Examples of 'noise variance' in a sentence
Meaning of "noise variance"
noise variance - the variability or difference in the levels of noise present in a system or environment
How to use "noise variance" in a sentence
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noise variance
Noise variance estimator for speech enhancement.
These detectors are robust against noise variance uncertainty.
Noise variance estimation for speech enhancement.
We also propose an estimate for the noise variance.
Noise variance can be determined.
The mean of the effective noise variance is the same as before.
Many noise variance estimation strategies have been previously proposed to solve this problem.
The channel coefficients and the noise variance are assumed to be known by the receiver.
The mean of the estimate will not be the same as the effective noise variance.
The noise variance.
An AWGN channel is modelled by a transmission coefficient and a noise variance.
The operation of the noise variance estimator example of FIG.
The fourth order cumulant and σ b 2 the noise variance.
Determining noise variance of the incoming signals ;.
Furthermore, detection of pilot symbols allows to obtain an estimate of the noise variance σ 2.
See also
Clearly, an accurate noise variance estimation is crucial to the performance of the system.
The detection of pilot symbols also produces estimation of the noise variance σ -2.
In these situations, the noise variance estimation can become inaccurate, thereby producing a very biased result.
The spread of the data gives a real-time measurement of the noise variance.
Thus, the mean of the effective noise variance may be represented as follows, EPMATHMARKEREP.
Each squared Euclidian distance is divided by the noise variance σ2.
In this case, the effective noise variance can be estimated as follows, EPMATHMARKEREP with EPMATHMARKEREP.
The Euclidian squared distance between each point is divided by the noise variance σ2.
To implement energy detector, however, noise variance information is required.
Figure 5A is a simplified block diagram of a multiuser detection receiver using a scaled noise variance.
FIG . 3 is a flow diagram of a method for estimating noise variance in accordance with an embodiment.
A noise variance estimator 504 may be used to perform this computation.
Without loss of generality, we have assumed the noise variance is 1.
The noise variance a is scaled by a scaling device, such as by a factor of 1/P.
However, it will be larger than the in-band noise variance estimate.
The noise variance is only updated during the time when it is not ( reference [ 2 ] ).
A channel estimation device 58 estimates the channel response matrix H and the noise variance σ2.
Similarly, the noise variance is calculated by, EQU2.
Unit 107 produces a measurement of the noise variance σk.
A test using the noise variance calculated by the NVR tester 373 ( to reject noisy conditions ) ;.
Moreover, 2 ( ^ ) σ2nr represents the estimated value of the noise variance in the nrth receiver antenna.
The module 101 also includes a second block 502 for calculating the noise variance after equalization.
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