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US 7,340,001 B2Granted
Multidimensional signal modulation and/or demodulation for data communications
AssigneeUT-Battelle, LLC
InventorsStephen F. Smith, William B. Dress
Life of this patent
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Abstract
Systems and methods are described for multidimensional signal modulation and/or demodulation for data communications. A method includes modulating a carrier signal in a first domain selected from the group consisting of phase, frequency, amplitude, polarization and spread; modulating the carrier signal in a second domain selected from the group consisting of phase, frequency, amplitude, polarization and spread; and modulating the carrier signal in a third domain selected from the group consisting of phase, frequency, amplitude, polarization and spread.
Claims34
A method, comprising;
- modulating a signal in a first domain selected from the group consisting of phase, frequency, amplitude, polarization, and spread;
- modulating the signal in a second domain selected from the group consisting of phase, frequency, amplitude, polarization, and spread;
- modulating the signal in a third domain selected from the group consisting of phase, frequency, amplitude, polarization, and spread;
- and
- transmitting the modulated signal,
- wherein modulating the signal in the first domain, modulating the signal in the second domain and modulating the signal in the third domain defines a three dimensional orthogonal symbol constellation selected from the group consisting of face-centered cubic spheres and hexagonal close-packed spheres, each sphere having 12 nearest neighbors, and
- wherein the three dimensional orthogonal symbol constellation includes an origin at {0,0,0} containing a center sphere characterized by zero power transmitted.
4 more elements
A method, comprising:
- modulating a signal in a first domain selected from the group consisting of phase, frequency, amplitude, polarization, and spread;
- modulating the signal in a second domain selected from the group consisting of phase, frequency, amplitude, polarization, and spread;
- modulating the signal in a third domain selected from the group consisting of phase, frequency, amplitude, polarization, and spread;
- modulating the signal in a fourth domain selected from the group consisting of phase, frequency, amplitude, polarization, and spread;
- and
- transmitting the modulated signal,
- wherein modulating the signal in the first domain, modulating the signal in the second domain, modulating the signal in the third domain, and modulating the signal in the fourth domain defines a four-dimensional orthogonal symbol constellation of face-centered cubic hyperspheres, each hypersphere having 24 nearest neighbors, and
- wherein the four-dimensional orthogonal symbol constellation includes an origin containing a center sphere characterized by zero power transmitted.
5 more elements
A method, comprising:
- modulating a signal in a first domain selected from the group consisting of phase, frequency, amplitude, polarization, and spread;
- modulating the signal in a second domain selected from the group consisting of phase, frequency, amplitude, polarization, and spread;
- modulating the signal in a third domain selected from the group consisting of phase, frequency, amplitude, polarization, and spread;
- modulating the signal in a fourth domain selected from the group consisting of phase, frequency, amplitude, polarization, and spread;
- modulating the signal in a fifth domain selected from the group consisting of phase, frequency, amplitude, polarization and spread;
- and
- transmitting the modulated signal,
- wherein modulating the signal in the first domain, modulating the signal in the second domain, modulating the signal in the third domain, modulating the signal in the fourth domain and modulating the signal in the fifth domain defines a five-dimensional orthogonal symbol constellation of hyperspheres, each hypersphere having 48 nearest neighbors, and
- wherein the five-dimensional orthogonal symbol constellation includes an origin containing a center sphere characterized by zero power transmitted.
6 more elements
A method, comprising;
- receiving a signal;
- demodulating the signal in a first domain selected from the group consisting of phase, frequency, amplitude, polarization and spread;
- demodulating the signal in a second domain selected from the group consisting of phase, frequency, amplitude, polarization and spread;
- and
- demodulating the signal in a third domain selected from the group consisting of phase, frequency, amplitude, polarization and spread,
- wherein demodulating the signal in the first domain, demodulating the signal in the second domain and demodulating the signal in the third domain decodes a three dimensional orthogonal symbol constellation selected from the group consisting of face-centered cubic spheres and hexagonal close-packed spheres, each sphere having 12 nearest neighbors, and
- wherein the three dimensional orthogonal symbol constellation includes an origin at {0,0,0} containing a center sphere used for counting purposes but not for energy determination.
4 more elements
A method, comprising:
- receiving a signal;
- demodulating the signal in a first domain selected from the group consisting of phase, frequency, amplitude, polarization and spread;
- demodulating the signal in a second domain selected from the group consisting of phase, frequency, amplitude, polarization and spread;
- demodulating the signal in a third domain selected from the group consisting of phase, frequency, amplitude, polarization and spread;
- and
- demodulating the signal in a fourth domain selected from the group consisting of phase, frequency, amplitude, polarization and spread,
- wherein demodulating the signal in the first domain, demodulating the signal in the second domain, demodulating the signal in the third domain and demodulating the signal in the fourth domain decodes a four-dimensional orthogonal symbol constellation of face-centered cubic hyperspheres, each hypersphere having 24 nearest neighbors, and
- wherein the four-dimensional orthogonal symbol constellation includes an origin containing a center sphere used for counting purposes but not for energy determination.
5 more elements
A method, comprising:
- receiving a signal;
- demodulating the signal in a first domain selected from the group consisting of phase, frequency, amplitude, polarization and spread;
- demodulating the signal in a second domain selected from the group consisting of phase, frequency, amplitude, polarization and spread;
- demodulating the signal in a third domain selected from the group consisting of phase, frequency, amplitude, polarization and spread;
- demodulating the signal in a fourth domain selected from the group consisting of phase, frequency, amplitude, polarization and spread;
- and
- demodulating the signal in a fifth domain selected from the group consisting of phase, frequency, amplitude, polarization and spread,
- wherein demodulating the signal in the first domain, demodulating the signal in the second domain, demodulating the signal in the third domain, demodulating the signal in the fourth domain and demodulating the signal in the fifth domain decodes a five-dimensional orthogonal symbol constellation of hyperspheres, each hypersphere having 48 nearest neighbors, and
- wherein the five-dimensional orthogonal symbol constellation includes an origin containing a center sphere used for counting purposes but not for energy determination.
6 more elements
Dependencies are inferred from the claim text.