A cell phone transmits voice signals on a carrier.The transmissions lie in the Range 900MHZ to 900.03 MHZ.what sampling rate should be choosen to ensure that the transmissions will be recoverable from the digital samples?A radar signal is ranging in from 900 Mhz to 900.5 MHZ is undersampled at 2MHZ .if a 200 MHZ target appears in the B aseband, what is the actual frequency of the target.Draw x[n]= 2u[n]Draw x[n]=u[2-n]