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Signaling method in an OFDM multiple access system

  • US 7,990,844 B2
  • Filed: 04/13/2010
  • Issued: 08/02/2011
  • Est. Priority Date: 09/13/2000
  • Status: Expired due to Term
First Claim
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1. An apparatus for generating a vector of digital signal samples (S), the apparatus comprising:

  • hardware means for receiving a discrete signal of complex data symbols (C), calculating frequency responses (A1, . . . AM) corresponding to tones (f(1), . . . f(M)), through an M-point discrete Fourier transform (DFT), and outputting a vector of length M;

    means for expanding the output vector to a new vector of length N, and means for inserting zero-value symbols corresponding to tones other than tones allocated to a transmitter; and

    means for performing an N-point inverse discrete Fourier transform (IDFT) operation on the new vector after zero insertion to obtain the vector of digital signal samples (S), and generating a low peak-to-average OFDM-based signal using the vector of digital signal samples (S) for transmission.

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