Adaptive filter for channel estimation with adaptive step-size
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United States of America Patent
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Apr 23, 2013
Grant Date -
Jul 16, 2009
app pub date -
Dec 31, 2008
filing date -
Jul 3, 2006
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Abstract
A receiving apparatus for a digital mobile communication system comprises an adaptive filter for filtering an input signal. A step-size parameter chosen for the adaption of filter coefficients of the adaptive filter is computed from a variation of the filter coefficients used by the adaptive filter. This facilitates an indirect measure for the channel variation so that a good reception quality over a wide range of user velocities may be enabled in contrast to a system design based on a compromise step-size parameter being optimum for one velocity only.
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