| 摘要 |
In a circuit arrangement for correcting phase errors of P-channel and Q-channel baseband signals of a QPSK signal, input registers are provided corresponding respectively to possible bit patterns which the unique words of the P-channel and Q-channel baseband signals may assume. Each input register stores 2N bits of incoming unique words of the P- and Q-channel signals. Reference registers corresponding to the possible bit patterns are provided for individually storing 2N bits of a corresponding one of the possible bit patterns. Mismatches between the bits stored in each input register and the corresponding reference register are detected and compared with thresholds to produce a phase error correcting signal. In response, the connecting paths of the P- and Q-channel baseband signals to output terminals are controlled and bit reversals are effected on the P- and Q-channel baseband signals.
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