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US 2016/0344579 A1Published application
Constant-envelope phase-optimized transmission methods and apparatus
AssigneeThe Boeing Company
InventorsIsaac M. Jeng, Brandon M. Jones
Life of this patent
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Abstract
Constant-envelope phase-optimized transmission methods and apparatus are disclosed. An example method includes determining initial values of modulation phases in a first quadrant, the modulation phases associated with binary codes to be transmitted; and optimizing the initial values to second values to enable a product of an objective function to be within a threshold value.
Claims23
A method, comprising:
- determining initial values of modulation phases in a first quadrant using an initializer, the initial values of the modulation phases representing approximately one quarter of a total of the modulation phases in the first quadrant, a second quadrant, a third quadrant, and a fourth quadrant, when determining the initial values of the modulation phases in the first quadrant, values of modulation phases in the second quadrant, the third quadrant, and the fourth quadrant are not being initially determined, the modulation phases associated with binary codes to be transmitted;
- and
- optimizing the initial values to second values of the modulation phases to enable a product of an objective function to be within a threshold value using an optimizer, at least one of the initializer or the optimizer being implemented by a logic circuit.
An apparatus, comprising:
- a database to store initial values of modulation phases in a first quadrant, the modulation phases associated with binary codes to be transmitted, the initial values of the modulation phases representing approximately one quarter of a total of the modulation phases in the first quadrant, a second quadrant, a third quadrant, and a fourth quadrant, the initial values of the modulation phases in the first quadrant not including values of modulation phases in the second quadrant, the third quadrant, and the fourth quadrant;
- and
- a processor including an optimizer implemented with a logic circuit, the optimizer is to:
- based on the initial values obtained from the database, optimize the initial values to second values of the modulation phases to enable a product of an objective function to be within a threshold value.
1 more element
A tangible machine-readable storage medium comprising instructions which, when executed, cause a machine to at least:
- determine initial values of modulation phases in a first quadrant, the modulation phases associated with binary codes to be transmitted, the initial values of the modulation phases representing approximately one quarter of a total of the modulation phases in the first quadrant, a second quadrant, a third quadrant, and a fourth quadrant, when determining the initial values of the modulation phases in the first quadrant, values of modulation phases in the second quadrant, the third quadrant, and the fourth quadrant are not being initially determined;
- and
- optimize the initial values to second values of the modulation phases to enable a product of an objective function to be within a threshold value.
Dependencies are inferred from the claim text.