Fumihiro YAMASHITA


Undesired Radiation Suppression Technique for Distributed Array Antenna by Antenna Positioning and Delay Signal Processing
Kouhei SUZUKI Hideya SO Daisuke GOTO Yoshinori SUZUKI Fumihiro YAMASHITA Katsuya NAKAHIRA Kiyoshi KOBAYASHI Takatoshi SUGIYAMA 
Publication:   
Publication Date: 2017/10/01
Vol. E100-B  No. 10  pp. 1959-1967
Type of Manuscript:  PAPER
Category: Satellite Communications
Keyword: 
distributed array antenna (DAA)undesired radiation suppressiondelay compensationsatellite communication
 Summary | Full Text:PDF(4.5MB)

Progress in and Prospects of On-Board Communication Equipment Technologies for Communications Satellites in Japan
Masazumi UEBA Akihiro MIYASAKA Yoshinori SUZUKI Fumihiro YAMASHITA 
Publication:   
Publication Date: 2017/09/01
Vol. E100-B  No. 9  pp. 1633-1643
Type of Manuscript:  INVITED SURVEY PAPER
Category: Satellite Communications
Keyword: 
on-board communication equipmentcommunications satellitesmulti-beam satellite communication systemtransponderantenna reflectoron board processorbeam forming
 Summary | Full Text:PDF(2.7MB)

Direct Spectrum Division Transmission for Highly Efficient Frequency Utilization in Satellite Communications
Jun-ichi ABE Fumihiro YAMASHITA Katsuya NAKAHIRA Kiyoshi KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/02/01
Vol. E95-B  No. 2  pp. 563-571
Type of Manuscript:  PAPER
Category: Satellite Communications
Keyword: 
satellite communicationsfilter bankdirect spectrum division transmissionspectrum editing technique
 Summary | Full Text:PDF(2.3MB)

Frequency Asynchronous Cross-Polarization Interference Canceller for Variable Polarization Frequency Division Multiplexing (VPFDM)
Fumihiro YAMASHITA Junichi ABE Kiyoshi KOBAYASHI Hiroshi KAZAMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/11/01
Vol. E92-B  No. 11  pp. 3365-3374
Type of Manuscript:  Special Section PAPER (Special Section on Satellite Communication Technologies in Conjunction with Main Topics of JC-SAT2008)
Category: 
Keyword: 
satellite communicationscross-polarizationfrequency offsetinterference canceller
 Summary | Full Text:PDF(2.2MB)

A Prototype Modem for Hyper-Multipoint Data Gathering SATCOM Systems --- A Group Modem Applicable to Arbitrarily and Dynamically Assigned FDMA Signals ---
Kiyoshi KOBAYASHI Fumihiro YAMASHITA Jun-ichi ABE Masazumi UEBA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/11/01
Vol. E92-B  No. 11  pp. 3318-3325
Type of Manuscript:  Special Section PAPER (Special Section on Satellite Communication Technologies in Conjunction with Main Topics of JC-SAT2008)
Category: 
Keyword: 
FFT filter bankgroup modemhyper-multipoint data gatheringarbitrary and dynamic frequency assignmentsatellite communication
 Summary | Full Text:PDF(1.7MB)

Seamless Symbol Rate Switching Scheme for Multi-Rate FDMA Modem
Fumihiro YAMASHITA Kiyoshi KOBAYASHI Kohei OHATA Masazumi UEBA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2006/02/01
Vol. E89-B  No. 2  pp. 545-555
Type of Manuscript:  PAPER
Category: Satellite Communication
Keyword: 
symbol ratesatellite communicationsseamless switchingmodem
 Summary | Full Text:PDF(2MB)

Enhanced Multi-Correlator AFC for Fast and Wide Range Frequency Acquisition
Fumihiro YAMASHITA Kiyoshi KOBAYASHI Yoshinori NAKASUGA Jin MITSUGI Masazumi UEBA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/08/01
Vol. E87-B  No. 8  pp. 2072-2081
Type of Manuscript:  Special Section PAPER (Special Section on Recent Fundamental Technologies for Broadband Satellite Communications)
Category: 
Keyword: 
AFCcorrelatorssatellite communicationslarge acquisition range
 Summary | Full Text:PDF(2.5MB)