SINGLE AND MULTIPLE SINEWAVE MODULATION AND DEMODULATION TECHNIQUES, APPARATUS, AND COMMUNICATIONS SYSTEMS
First Claim
1. A method for transmitting data from a waveform containing encoded digital data having one of a first value and a second value at selected phase angles θ
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n comprising;
generating the waveform having an amplitude Y defined by a first function at phase angles lying outside of data regions, the first function being Y=sin θ
;
generating the waveform having an amplitude Y defined by the first function at phase angles lying inside the data regions having a range of Δ
θ
beginning at each phase angle θ
n where data of the first value is to be encoded;
generating the waveform having an amplitude Y defined by a second function at phase angles lying inside the data regions having a range of Δ
θ
associated with each phase angle θ
n where data of the second value is to be encoded, the second function being different from Y=sin θ
; and
transmitting at least one harmonic of the waveform containing encoded digital data.
1 Assignment
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Accused Products
Abstract
A method for transmitting digital data from a substantially sinusoidal waveform containing encoded digital data having one of a first and second value at selected phase angles θn comprises generating the waveform with amplitude Y defined by a first function at phase angles lying outside of data regions, the first function being Y=sin θ, generating the waveform with amplitude Y defined by the first function at phase angles lying inside the data regions having a range of Δθ beginning at each phase angle θn where data of the first value is to be encoded, generating the waveform having an amplitude Y defined by a second function different from Y=sin θ at phase angles lying inside the data regions having a range of Δθ associated with each phase angle θn where data of the second value is to be encoded, and transmitting at least one harmonic of the waveform containing encoded digital data.
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Citations
25 Claims
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1. A method for transmitting data from a waveform containing encoded digital data having one of a first value and a second value at selected phase angles θ
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n comprising;
generating the waveform having an amplitude Y defined by a first function at phase angles lying outside of data regions, the first function being Y=sin θ
;generating the waveform having an amplitude Y defined by the first function at phase angles lying inside the data regions having a range of Δ
θ
beginning at each phase angle θ
n where data of the first value is to be encoded;generating the waveform having an amplitude Y defined by a second function at phase angles lying inside the data regions having a range of Δ
θ
associated with each phase angle θ
n where data of the second value is to be encoded, the second function being different from Y=sin θ
; andtransmitting at least one harmonic of the waveform containing encoded digital data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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n comprising;
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13. Apparatus for transmitting data from at least one waveform containing encoded digital data having one of a first value and a second value at selected phase angles θ
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n comprising;
means for generating the at least one waveform having an amplitude Y defined by a first function at phase angles lying outside of data regions, and at phase angles lying inside the data regions having a range of Δ
θ
beginning at each phase angle θ
n where data of the first value is to be encoded, the first function being Y=sin θ
, and for generating the waveform having an amplitude Y defined by a second function at phase angles lying inside the data regions having a range of Δ
θ
associated with each phase angle θ
n where data of the second value is to be encoded, the second function being different from Y=sin θ
; andmeans for transmitting at least one harmonic of the at least one waveform containing encoded digital data. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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n comprising;
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25. A method for decoding a waveform containing encoded digital data comprising:
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receiving at least one harmonic of a waveform having an amplitude Y defined by a first function at phase angles lying outside of data regions, the first function being Y=sin θ
, having an amplitude Y defined by the first function at phase angles lying inside the data regions having a range of Δ
θ
beginning at each phase angle θ
n where data of the first value is to be encoded, and having an amplitude Y defined by a second function at phase angles lying inside the data regions having a range of Δ
θ
associated with each phase angle θ
n where data of the second value is to be encoded, the second function being different from Y=sin θ
; anddecoding the data from the at least one harmonic of the waveform.
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Specification