The DTV precorrector is divided into a group delay precorrector and a linearity precorrector: Precorrection is performed at digital baseband level.
The group delay precorrector corrects the phase and frequency response of any power filterthat is used. The linearity precorrector separately corrects the amplitude and the phase of the time signalas a function of amplitude. The predistorted digital baseband signals are finally passed tothe RF interface board.
The precorrection is optional available for automatic and adaptive mode (AdE).
