Kalman filter based equalization for digital multicarrier communications systems
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United States of America Patent
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Sep 25, 2001
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app pub date -
Mar 1, 2000
filing date -
Mar 8, 1999
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Abstract
A computer-implemented approach for reducing distortion in digital communications systems generally involves obtaining an optimal estimation of the original data using a Kalman filter with an increased length state to remove substantially all ISI in the time domain. The use of an increased length state in the Kalman filter provides a more accurate estimate of the transmitted data with relatively little additional computational cost. Subsequent equalization may also be performed in the frequency domain to correct any residual amplitude and phase distortion.
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