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AssigneeAlcatel
InventorsKang Lu, Rolf Matzner, Witthaya Panyaworayan
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The invention concerns a procedure for determining the signal-to-noise ratio (ρ) of a signal (y) with wanted signal components (x) and noise signal components (n), it being assumed that the noise signal components (n) have a Gaussian distribution. In order that the signal-to-noise ratio of the signal (y) can be calculated in an accurate and reliable manner, including, in particular, when there are only relatively few measurement values (S) per measurement interval or when there is only a relatively poor signal (y) with a high noise signal component (n), it is proposed that the signal (y) be manipulated, before the signal-to-noise ratio (ρ) is determined, in such a way that the noise signal components (n) have a greater probability of having a Gaussian distribution. It is proposed, according to a development, that a noise signal (n′) with a known power be added to the signal (y). The noise signal (n′) preferably has a Gaussian distribution.
Method for determining the signal-to-noise ratio (ρ) of a signal (y) with wanted signal components (x) and noise signal components (n), it being assumed that the noise signal components (n) have a Gaussian distribution, characterized in that the signal (y) is manipulated, before the signal-to-noise ratio (ρ) is determined, in such a way that the noise signal components (n) have a greater probability of having a Gaussian distribution.
Control element, in particular, a read-only memory or flash memory, for a controller of a device for determining the signal-to-noise ratio (ρ) of a signal (y), on which there is stored a program which is capable of being executed on a computing device, in particular, on a microprocessor, and is suitable for the execution of a method according to any one of the preceding claims.
Device for determining the signal-to-noise ratio (ρ) of a signal (y) with wanted signal components (x) and noise signal components (n), it being assumed that the noise signal components (n) have a Gaussian distribution, characterized in that the device comprises means for manipulating the signal (y) prior to the determination of the signal to-noise ratio (ρ), the means for manipulation manipulating the signal (y) in such a way that the noise signal components (n) have a greater probability of having a Gaussian distribution.
Receiver of a communications transmission path with a device for determining the signal-to-noise ratio (ρ) of a received signal (y) with wanted signal components (x) and noise signal components (n), it being assumed that the noise signal components (n) have a Gaussian distribution, characterized in that the device comprises means for manipulating the signal (y) prior to the determination of the signal-to-noise ratio (ρ), the means for manipulation manipulating the signal (y) in such a way that the noise signal components (n) have a greater probability of having a Gaussian distribution.
Dependencies are inferred from the claim text.