noise in system generator
显示 更早的评论
Thanks for all... how to find the type of noise present in a circuit in system generator? plz answer me..
2 个评论
Walter Roberson
2011-12-29
This sounds more like a theoretical question than a MATLAB question.
Is this question perhaps related to Simulink, or perhaps even SimPower ?
shiyamala
2012-1-8
回答（1 个）
Wayne King
2012-1-8
0 个投票
I agree with Walter that is not a MATLAB/Simulink question.
Additive WGN is a good noise model because in a wide variety of contexts (not just the one you cite) you find that the signal or image is disturbed (perturbed) by small contributions from a number of disparate (independent) sources. The sum of these contributions results in a Gaussian distribution (see the central limit theorem).
However, there are contexts in which the optimal distribution for modeling is non-Gaussian. This may be because you apply some operation to the signal, or image, which applies the same operation to the noise. This results in a transformed Gaussian RV, which can end up Rayleigh-distributed, or chi-square distributed for example.
Also, the noise may be contributed by one or two dominant sources and we may choose a different distribution to model that noise.
类别
在 帮助中心 和 File Exchange 中查找有关 Signal Generation 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
