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Receiver and method for compensating for frequency offset of receiving signal in multi-band OFDM scheme

  • US 20080095250A1
  • Filed: 02/12/2007
  • Published: 04/24/2008
  • Est. Priority Date: 10/18/2006
  • Status: Active Grant
First Claim
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1. A receiver for compensating for a frequency offset of a received signal in a multiband Orthogonal Frequency Division Multiplexing (OFDM) scheme, the receiver comprising:

  • a numerically controlled oscillator (NCO) which generates a first compensation signal by processing an input signal in a time domain based on a first carrier frequency offset estimated in the time domain, and a second carrier frequency offset estimated in a frequency domain;

    a sampling frequency offset tracking (SFOT) unit which generates a second compensation signal by estimating a sampling frequency offset from frequency domain pilot symbols which are contained in the first compensation signal; and

    a carrier frequency offset tracking (CFOT) unit which estimates the second carrier frequency offset by using pilot symbols which are contained in the second compensation signal.

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