CHANNEL TRACKING METHODS FOR SUBSPACE EQUALIZERS
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United States of America Patent
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Issued Date -
May 14, 2009
app pub date -
Nov 12, 2007
filing date -
Nov 12, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A receiver includes a subspace filter having first and second basis filters, with the first basis filter module generating a weighted average channel estimate. The receiver collects a plurality of channel estimates over an interval and combines the plurality of channel estimates using a weighting factor and summing to generate the weighted average channel estimate. The receiver generates a weighting factor for each of the plurality of channel estimates over the interval the weighting factors vary as a function of the relative velocity of the receiver so that the estimates closest in time to the current estimate are weighted more heavily than estimates further spaced in time from the current estimate.
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