PHASE ERROR ESTIMATION METHOD FOR A DEMODULATOR IN AN HDTV RECEIVER

摘要

receiver for processing a VSB modulated terrestrial broadcast high definition television information and a signal including a pilot component is demodulated carrier recovery network for generating a base band signal ; and a ( 22, Figure 3) . Carrier recovery network , for example, a control signal indicative of the phase offset caused by localized unwanted due to multi-path distortion of the pilot signal ; and in addition to the reaction ( phase offset 360 ) . The control signal is used to compensate for the pilot phase offset before the demodulated signal is equalized (equalized). The control signal is generated by correlating the received synchronization value to the Hilbert transform signal value 363 based on both the value of the synchronization signal 362 and a reference synchronizing signal value . The output of the carrier recovery network signal is twice the phase compensation .