Signal, interference and noise power measurement
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United States of America Patent
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Oct 26, 2010
Grant Date -
Nov 27, 2003
app pub date -
Sep 6, 2002
filing date -
Apr 27, 2001
priority date (Note) -
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Abstract
Systems and methods are presented for measuring power levels of primary and interfering signals as well as noise, particularly for satellite transmitted signals. A typical method comprises the steps of receiving a signal comprising a primary signal, an interference signal and noise, demodulating the primary signal to remove a carrier frequency, decoding the primary signal to obtain symbols, estimating a power level of the primary signal based upon the demodulated and decoded primary signal. Additionally, an ideal primary signal can be generated from the carrier power and frequency and the symbols and subtracted from the received signal to produce the noise and interference signal. The noise and interference power is then estimated from the noise and interference signal.
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