Wireless communication systems and methods with source localization and self-calibration
OwnerAhmed Zoubirinventor
Life of this patent
Estimating the term…
Abstract
Computer-implemented systems and methods are provided for source-localization and self-calibration for an array of antenna elements. In one implementation, a method is provided that includes estimating directions of arrival of a plurality of signals received by a plurality of antenna elements of the array of antenna elements and identifying a target signal from among the plurality of received signals. The method may also include estimating complex gain of each of the plurality of antenna elements in a direction of arrival of the identified target signal, wherein the estimation of the complex gain of each the plurality of antenna elements is performed after estimating the directions of arrival of signals received by the plurality of antenna elements.
Claims34
A computer-implemented method for source-localization and self-calibration for an array of antenna elements, comprising:
- estimating, using a processor, directions of arrival of a plurality of signals received by a plurality of antenna elements of the array of antenna elements and identifying a target signal from among the plurality of received signals;
- and
- estimating, using a processor, a complex gain of each of the plurality of antenna elements in a direction of arrival of the identified target signal, wherein the estimation of the complex gain of each of the plurality of antenna elements is performed after estimating the directions of arrival of signals received by the plurality of antenna elements.
A wireless communication system, comprising:
- an antenna comprising an array of antenna elements;
- a signal processing system electrically coupled to each of the plurality of array elements, the signal processing system comprising:
- an array processor configured to:
- estimate directions of arrival of a plurality of signals received by a plurality of antenna elements of the array of antenna elements;
- identify a target signal from among the plurality of received signals;
- estimate a location of a target source associated with the target signal;
- and
- estimate a complex gain of each of the plurality of antenna elements in a direction of the location of the target source, wherein the estimation of the complex gain of each of the plurality of antenna elements is performed after estimating the location of the target source.
A non-transitory computer-readable medium for use on a computer system, the computer-readable medium including computer-executable instructions which, when executed by a processor, perform a method for source-localization and self-calibration for an array of antenna elements, the method comprising:
- estimating, using a processor, directions of arrival of a plurality of signals received by a plurality of antenna elements of the array of antenna elements and identifying a target signal from among the plurality of received signals;
- and
- estimating, using a processor, a complex gain of each of the plurality of antenna elements in a direction of arrival of the identified target signal, wherein the estimation of the complex gain of each of the plurality of antenna elements is performed after estimating the directions of arrival of signals received by the plurality of antenna elements.
A method for determining a location of a target source and estimating complex gains for an array of antenna elements based on the location of the target source, the method comprising:
- executing instructions on at least one processor to:
- select a sample number of antenna elements to be analyzed;
- determine an initial estimate of a location of a target source;
- estimate directions of arrival of a first plurality of signals received by the selected antenna elements;
- identify a target signal from among the first plurality of received signals;
- estimate direction of arrival and complex gain parameters associated with each of the selected antenna elements based on the target signal identified from among the first plurality of received signals;
- estimate directions of arrival of a second plurality of signals received by the selected antenna elements;
- identify the target signal from among the second plurality of received signals;
- re-estimate direction of arrival and complex gain parameters associated with each of the selected antenna elements based on the target signal identified from among the second plurality of received signals;
- determine whether the estimated direction of arrival and complex gain parameters and the re-estimated direction of arrival and complex gain parameters converge to threshold values;
- and
- establish, for each antenna element of the array of antenna elements, direction of arrival and complex gain parameters as the estimated direction of arrival and complex gain parameters for the selected antenna elements if the estimated and re-estimated parameters converge to threshold values.
Dependencies are inferred from the claim text.