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Signaling method in an OFDM multiple access system

  • US 8,295,154 B2
  • Filed: 06/10/2011
  • Issued: 10/23/2012
  • Est. Priority Date: 09/13/2000
  • Status: Expired due to Term
First Claim
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1. A processor-based apparatus for generating wireless communications, the processor-based apparatus comprising:

  • at least one first circuit configured to perform a Discrete Fourier Transform (DFT) on a discrete signal of complex data symbols to obtain a first frequency response vector of length M;

    a second circuit configured toperform an N-point Inverse DFT (IDFT) on a second frequency response vector of length N, generated from the first frequency response vector by inserting zero value symbols corresponding to tones not allocated to the apparatus, to obtain a vector of digital signal samples;

    a third circuit configured to pre-pend a cyclic prefix to the vector of digital signal samples; and

    a fourth circuit configured to generate a signal representing the vector of digital signal samples with pre-pended cyclic prefix for transmission.

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