Distortion corrector for the adaptive base band correction of a phase- modulated signal

摘要

Apparatus is described for adaptively correcting distortion in phase modulation signals following demodulation. Binary signals indicating the position of a signal vector of the demodulated signal for each modulation period are formed, and from this an indication of the error angle of that vector is obtained. A corresponding fault signal controls adjustment of the demodulated signal applied to a decoder to provide for distortion correction.