Blind dual error antenna diversity (DEAD) algorithm for beamforming antenna systems
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United States of America Patent
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Sep 27, 2005
Grant Date -
Feb 13, 2003
app pub date -
Jun 8, 2001
filing date -
Jan 16, 2001
priority date (Note) -
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Abstract
An adaptive antenna system includes N antennae, N forward equalizers operatively coupled to a respective one of the N antennae, and N processors performing a constant modulus algorithm (CMA) to thereby generate N respective control signals which adapt coefficients associated with each respective one of the forward equalizer. Preferably, the adaptive antenna system also includes a sampling device receiving a signal based on the collected output of the N forward equalizers, and a feedback equalizer receiving an output of the sampling device and generating a feedback signal biasing the signal received by the sampling device. If desired, the N control signals are applied to the N respective forward equalizers during a first operating mode, and a selected one of the N control signals is applied to the N forward equalizers during second mode of operation. A method of operating a beamforming antenna system is also described.
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