Baseband signals The simplest signaling scheme is pulse amplitude modulation(PAM) With binary pam a pulse of amplitude a is used to represent a"1" and a pulse with amplitude-a to represent a0 The simplest pulse is a rectangular pulse, but in practice other type of pulses are used For our discussion we will generally assume a rectangular pulse If we let g(t be the basic pulse shape than with pam we transmit gt) to represent a“1and-g(t) to represent a“0” 1→>S(t)=g(t) A 0=>S(t)=-g(t)Baseband signals • The simplest signaling scheme is pulse amplitude modulation (PAM) – With binary PAM a pulse of amplitude A is used to represent a “1” and a pulse with amplitude -A to represent a “0” • The simplest pulse is a rectangular pulse, but in practice other type of pulses are used – For our discussion we will generally assume a rectangular pulse • If we let g(t) be the basic pulse shape, than with PAM we transmit g(t) to represent a “1” and -g(t) to represent a “0” g(t) 1 => S(t) = g(t) A 0 => S(t) = -g(t) Tb Eytan Modiano Slide 3