Patent ID: 11876659
Assignee: TERAWAVE, LLC
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 2:
3. A method of recovering input digital data encoded into an encoded waveform of a wavelength λ wherein each period of the encoded waveform includes a first half sinusoid corresponding to one half of a first sinusoid of wavelength λ1 and a second half sinusoid corresponding to one half of a second sinusoid of wavelength λ2, where λ1+λ2=λ, the encoding including generating each period of the encoded waveform so as to represent one bit of the input digital data;
wherein the first half sinusoid is of a first polarity and the second half sinusoid of a second polarity opposite to the first polarity;
wherein a first bit value is represented when λ1 is greater than λ2 and a second bit value is represented when λ2 is greater than λ1;
the method including:
receiving an encoded analog waveform generated using the encoded waveform;
generating digital symbol samples representing the first half sinusoid and the second half sinusoid of a first period of the encoded waveform;
computing a first sum of squares of the digital symbol samples over a first integration interval encompassed by the first half sinusoid;
computing a second sum of squares of the digital symbol samples over a second integration interval encompassed by the second half sinusoid;
estimating a bit of the input digital data encoded by a first period of the encoded waveform based upon a comparison of the first sum of squares and the second sum of squares.