Kazuhiro TAKAYA


Power Saving Control Method for Battery-Powered Portable Wireless LAN Access Points in an Overlapping BSS Environment
Masakatsu OGAWA Takefumi HIRAGURI Kentaro NISHIMORI Naoki HONMA Kazuhiro TAKAYA Kazuo MURAKAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/03/01
Vol. E94-B  No. 3  pp. 658-666
Type of Manuscript:  Special Section PAPER (Special Section on Information and Communication Technologies for Next-generation Mobile Multimedia Life)
Category: 
Keyword: 
IEEE802.11power savingportable access pointoverlapping BSS
 Summary | Full Text:PDF(2.2MB)

Transmission History Based Distributed Adaptive Contention Window Adjustment Algorithm Cooperating with Automatic Rate Fallback for Wireless LANs
Masakatsu OGAWA Takefumi HIRAGURI Kentaro NISHIMORI Kazuhiro TAKAYA Kazuo MURAKAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/08/01
Vol. E93-B  No. 8  pp. 2063-2072
Type of Manuscript:  Special Section PAPER (Special Section on Implementation, Experiments, and Practice for Ad Hoc and Mesh Networks)
Category: 
Keyword: 
IEEE 802.11CSMA/CAcontention window adjustmentautomatic rate fallback
 Summary | Full Text:PDF(1.2MB)

Characteristics of Interference between Direct-Sequence Systems and Frequency-Hopping Systems of 2.4-GHz-Band Mid-Speed Wireless LANs
Kazuhiro TAKAYA Yuji MAEDA Nobuo KUWABARA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/02/01
Vol. E84-B  No. 2  pp. 204-212
Type of Manuscript:  PAPER
Category: Wireless Communication Technology
Keyword: 
2.4-GHz-band mid-speed wireless LANinterferencedirect-sequencefrequency-hopping
 Summary | Full Text:PDF(167.6KB)

Requirements for Controlling Coverage of 2.4-GHz-Band Wireless LANs by Using Partitions with Absorbing Board
Yuji MAEDA Kazuhiro TAKAYA Nobuo KUWABARA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/03/25
Vol. E83-B  No. 3  pp. 525-531
Type of Manuscript:  Special Section PAPER (Special Issue on Recent Progress in Electromagnetic Compatibility Technology)
Category: EMC Simulation
Keyword: 
electromagnetic absorbing boardindoor environment2.4-GHz ISM-band wireless LANtransmission lossdelay spreadthroughputBER
 Summary | Full Text:PDF(354.5KB)

Experimental Investigation of Propagation Characteristics and Performance of 2.4-GHz ISM-Band Wireless LAN in Various Indoor Environments
Yuji MAEDA Kazuhiro TAKAYA Nobuo KUWABARA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1999/10/25
Vol. E82-B  No. 10  pp. 1677-1683
Type of Manuscript:  PAPER
Category: Electromagnetic Compatibility
Keyword: 
propagation characteristicdelay spreadindoor environmentmultipath2.4-GHz ISM-band wireless LANthroughputBER
 Summary | Full Text:PDF(409.1KB)