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Multi-finger beamforming and array pattern synthesis

  • US 10,334,454 B2
  • Filed: 05/11/2017
  • Issued: 06/25/2019
  • Est. Priority Date: 05/11/2017
  • Status: Active Grant
First Claim
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1. A communication device comprising:

  • an antenna array; and

    a beamforming controller configured to;

    determine a set of beamforming weights for the antenna array based on a target radiation pattern having target main finger power levels for a plurality of main fingers and a target maximum sidelobe power level, wherein the beamforming controller is configured to determine the set of beamforming weights by, in each of a plurality of iterations;

    identifying a search space of beamforming weights for a plurality of antenna elements of the antenna array, andupdating, based on estimated main finger power levels and estimated sidelobe power levels of the set of beamforming weights, the set of beamforming weights within the search space to reduce a difference between the estimated main finger power levels and the target main finger power levels and to reduce the estimated sidelobe power levels toward or below the target maximum sidelobe power level,and wherein the beamforming controller is further configured to;

    update, based on the estimated main finger power levels and estimated sidelobe power levels, the target main finger power levels or the target maximum sidelobe power level to obtain an updated target main finger power level or an updated target maximum sidelobe power level; and

    iteratively re-update the set of beamforming weights based on the updated target main finger power level or the updated target maximum sidelobe power level;

    the antenna array configured to transmit or receive radio signals based on the set of beamforming weights.

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