An Implantable Pulse Generator (IPG) includes a surgically implantable housing,a batery, a first waveform generator, a second waveform generator, a modulator,and electrodes. The IPG produces a pulse envelope, a carrier waveform, and a modulatedwaveform. The pulse envelope is a low frequency waveform with specific pulsewidth, amplitude and shape to selectively stimulate a target nerve or body part.The carrier waveform is a high frequency waveform with properties such as amplitude,frequency and the like chosen so as to overcome tissue impedance and the stimulationthreshold of the target nerve. The modulated waveform is the waveform obtainedby modulating the carrier waveform by the pulse envelope.
