Distortionless vestigial-sideband transmission with symmetric delay about the carrier frequency and synchronous demodulation

The general amplitude condition is (MU ¿ ML)2 + MU ML/MO2 = 1. where MU and ML are upper and lower sideband amplitudes and MO ¿ ¿ is arbitrary. The demodulating carrier phase ¿ is determined from MO cos (¿+¿) = ¿, where ¿O is the phase shift at the carrier. The delay condition is ¿U = ¿L¿ = T±(MU ML¿ + MU¿ ML) MO¿1|sin (¿+¿O)|, where ¿U¿ and ¿L¿ are upper and lower sideband delays and T is an arbitrary constant. The value MO = ¿ gives the well known `constant-sideband-sum¿ condition and MO = 1/¿2 the recently discovered `constant-sideband-squared-sum¿ condition.