Transpositional modulation systems and methods
First Claim
1. A method of demodulating a signal, comprising the steps of:
- adding a third harmonic to a modulated signal;
detecting a peak amplitude of the modulated signal and the third harmonic;
generating, by a reference ramp generator, a reference ramp when the peak amplitude is detected;
detecting an inflection in the modulated signal and the third harmonic;
sampling the reference ramp when the inflection is detected to produce a sampled value; and
holding and outputting the sampled value.
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Accused Products
Abstract
Systems and methods for transpositional modulation and demodulation are provided. One such method for generating a signal includes the steps of providing a look-up table having a plurality of quarter-cycle waveforms, each of said quarter-cycle waveforms associated with a respective input level; receiving an input signal; and outputting quarter-cycle waveforms associated with levels of the received input signal. Systems for transpositional modulation are also provided. One such system for generating a signal includes a look-up table having a plurality of quarter-cycle waveforms. Each of the quarter-cycle waveforms are associated with a respective input level, and the look-up table is configured to receive an input signal, and output quarter-cycle waveforms associated with levels of the received input signal.
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Citations
4 Claims
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1. A method of demodulating a signal, comprising the steps of:
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adding a third harmonic to a modulated signal; detecting a peak amplitude of the modulated signal and the third harmonic; generating, by a reference ramp generator, a reference ramp when the peak amplitude is detected; detecting an inflection in the modulated signal and the third harmonic; sampling the reference ramp when the inflection is detected to produce a sampled value; and holding and outputting the sampled value. - View Dependent Claims (2)
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3. A system for demodulating a signal, comprising:
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a signal adder for adding a third harmonic to a modulated signal; a peak detector for detecting a peak amplitude of the modulated signal and the third harmonic; a reference ramp generator for generating a reference ramp when the peak amplitude is detected; an inflection detector for detecting an inflection in the modulated signal and the third harmonic; a sample and hold element for sampling the reference ramp when the inflection is detected to produce a sampled value; and hold and output the sampled value. - View Dependent Claims (4)
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Specification