Communication using chaotic waveforms
AssigneeAshrem Technologies, Inc.
InventorAshitosh Swarup
Life of this patent
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Abstract
Example communication systems and methods are described. In one implementation, a method receives a first chaotic sequence of a first temporal length, and a second chaotic sequence of a second temporal length. The method also receives a data symbol for communication to a destination. Based on the data symbol, the second chaotic sequence is temporally shifted and combined with the first chaotic sequence to generate a composite chaotic sequence. The first chaotic sequence functions as a reference chaotic sequence while the second chaotic sequence functions as a data-carrying auxiliary chaotic sequence.
Claims16
A method comprising:
- receiving a first chaotic sequence of a first temporal length;
- receiving a second chaotic sequence of a second temporal length;
- temporally shifting the second chaotic sequence relative to the first chaotic sequence to obtain a temporally shifted second chaotic sequence, wherein temporally shifting the second chaotic sequence generates residual samples beyond the second temporal length, and wherein the residual samples of the temporally-shifted second chaotic sequence are wrapped around the starting point of the second chaotic sequence;
- and
- combining, using one or more processors, the first chaotic sequence and the second chaotic sequence to generate a composite chaotic sequence such that the first chaotic sequence serves as a reference chaotic sequence and the second chaotic sequence serves as an auxiliary chaotic sequence.
A method comprising:
- receiving a composite chaotic sequence that includes a combination of a first chaotic sequence and a second chaotic sequence, wherein the first chaotic sequence is a reference chaotic sequence of a first temporal length, wherein the second chaotic sequence is of a second temporal length, wherein an original chaotic sequence is temporally shifted with respect to the first chaotic sequence to obtain the second chaotic sequence, wherein the original chaotic sequence is temporally shifted in a manner that generates residual samples beyond the second temporal length, and wherein the residual samples of the original chaotic sequence are wrapped around the starting point of the second chaotic sequence in the second chaotic sequence;
- demodulating, using one or more processors, the composite chaotic sequence to extract the reference chaotic sequence;
- demodulating, using the one or more processors, the composite chaotic sequence to extract the second chaotic sequence;
- and
- determining the temporal shift of the second chaotic sequence with respect to the reference chaotic sequence.
An apparatus comprising:
- a discrete-time waveform generator configured to generate a discrete-time waveform, wherein the discrete-time waveform generator is also configured to modulate the phase or the frequency of the discrete-time waveform with an external signal;
- and
- a discrete-time signal generator distinct from the discrete-time waveform generator, wherein an output of the discrete-time digital signal generator functions as the external signal, wherein the discrete-time signal generator is a binary counter, and wherein the modulated discrete-time waveform is a chaotic waveform.
Dependencies are inferred from the claim text.