Patents by Inventor Kosei NISHIMURA

Kosei NISHIMURA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Radio communication circuit and radio communication device
    Patent number: 9209846
    Abstract: A radio communication circuit includes a transmitter that includes a modulator modulates a signal with a first modulation scheme and a power amplifier amplifies the signal modulated with the first modulation scheme and output the amplified signal and transmits the amplified signal, a receiver that includes a demodulator demodulates the signal output from the transmitter with a second modulation scheme that is different from the first modulation scheme, a pre-distortion compensator compensates occurred upon the amplification of the signal, of the signal input to the transmitter, based on the demodulated signal and a power controller controls supply of power to the receiver and the pre-distortion compensator and stop the supply of the power based on an average power level of the signal output from the transmitter and a peak-to-average power ratio that is a ratio of an instantaneous peak power level to the average power level.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: December 8, 2015
    Assignee: FUJITSU LIMITED
    Inventors: Youji Nakata, Setsuya Nagaya, Kosei Nishimura, Masaaki Saitou, Mikio Hayashihara, Atsushi Kudo
  • RADIO COMMUNICATION CIRCUIT AND RADIO COMMUNICATION DEVICE
    Publication number: 20150065061
    Abstract: A radio communication circuit includes a transmitter that includes a modulator modulates a signal with a first modulation scheme and a power amplifier amplifies the signal modulated with the first modulation scheme and output the amplified signal and transmits the amplified signal, a receiver that includes a demodulator demodulates the signal output from the transmitter with a second modulation scheme that is different from the first modulation scheme, a pre-distortion compensator compensates occurred upon the amplification of the signal, of the signal input to the transmitter, based on the demodulated signal and a power controller controls supply of power to the receiver and the pre-distortion compensator and stop the supply of the power based on an average power level of the signal output from the transmitter and a peak-to-average power ratio that is a ratio of an instantaneous peak power level to the average power level.
    Type: Application
    Filed: August 29, 2014
    Publication date: March 5, 2015
    Inventors: Youji NAKATA, Setsuya NAGAYA, Kosei NISHIMURA, Masaaki SAITOU, Mikio HAYASHIHARA, Atsushi KUDO