amplitude modulation wave-type

Discussion in 'General Electronics Chat' started by jayanthyk192, Nov 30, 2011.

  1. jayanthyk192

    Thread Starter Member

    Jan 23, 2010

    In amplitude modulation,the signal m(t) is modulated over the carrier to get packets .but insted why dont we simple do s(t)=Ac*cos(wt)+m(t) to get the a wave that is periodically clamped with respect to m(t),all we need a high freq. carrier and this does the job.please tell me why is not used and why a packet wave is chosen.

    Thank you.