Systems and methods for signal modulation and demodulation using phase

A system for recovering data from at least two signals, the system comprising:

• an analog-to-digital converter (ADC) and in-phase/quadrature (IQ) generator component configured to sample a first signal modulated by a first technique to generate a plurality of first signal samples and sample a second signal modulated by a second technique to generate a plurality of second signal samples, the first signal and the second signal being recovered from a communication medium on which the first signal and the second signal are propagating;
• a Fast Fourier Transform (FFT) component coupled to the ADC and IQ generator component, the FFT component being configured to process the plurality of first signal samples to generate at least two first signal phases and process the plurality of second signal samples to generate at least two second signal phases, wherein processing the plurality of first signal samples at least partially overlaps processing the plurality of second signal samples;
• a phase difference calculation component coupled to the FFT component, the phase difference calculation component being configured to determine a first signal bit value based on a phase difference between the at least two first signal phases and output the first signal bit value;
• and
• a demodulator coupled to the FFT component, the demodulator being configured to demodulate the second signal using the at least two second signal phases to determine a second signal bit value and output the second signal bit value.

A method for recovering data from at least one signal, the method comprising:

• sampling a signal recovered from a communication medium on which the signal is propagating to generate a first signal sample and a second signal sample;
• processing the first signal sample to generate a first signal phase;
• processing the second signal sample to generate a second signal phase;
• determining a phase difference between the first signal phase and the second signal phase;
• determining a bit value represented by the signal based on the phase difference;
• and
• outputting the bit value.