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Analog communication........

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subbuindia

subbuindia

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Why modulation index is not appear in the DSBSC or SSBSC?
But, DSBFC is depended on modulation index? Why?
Please, explain?

Thanks......
 

Because the modulation index is the ratio between the DC value added to baseband signal and baseband minimum value. In DSBSC and SSBSC no DC value is added and no non-coherent detection is applied so the modulation index is not defined.
 

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