Hisato IWAI


Group Secret Key Agreement Based on Radio Propagation Characteristics in Wireless Relaying Systems
Takayuki SHIMIZU  Hisato IWAI  Hideichi SASAOKA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/07/01
Vol. E95-B  No. 7  pp. 2266-2277
Type of Manuscript: PAPER
Category: Fundamental Theories for Communications
Keyword: 
wireless securitysecret key agreementradio propagationmultiple terminalswireless relaying system
  Summary |  Full Text:PDF (1.1MB)

Self-Organizing Location Estimation Method Using Received Signal Strength
Yasuhisa TAKIZAWA  Peter DAVIS  Makoto KAWAI  Hisato IWAI  Akira YAMAGUCHI  Sadao OBANA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2006/10/01
Vol. E89-B  No. 10  pp. 2687-2695
Type of Manuscript: Special Section PAPER (Special Section on Mobile Multimedia Communications)
Category: 
Keyword: 
positioning systemad hoc networksself-organizing mapscontext-awareubiquitous computing
  Summary |  Full Text:PDF (486.8KB)

A New Sampling Frequency Selection Scheme in Undersampling Systems
Yoshio KUNISAWA  Naohiro SAHARA  Hiroshi SHIRAI  Hisato IWAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/11/01
Vol. E88-B  No. 11  pp. 4170-4175
Type of Manuscript: Special Section PAPER (Special Section on Software Defined Radio Technology and Its Applications)
Category: 
Keyword: 
software defined radioundersamplingsampling frequencyRF sampling
  Summary |  Full Text:PDF (540.7KB)

Expectations on Software Defined Radio (SDR) in Standardization Fora on Future Mobile Communication Systems
Fumio WATANABE  Masayoshi OHASHI  Hajime NAKAMURA  Hisato IWAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/12/01
Vol. E86-B  No. 12  pp. 3366-3373
Type of Manuscript: INVITED PAPER (Special Issue on Software Defined Radio Technology and Its Applications)
Category: 
Keyword: 
software defined radio (SDR)mobile communication systemsIMT-2000systems beyond IMT-2000
  Summary |  Full Text:PDF (1.4MB)

Analysis of Cycle Slip in Clock Recovery on Frequency-Selective Nakagami-Rice Fading Channels Based on the Equivalent Transmission-Path Model
Yoshio KARASAWA  Tomonori KURODA  Hisato IWAI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1996/12/20
Vol. E79-B  No. 12  pp. 1900-1910
Type of Manuscript: PAPER
Category: Radio Communication
Keyword: 
frequency-selective fadingNakagami-Rice fadingcycle slipclock recoveryequivalent transmission-path model
  Summary |  Full Text:PDF (813.4KB)

The Theoretical Foundation and Applications of Equivalent Transmission-Path Model for Assessing Wideband Digital Transmission Characteristics in Nakagami-Rice Fading Environments
Hisato IWAI  Yoshio KARASAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1996/09/20
Vol. E79-B  No. 9  pp. 1205-1214
Type of Manuscript: Special Section PAPER (Special Issue on Personal Communications)
Category: Radio propagation and channel modeling
Keyword: 
mobile propagation environmentswideband digital transmission characteristicsNakagami-Rice fadingBER characteristicsintersymbol interference
  Summary |  Full Text:PDF (791KB)

Wideband Propagation Model for the Analysis of the Effect of the Multipath Fading on the Near-Far Problem in CDMA Mobile Radio Systems
Hisato IWAI  Yoshio KARASAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1993/02/20
Vol. E76-B  No. 2  pp. 103-112
Type of Manuscript: Special Section PAPER (Special Issue on Land Mobile/Portable Propagation)
Category: 
Keyword: 
propagation modelCDMAmobile radiosimulation method
  Summary |  Full Text:PDF (793.8KB)

A Fading Reduction Technique Using Interleave-Aided Open Loop Space Diversity for Digital Maritime-Satellite Communications
Hisato IWAI  Masayuki YASUNAGA  Yoshio KARASAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1991/10/20
Vol. E74-B  No. 10  pp. 3286-3294
Type of Manuscript: Special Section PAPER (Special Issue on Mobile Communication Antennas)
Category: 
Keyword: 
  Summary |  Full Text:PDF (748.1KB)