Bit-loading in multicarrier communication systems in the presence of an asymmetric, correlated gaussian noise sources
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United States of America Patent
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Sep 2, 2008
Grant Date -
Sep 1, 2005
app pub date -
Feb 26, 2004
filing date -
Feb 26, 2004
priority date (Note) -
Expired
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Abstract
In general, various methods and apparatus are described that use a multi-tone receiver. The multi-tone receiver detects data in a multiple tone signal. The receiver has a detector module to measure a noise power level present in the system and to detect for an asymmetric Gaussian noise source in the background noise. An equivalent noise power is obtained by applying a compensating gain factor to the asymmetrical noise source. The gain factor is used when the detector indicates that the asymmetric Gaussian noise source exists in the background noise. Any bit-loading algorithm that is based on a symmetric Guassian noise source assumption can also be used with asymmetrical Guassian noise sources if this gain factor is applied.
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