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How to write a Matlab program to generate White Gaussian Noise (WGN)?

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thered

thered

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Hi,

i've read that white gaussian noise has zero mean and a variance of 1. at the same time, the power spectral density has to be uniform all throughout in frequency.

i am confused as to how to program to generate this noise and i need some clarification to fully understand this.

thanks for the help in advance.
 

Re: White Gaussian Noise

Try reading
Communication systems 3e by Simon Haykins
 

    thered

    thered

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Re: White Gaussian Noise

Sklar 2ed explains it too
 

    thered

    thered

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Re: White Gaussian Noise

it would be very simple if you use matlab
in the simulink toolbox you can add this noise directly to your system
 

    thered

    thered

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Re: White Gaussian Noise

study the B.P Lathi book
 

    thered

    thered

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Re: White Gaussian Noise

randn(100,1) makes a vector with mean 0 and variance 1. the white requirement is satisfied automatically but if we filter this vector it will be colored.
 

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    thered

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