Transpositional modulation systems and methods
AssigneeTM IP Holdings, LLC
InventorRichard C. Gerdes
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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.
Claims9
A method of generating a signal, comprising the steps of:
- receiving a carrier signal;
- receiving an input signal, wherein said input signal conveys a modulation level;
- generating quarter-cycle waveforms based on the input signal;
- and
- assembling the generated quarter-cycle waveforms into a continuous output signal, wherein the output signal includes a first inflection between adjacent quarter-cycles forming a segment of the output signal between a first negative peak and a positive peak, and wherein the output signal includes a second inflection between adjacent quarter-cycles forming a segment of the output signal between the positive peak and a second negative peak, wherein said first and second inflections represent said modulation level.
A system for generating a signal, comprising:
- a waveform generator configured to generate quarter-cycle waveforms based on a received carrier signal and a received input signal, wherein said input signal conveys a modulation level;
- and
- an analog gate for assembling the generated quarter-cycle waveforms into a continuous output signal, wherein the output signal includes a first inflection between adjacent quarter-cycles forming a segment of the output signal between a first negative peak and a positive peak, and wherein the output signal includes a second inflection between adjacent quarter-cycles forming a segment of the output signal between the positive peak and a second negative peak, wherein said first and second inflections represent said modulation level.
Dependencies are inferred from the claim text.