Inventor
TSUMURA SOICHI
JP26 patents
⚠️ This page may combine multiple inventors who share the name “TSUMURA SOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NEC CORP
24 patentsUS7403789B2Jul 22, 2008
Synchronization establishment between a mobile station and base station system and method used for them
NEC CORP41 citations92
US7356022B2Apr 8, 2008
Mobile communication system, mobile station, base station, and packet communication method used therefor
NEC CORP30 citations92
US6781974B1Aug 24, 2004
Method of assigning frequency using propagation loss
NEC CORP31 citations92
US6580762B1Jun 17, 2003
Rate matching method
NEC CORP20 citations92
US6574200B1Jun 3, 2003
CDMA receiver comprising a synchronous timing notifying section capable of reaching low consumption of current
NEC CORP21 citations92
US6044253AMar 28, 2000
Method and apparatus using first and second variable gain control circuits to reduce cross modulation in a radio receiver
NEC CORP42 citations92
US5883553AMar 16, 1999
Filter unit adapted for miniaturization and for selecting a particular signal where a plurality of signals different in bandwidth coexist
NEC CORP29 citations92
US5831477ANov 3, 1998
Power amplifier system with variable output
NEC CORP50 citations92
US5796306AAug 18, 1998
Wide range variable output amplifier apparatus with high efficiency
NEC CORP28 citations92
US5550506AAug 27, 1996
DQPSK demodulator capable of improving a symbol error rate without decreasing a transmission rate
NEC CORP26 citations92
US7574226B2Aug 11, 2009
System and method for mobile communication
NEC CORP11 citations84
US6075978AJun 13, 2000
Automatic gain control system and method of automatic gain control
NEC CORP18 citations84
US5748129AMay 5, 1998
Analog to digital converter circuit
NEC CORP18 citations84
US7209762B2Apr 24, 2007
Mobile radio communication system and base station, and mobile radio communication method used therefor
NEC CORP9 citations74
US6912259B1Jun 28, 2005
Interpolation synchronous detection method and radio communication system
NEC CORP9 citations74
US6690716B1Feb 10, 2004
Correlator for realizing low current consumption
NEC CORP6 citations74
US5977839ANov 2, 1999
Compensated frequency source with latched temperature compensation, and method for it's control
NEC CORP13 citations74
US5918166AJun 29, 1999
Level control circuit for portable radio communication apparatus
NEC CORP12 citations74
US5710795AJan 20, 1998
Received signal decision apparatus for digital modulated signal receiver
NEC CORP13 citations74
US5511097AApr 23, 1996
Delay detection circuit
NEC CORP11 citations74
US5272447ADec 21, 1993
Demodulator and demodulation method for a digital phase modulated signal
NEC CORP7 citations74
US6754257B1Jun 22, 2004
Frame timing synchronization method
NEC CORP3 citations63
US6553056B1Apr 22, 2003
CDMA receiver with a reduced number of required high speed adders
NEC CORP2 citations63
US10469889B2Nov 5, 2019
Information distribution device, information reception device, system, program, and method
NEC CORP0 citations38