Equation Icon  ( ∑N ∑N ∑N ) ( ) S1 = 1- Aii + (Aij eiωijt + A ∗ e−iωijt) ⋅ ei(ωxt+φx) + e− i(ωxt+ φx) . (79 ) 2 i=0 i=0 j=i+1 ij