Automatic power control system for a code division multiple access (CDMA) communications system
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United States of America Patent
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Mar 10, 2009
Grant Date -
Aug 29, 2002
app pub date -
Feb 27, 2002
filing date -
Jun 30, 1995
priority date (Note) -
In Force
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Abstract
A receiver receives signals and noise over a frequency spectrum of a desired received signal. The desired received signal is spread using code division multiple access. The received signals and noise are demodulated to produce a demodulated signal. The demodulated signal is despread using a code uncorrelated with a code associated with the desired received signal. A power level of the despread demodulated signal is measured as an estimate of the noise level of the frequency spectrum.
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