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There are 6 10 small picture elements in a video each having 8 distinguishable 4 equiprobable levels of illumination. The rate of transmission of picture

There are 6 10 small picture elements in a video each having 8 distinguishable 4 equiprobable levels of illumination. The rate of transmission of picture frames is 20 /s. If the BW of the video signal required is 0.3 MHz, find out the S/N ratio for satisfactory reproduction of the picture.

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