independent sideband (modulation) (ISB)

Independent Sideband Modulation (ISB) is a two sideband mod ulation(ZSB) in which each individual sideband is modulated with a different signal.

This modulation type is available with full and with suppressed carrier signal. ISB modulation is implemented using filter techniques by mixing the two signals in two mixers with the same carrier frequency and then combining each as a single sideband.

The advantage lies in the better use of the available frequency band.