Demodulation How do we recover the baseband signal? Um(t=Sm(tCos(2nft Amt Cos(2nft) PF 2 Cos(2ft) U(t)2 Cos(2ft=2S(t)Cos (2nf t)=S(t)+ s(t)Cos(4ft The high frequency component is rejected by the lpf and we are left with s(t)Demodulation • How do we recover the baseband signal? Um(t)= Sm(t)Cos(2πfct) = Amg(t) Cos(2πfct) U(t) LPF Sr(t) 2Cos(2πfct) U(t)2Cos(2πfct)= 2S(t)Cos2(2πfct) = S(t) + S(t)Cos(4πfct) The high frequency component is rejected by the LPF and we are left with S(t). Eytan Modiano Slide 11