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SYSTEMS AND METHODS FOR SIGNAL MODULATION AND DEMODULATION USING PHASE

  • US 20090154589A1
  • Filed: 12/15/2008
  • Published: 06/18/2009
  • Est. Priority Date: 12/14/2007
  • Status: Active Grant
First Claim
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1. A system for recovering data from at least one signal, the system comprising:

  • an analog-to-digital converter (ADC) and in-phase/quadrature (IQ) generator component configured to sample a signal recovered from a communication medium on which the signal is propagating to generate a first signal sample and a second signal sample;

    a Fast Fourier Transform (FFT) component coupled to the ADC and IQ generator component, the FFT component being configured to process the first signal sample to generate a first signal phase and process the second signal sample to generate a second signal phase; and

    a phase difference calculation component coupled to the FFT component, the phase difference calculation component being configured to;

    determine a phase difference between the first signal phase and the second signal phase;

    determine a bit value represented by the signal based on the phase difference; and

    output the bit value to an end device coupled to the phase difference calculation component.

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