Akihiro KAJIWARA


An Empirical Study on Multiple Target Tracking Using Ultra Wideband Automotive Radar
Isamu MATSUNAMI  Ryohei NAKAMURA  Akihiro KAJIWARA 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2012/12/01
Vol. J95-B  No. 12  pp. 1662-1667
Type of Manuscript: LETTER
Category: 
Keyword: 
UWBautomotive radarclutterHough transformweight pulse integration
  Summary |  Full Text(in Japanese):PDF (844.2KB)

An Empirical Study on Detection and Classification of Multiple target for Wideband Automotive Radar
Yuki OKAMOTO  Isamu MATSUNAMI  Akihiro KAJIWARA 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2012/08/01
Vol. J95-B  No. 8  pp. 976-979
Type of Manuscript: LETTER
Category: 
Keyword: 
UWB-radarmultiple-vehicle detectionclutterHough transformation
  Summary |  Full Text(in Japanese):PDF (578KB)

Intra-vehicle Wideband Radio Propagation Characteristics at 60 GHz Band
Ryohei NAKAMURA  Akihiro KAJIWARA 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2012/02/01
Vol. J95-B  No. 2  pp. 302-308
Type of Manuscript: Special Section PAPER (Special Issue on Student Research for Future Communication Technology)
Category: 
Keyword: 
vehicle60 GHzwidebanddelay characteristicsleakage
  Summary |  Full Text(in Japanese):PDF (885.9KB)

Clutter Suppression Using Weight Pulse Integration for Ultra-Wideband Vehicular Radar
Isamu MATSUNAMI  Akihiro KAJIWARA 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2011/04/01
Vol. J94-B  No. 4  pp. 655-659
Type of Manuscript: LETTER
Category: 
Keyword: 
ultra-wideband radiovehicular radarclutterpulse integration
  Summary |  Full Text(in Japanese):PDF (527.7KB)

Ultra-Wideband Radio Channel in Sedan Vehicle -- Effect of Passengers and Leakage from Vehicle Body --
Ryohei NAKAMURA  Youichiro NAKAHATA  Kyohei OHTA  Isamu MATSUNAMI  Akihiro KAJIWARA 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2011/02/01
Vol. J94-B  No. 2  pp. 300-303
Type of Manuscript: Special Section LETTER (Special Issue on Student Research Building the Future of Communication Technology)
Category: 
Keyword: 
vehiclewideband transmissioninterference
  Summary |  Full Text(in Japanese):PDF (709.6KB)

Ultra-Wideband Microwave Sensor Using Stepped-FM Scheme
Ryohei NAKAMURA  Akihiro KAJIWARA 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2011/02/01
Vol. J94-B  No. 2  pp. 274-282
Type of Manuscript: Special Section PAPER (Special Issue on Student Research Building the Future of Communication Technology)
Category: 
Keyword: 
stepped-fmsensoruwb-irspectrum hole
  Summary |  Full Text(in Japanese):PDF (1MB)

Emprical Study on RCS Characteristics by UWB Radar at Ka band
Isamu MATSUNAMI  Akihiro KAJIWARA 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2010/02/01
Vol. J93-B  No. 2  pp. 394-398
Type of Manuscript: Special Section PAPER (Special Issue on Student Research Contributing to Future Communication Technology)
Category: 
Keyword: 
wideband radarvehicle radarRCS
  Summary |  Full Text(in Japanese):PDF (423.3KB)

Ultra-Wideband Vehicular Radar Using Range Profile Matching Scheme
Isamu MATSUNAMI  Akihiro KAJIWARA 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2010/02/01
Vol. J93-B  No. 2  pp. 351-358
Type of Manuscript: Special Section PAPER (Special Issue on Student Research Contributing to Future Communication Technology)
Category: 
Keyword: 
vehicle radarcluttercorrelation
  Summary |  Full Text(in Japanese):PDF (878.8KB)

Wideband Radio Channel in a Long-Distance Bus
Youichiro NAKAHATA  Akihiro KAJIWARA 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2009/10/01
Vol. J92-B  No. 10  pp. 1716-1720
Type of Manuscript: LETTER
Category: 
Keyword: 
delay spreadexcess mean delaypropagation lossultra-wideband radio
  Summary |  Full Text(in Japanese):PDF (599.7KB)

Clutter Characteristics by UWB Radar at 24 GHz Band
Isamu MATSUNAMI  Youichiro NAKAHATA  Katsushi ONO  Akihiro KAJIWARA 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2009/01/01
Vol. J92-B  No. 1  pp. 363-366
Type of Manuscript: Special Section LETTER (Special Issue on Student Research for Future Communication Technology)
Category: 
Keyword: 
UWB radarclutterAIC
  Summary |  Full Text(in Japanese):PDF (288.3KB)

Effect of Multipath on Rake Reception for UWB-IR Communications
Isamu MATSUNAMI  Akihiro KAJIWARA 
Publication:   A - Abstracts of IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences (Japanese Edition)
Publication Date: 2007/07/01
Vol. J90-A  No. 7  pp. 597-604
Type of Manuscript: PAPER
Category: 
Keyword: 
UWB-IRmulti-path interferencecorrelationRake
  Summary |  Full Text(in Japanese):PDF (1.2MB)

Study on Indoor Human Body Detection Using UWB-IR
Keiji TERASAKA  Kenji HIGASHIKATURAGI  Isamu MATSUNAMI  Akihiro KAJIWARA 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2007/01/01
Vol. J90-B  No. 1  pp. 97-100
Type of Manuscript: LETTER
Category: 
Keyword: 
UWB-IRdelay power profilesecurity sensor
  Summary |  Full Text(in Japanese):PDF (372KB)

Experimental Evaluation of In-Vehicle UWB Radio Propagation Characteristics
Yusuke KATAYAMA  Keiji TERASAKA  Kenji HIGASHIKATSURAGI  Isamu MATSUNAMI  Akihiro KAJIWARA 
Publication:   B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)
Publication Date: 2006/09/01
Vol. J89-B  No. 9  pp. 1815-1819
Type of Manuscript: Special Section LETTER (Special Issue on Design, Analysis and Measurement Techniques in Antennas and Propagation to Meet Expanding Applications of Radio Systems)
Category: 
Keyword: 
UWBpropagation delayvehicle
  Summary |  Full Text(in Japanese):PDF (1.6MB)