Quadrature Modulated (QM) Waveform, Ideal
In a quadrature modulates (QM) system, the QM ideal waveform is the sum of the I and Q component of a signal as follows:
To obtain the QM waveform, the baseband components are modulated orthogonally as
thus
where i(t) and q(t) are the baseband I and Q waveforms, respectively.