MSK信号波形(续3) ●对该式展开 Ss()=∑ t ang(t-nr )·cos=·cost ∑bg(t-m7) sin-. sin t ∑ang()cost-∑bng()smt g1() cOS T127/2MSK 信号波形(续3) ⚫ 对该式展开 a t t b t t t T t b g t nT t T T t S t a g t nT c n c n Q n n I c n s n s c n s s MSK n s = − − − = − + g ( ) cos g ( )sin ( ) sin sin ) cos cos 2 ( ) ( g (t) I Ts t cos t −Ts / 2 / 2 Ts g (t) Q Ts t sin t 0 Ts