The conventional DSB-FC AM signal is given by:
\$ s(t)=[A+x(t)]\cos \omega _C t \$
In conventional DSB-FC AM we take care of the fact that \$ |x(t) | <A\$. So that the modulated signal is not distorted when \$ x(t) <0 \$.
However, the DSB-Suppressed Carrier (DSB-SC) is given by:
\$g(t)= x(t) A\cos \omega _C t \$
So, in a DSB-SC system, whenever \$ x(t) <0 \$ (at zero crossings), the modulated signal gets distorted and the modulated signal does not retain the original shape of the message signal \$ x(t) \$. So, is this a disadvantage of DSB-SC system? If so, then this is a major drawback of DSB-SC system. Then how do DSB-SC systems deal with modulating signals where \$ x(t)<0 \$
Signal distortion at zero Crossings(The original shape of the signal is not retained).