Communication using chaotic waveforms
AssigneeAshrem Technologies, Inc.
InventorAshitosh Swarup
Life of this patent
Estimating the term…
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.
Claims18
A method comprising:
- generating, by a processing system, a phase angle and a trigonometric multiplier, wherein the phase angle and the trigonometric multiplier are associated with a chaotic sequence;
- generating, by the processing system using the phase angle and a trigonometric function, a sample of the chaotic sequence;
- and
- updating, by the processing system, using the trigonometric multiplier, the phase angle, to generate an updated phase angle.
An apparatus comprising:
- a direct digital synthesizer configured to generate a discrete-time sinusoidal signal, wherein the direct digital synthesizer is configured to receive one or more inputs that are used to program a phase and a frequency of the sinusoidal signal;
- and
- a discrete-time chaos waveform generator that is configured to generate a discrete-time chaotic signal, wherein the discrete-time chaos waveform generator is a binary counter, wherein the discrete-time chaotic signal is input to the direct digital synthesizer, and wherein the discrete-time chaotic signal is used to program the phase or the frequency of the sinusoidal signal.
A method comprising:
- generating a first chaotic sequence at a first power level;
- modulating the first chaotic sequence with communication information;
- generating a second chaotic sequence at a second power level, wherein the second power level is greater than the first power level;
- combining the modulated first chaotic sequence and the second chaotic sequence to generate a composite chaotic sequence;
- and
- transmitting the composite chaotic sequence to a destination.
Dependencies are inferred from the claim text.