| 摘要 |
<p>A phase error detecting method applied to a VSB receiver or a QAM receiver includes the steps of recovering Q-channel data by digitally filtering transmitted I-channel data, correcting the phases of the I-channel data and the Q-channel data according to a fed-back phase error, deciding an I-channel level value approximating the phase-corrected I-channel data among predetermined I-channel level values, obtaining a phase error value by subtracting the decided I-channel level value from the phase-corrected I-channel data, and multiplying the sign of the component of the difference by the difference, and applying a weight from a predetermined weighting function to the phase error value, and outputting the value as a weighted phase error value. Thus, the reliability of phase error detection can be increased. <IMAGE></p> |
