Carrier to noise ratio estimations from a received signal

Details Carrier to noise ratio estimations from a received signal Carrier to noise ratio estimations from a received signal

2004-08-05

2009-12-29

Bayard, Emmanuel (Department: 2611)

Pulse or digital communications

Receivers

Angle modulation

C375S316000

Reexamination Certificate

active

07639759

ABSTRACT:
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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