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how to generate statistical gaussian noise?

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Lekshmi B S

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i want to get statistical gaussian noise...i read that wgn, awgn and randn generates pseudorandom noises...so will it be better to use this equation which creates gaussian distribution..?

noise=(sqrt(1/(((2*pi)^N)*det(Q))))*(exp((-x'*inv(Q)*x)/2));

where Q is the noise covariance matrix.
 

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