Patents Examined by Cong Van Than
  • Patent number: 6704552
    Abstract: A plurality of finger units despread a received signal with a first spread code to output pilot signals of a receiving channel which has been spread with the first spread code. An AFC unit despreads the received signal with a second spread code to output a pilot signal of an AFC channel which has been spread with the second spread code. An automatic frequency controller calculates a difference between an oscillating frequency of a oscillator and a frequency of the received signal for the channels based on the pilot signals of the receiving and AFC channels to supply a frequency control signal to the oscillator, whereby the oscillating frequency of the oscillator is controlled so that the oscillating frequency is substantially equal to the frequency of the received signal.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: March 9, 2004
    Assignee: NEC Corporation
    Inventor: Mariko Matsumoto