System and method for selecting data rates to provide uniform bit loading of subcarriers of a multicarrier communication channel
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United States of America Patent
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Feb 19, 2008
Grant Date -
Jul 14, 2005
app pub date -
Mar 30, 2004
filing date -
Jan 12, 2004
priority date (Note) -
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Abstract
A data rate is selected for subcarriers of each frequency and spatial channel of a slowly varying frequency selective multicarrier channel to provide uniform bit loading (UBL) for faster link adaptation. Signal to noise ratios (SNRs) for subcarriers of the multicarrier communication channel may be calculated from channel state information and a transmit power level. A throughput may be estimated for the data rates from the SNRs and one of the data rates may be selected based on the estimated throughputs.
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