k k k Sa t t T p q f = + ( ) cos cos( ) cos cos sin( )sin 2 2 MSK k c k k c S S t t s t w t a w t T T p p f J = - ( ) cos( ) cos ( ) cos sin( )sin 2 2 k c k k c S S t t I t w t Q t w t T T p p J = - ( ) cos cos cos( ) cos 2 I k k c St x t w t T p f J = ( ) cos sin( ) cos 2 Q k k c St x t a w t T pf=)2 ( ST t?)2 ( ST t?