F() ()=∑6(o-m F(0)=F(O)6(o) IFT IFT f()=∑f(-n) IFT n=-00 ∑(-=n f(t) f()=1)+51)、00=010 F() ( ) ( )  1  =− = −        n n ( ) ( ) ( ) F1  = F     f (t) IFT ( ) 1 ( ) 1 1   =− = − n p  t nT   IFT ( ) 1 ( ) ( )* 1 1 f t f t t T   =   =− = − n f t f (t nT ) 1 ( ) 1 1 1  IFT