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CARRIER TO NOISE RATIO ESTIMATIONS FROM A RECEIVED SIGNAL
CARRIER TO NOISE RATIO ESTIMATIONS FROM A RECEIVED SIGNAL
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机译:接收信号的载噪比估计
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摘要
Techniques for measuring the carrier to noise ratio (CNR) in a received digital signal are disclosed. The methods can operate on a received digital signal, such as a layered modulation signal used in a satellite television system. The CNR measurement can be made at the output of a carrier recovery loop or a timing recovery loop in a demodulator. Alternately, the CNR measurement can be made when the received signal is digitized in an analog to digital (A/D) converter at base-band by the demodulator.
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