Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2002-09-06
2010-10-26
Payne, David C (Department: 2611)
Pulse or digital communications
Receivers
Interference or noise reduction
C375S227000, C375S213000, C398S026000, C455S067130, C455S135000, C455S226300, C455S277200, C702S069000
Reexamination Certificate
active
07822154
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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Chen Ernest C.
Tran Chinh
Dsouza Adolf
Payne David C
The DIRECTV Group Inc.
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