takeo ICHIKAWA Yasushi TAKATORI Masato MIZOGUCHI Akira KISHIDA Yoshifumi MORIHIRO Takahiro ASAI Yukihiko OKUMURA 
Publication:   
Publication Date: 2017/08/01
Vol. E100-B  No. 8  pp. 1366-1376
Type of Manuscript:  Special Section PAPER (Special Section on Radio Access Technologies for 5G Mobile Communications System)
Category: Terrestrial Wireless Communication/Broadcasting Technologies
Keyword: 
5Gwireless LANthroughput starvationCSMA/CA
 Summary | Full Text:PDF(2.8MB)

Performance of Interference Rejection Combining Receiver to Suppress Inter-Cell Interference in LTE-Advanced Downlink
Yusuke OHWATARI Nobuhiko MIKI Takahiro ASAI Tetsushi ABE Hidekazu TAOKA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/12/01
Vol. E94-B  No. 12  pp. 3362-3369
Type of Manuscript:  Special Section PAPER (Special Section on Cooperative Communications for Cellular Networks)
Category: 
Keyword: 
LTE-Advancedinterference rejection combininginter-cell interferencecoordinated multipoint transmission/reception
 Summary | Full Text:PDF(2.9MB)

Investigation on Signaling Overhead for Mobility Management with Carrier Aggregation in LTE-Advanced
Kengo YAGYU Takeshi NAKAMORI Hiroyuki ISHII Mikio IWAMURA Nobuhiko MIKI Takahiro ASAI Junichiro HAGIWARA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/12/01
Vol. E94-B  No. 12  pp. 3335-3345
Type of Manuscript:  Special Section PAPER (Special Section on Cooperative Communications for Cellular Networks)
Category: 
Keyword: 
LTE-Advancedcarrier aggregationcomponent carrier managementcontrol overhead
 Summary | Full Text:PDF(2MB)

Analyses of Achievable Gains in Half Duplex MIMO Relaying Schemes Using Multiple Relay Nodes
Hui SHI Tetsushi ABE Takahiro ASAI Hitoshi YOSHINO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/09/01
Vol. E90-B  No. 9  pp. 2541-2551
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
MIMO wireless relay networksdistributed array gainintra-node array gainspatial multiplexing gainQR decompositionphase control
 Summary | Full Text:PDF(990.4KB)

Experimental Evaluations on Throughput Performance of Adaptive Modulation and Channel Coding and Hybrid ARQ in HSDPA
Takahiro ASAI Kenichi HIGUCHI Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/07/01
Vol. E86-A  No. 7  pp. 1656-1668
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
high speed downlink packet accessadaptive modulation and channel codinghybrid ARQ
 Summary | Full Text:PDF(2.4MB)

Field Test Results for a Beam and Null Simultaneous Steering S/T-Equalizer in Broadband Mobile Communication Environments
Takahiro ASAI Shigeru TOMISATO Tadashi MATSUMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/07/01
Vol. E84-B  No. 7  pp. 1760-1767
Type of Manuscript:  Special Section PAPER (Special Issue on Adaptive Array Antenna Techniques for Advanced Wireless Communications)
Category: Adaptive Algorithms and Experiments
Keyword: 
broadband mobile communicationmultipath fadingadaptive array antennaadaptive equalizer
 Summary | Full Text:PDF(786.5KB)

A Systolic Array RLS Processor
Takahiro ASAI Tadashi MATSUMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/05/01
Vol. E84-B  No. 5  pp. 1356-1361
Type of Manuscript:  PAPER
Category: Terrestrial Radio Communications
Keyword: 
RLS algorithmchannel estimationQR decompositionparallel pipelined processingASIC
 Summary | Full Text:PDF(758.6KB)