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Orthogonal time frequency space communication system compatible with OFDM

  • US 10,404,514 B2
  • Filed: 06/27/2016
  • Issued: 09/03/2019
  • Est. Priority Date: 06/27/2015
  • Status: Active Grant
First Claim
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1. A method of receiving a modulated signal, the method comprising:

  • receiving a plurality of signal components of the modulated signal;

    generating, by performing an OFDM demodulation operation using the plurality of signal components, a plane of estimated time-frequency modulation symbols; and

    providing an estimated data frame by performing an inverse of a two dimensional time-frequency transformation with respect to the plane of estimated time-frequency modulation symbols,wherein the performing the inverse of the two dimensional time-frequency transformation includes performing a windowing operation and a symplectic Fourier transform; and

    wherein the windowing operation either uses a window that is matched to a transmitter-side window, selected to randomize phases of symbols in the modulated signal, or uses a 2D window function.

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