Inventor
IWASAKI MOTOYA
JP48 patents
⚠️ This page may combine multiple inventors who share the name “IWASAKI MOTOYA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NEC CORP
40 patentsUS6993294B2Jan 31, 2006
Mobile communication system, communication control method, base station and mobile station to be used in the same
NEC CORP100 citations98
US5245612ASep 14, 1993
Spread packet communication system
NEC CORP89 citations95
US6249235B1Jun 19, 2001
Sampling frequency conversion apparatus and fractional frequency dividing apparatus for sampling frequency
NEC CORP30 citations92
US6016329AJan 18, 2000
Method and apparatus for preamble-less demodulation
NEC CORP21 citations92
US5838797ANov 17, 1998
Secure communication by encryption/decryption of vector at PSK modulation/detection stage
NEC CORP47 citations92
US5513222AApr 30, 1996
Combining circuit for a diversity receiving system
NEC CORP34 citations92
US5500878AMar 19, 1996
Automatic frequency control apparatus and method therefor
NEC CORP23 citations92
US5463401AOct 31, 1995
Method and arrangement of pointing an antenna beam to a stationary satellite
NEC CORP43 citations92
US5440267AAug 8, 1995
Demodulator
NEC CORP37 citations92
US5384552AJan 24, 1995
Clock recovery circuit for extracting clock information from a received baseband signal
NEC CORP20 citations92
US5276710AJan 4, 1994
Carrier frequency error detector capable of accurately detecting a carrier frequency error
NEC CORP40 citations92
US5157694AOct 20, 1992
Coherent psk demodulator using bit error rate and s/n ratio to establish synchronization
NEC CORP32 citations92
US5012491AApr 30, 1991
Preamable detection circuit for digital communications system
NEC CORP54 citations92
US6088411AJul 11, 2000
Method and apparatus for a unique word differential detection and demodulation using the unique word differential detection
NEC CORP21 citations86
US7564911B2Jul 21, 2009
Communication system and transmitter-receiver for use therewith
NEC CORP8 citations84
US7085311B2Aug 1, 2006
Apparatus and method for measuring SIR in CDMA communication system
NEC CORP13 citations84
US6990141B1Jan 24, 2006
Correlator
NEC CORP15 citations84
US8345563B2Jan 1, 2013
Wireless communication system, data transmission method for uplink thereof, base station device, and mobile station device
NEC CORP13 citations82
US4853642AAug 1, 1989
Phase controlled demodulator for digital communications system
NEC CORP20 citations82
US7599319B2Oct 6, 2009
Radio communications system and control method therefor
NEC CORP10 citations79
US7333562B2Feb 19, 2008
Nonlinear distortion compensating circuit
NEC CORP7 citations74
US6888812B1May 3, 2005
CDMA receiver
NEC CORP10 citations74
US6147632ANov 14, 2000
Sampling frequency conversion apparatus and fractional frequency dividing apparatus for sampling frequency conversion
NEC CORP13 citations74
US5912930AJun 15, 1999
Phase shift keying signal demodulation method and device
NEC CORP13 citations74
US5260896ANov 9, 1993
Adaptive filter and a method of preventing divergent behavior of the adaptive filter
NEC CORP11 citations74
US5148451ASep 15, 1992
Carrier regeneration device correctly operable in mobile satellite communication
NEC CORP17 citations74
US5128626AJul 7, 1992
Coherently demodulating arrangement including quasi-coherent demodulator for PSK signals
NEC CORP14 citations74
US7369580B2May 6, 2008
Amplitude limiting circuit and CDMA communication apparatus
NEC CORP2 citations63
US7068713B2Jun 27, 2006
Digital filter circuit
NEC CORP2 citations63
US6232761B1May 15, 2001
Frequency estimating system
NEC CORP4 citations63
US6108679AAug 22, 2000
Discontinuous signal interpolation circuit
NEC CORP4 citations63
US5363415ANov 8, 1994
Carrier regenerating device correctly operable in mobile satellite communication
NEC CORP5 citations63
US11575414B2Feb 7, 2023
First communication apparatus, second communication apparatus, method, program, recording medium, and system
NEC CORP0 citations62
US11456897B2Sep 27, 2022
Communication apparatus, method, program, and recording medium
NEC CORP0 citations62
US11165474B2Nov 2, 2021
First communication apparatus, second communication apparatus, method, program, recording medium, and system
NEC CORP1 citations62
US7620130B2Nov 17, 2009
Wireless diversity receiver using a combiner with control weights that are based on reported transmission power
NEC CORP4 citations60
US7583966B2Sep 1, 2009
Mobile communications system, radio network controller, and active set control method
NEC CORP6 citations60
US11343036B2May 24, 2022
Radio communication apparatus, method of processing reception signal, and non-transitory computer readable medium storing program
NEC CORP0 citations52
US9167566B2Oct 20, 2015
Wireless communication system, data transmission method for uplink thereof, base station device, and mobile station device
NEC CORP0 citations50
US6999734B2Feb 14, 2006
Nonlinear compensating circuit, base-station apparatus, and transmission power clipping method
NEC CORP0 citations42