Patents Assigned to FUJTISU SEMICONDUCTOR LIMITED
  • Publication number: 20130301759
    Abstract: A receiving device for receiving OFDM signals in which arrangement of pilot signals changes with symbol time, includes: an inverse Fourier transform unit configured to calculate an impulse response by performing an inverse Fourier transform on pilot signals included in a received signal; a first Doppler frequency estimation unit configured to estimate a first Doppler frequency from a phase rotation amount at peak positions between impulse responses of pilot signals of different subcarriers of the impulse responses; a second Doppler frequency estimation unit configured to estimate a second Doppler frequency from a phase rotation amount between impulse responses of pilot signals of the same subcarrier of the impulse responses; and a Doppler frequency selection unit configured to select one of the first and the second Doppler frequency estimated by the first and the second Doppler frequency estimation unit so as to reduce influence of a multipath.
    Type: Application
    Filed: April 25, 2013
    Publication date: November 14, 2013
    Applicants: FUJTISU SEMICONDUCTOR LIMITED, FUJITSU LIMITED
    Inventors: Masataka Umeda, Naoto Adachi