Method and apparatus for performing directional re-scan of an adaptive antenna
First Claim
1. A method for operating an antenna in a wireless communications system, the antenna comprising a plurality of antenna elements for generating a plurality of antenna patterns, the method comprising:
- adjusting weights for the plurality of antenna elements to establish a current antenna pattern;
detecting a signal received at each of the plurality of antenna elements in the current antenna pattern;
combining the signal received at each of the plurality of antenna elements to produce a combined received signal;
determining a signal quality metric for the combined received signal;
adjusting the weights for the plurality of antenna elements to establish at least one candidate antenna pattern;
repeating the detecting, the combining and the determining each one candidate antenna pattern;
comparing the signal quality metric associated with the current antenna pattern to the signal quality metric associated with the at least one candidate antenna pattern for determining a preferred signal quality metric; and
adjusting the weights for the plurality of antenna elements associated with the preferred signal quality metric to establish a preferred antenna pattern.
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Abstract
An antenna for use with a receiver in a wireless communications system includes antenna elements for generating antenna patterns, and a first module for applying weights to a signal received at each of the antenna elements to generate a selected one of the antenna patterns. A second module detects the received signal at each of the antenna elements. A combiner combines the received signal detected at each of the antenna elements to produce a combined received signal for a selected antenna pattern. A third module determines a signal quality metric for the combined received signal at each selected antenna pattern. The first module is responsive to the determined signal quality metrics for adjusting the weights to generate a preferred antenna pattern.
23 Citations
23 Claims
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1. A method for operating an antenna in a wireless communications system, the antenna comprising a plurality of antenna elements for generating a plurality of antenna patterns, the method comprising:
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adjusting weights for the plurality of antenna elements to establish a current antenna pattern; detecting a signal received at each of the plurality of antenna elements in the current antenna pattern; combining the signal received at each of the plurality of antenna elements to produce a combined received signal; determining a signal quality metric for the combined received signal; adjusting the weights for the plurality of antenna elements to establish at least one candidate antenna pattern; repeating the detecting, the combining and the determining each one candidate antenna pattern; comparing the signal quality metric associated with the current antenna pattern to the signal quality metric associated with the at least one candidate antenna pattern for determining a preferred signal quality metric; and adjusting the weights for the plurality of antenna elements associated with the preferred signal quality metric to establish a preferred antenna pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An antenna for use with a receiver in a wireless communications system, the antenna comprising:
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a plurality of antenna elements for generating a plurality of antenna patterns; a first module for applying weights to a signal received at each of said plurality of antenna elements to generate a selected one of the antenna patterns; a second module for detecting a received signal at each of said plurality of antenna elements; a combiner for combining the received signal detected at each of said plurality of antenna elements to produce a combined received signal for the selected antenna pattern; and a third module for determining a signal quality metric for the combined received signal at each selected antenna pattern; said first module being responsive to the determined signal quality metrics for adjusting the weights to generate a preferred antenna pattern. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification