| 摘要 |
A phase ambiguity processing method and device for a quadrature amplitude modulation signal. The phase ambiguity processing method comprises: judging symbols on an X polarization state and a Y polarization state of a received signal, and mapping to obtain first bit information, the received signal comprising a plurality of first signals; verifying and analyzing the first bit information to generate a first verification result; judging the first verification result to obtain a judgment result of whether the received signal has phase ambiguity or not; when the judgment result shows that the received signal has phase ambiguity, acquiring at least one first signal in the received signal; carrying out phase rotation on the first signal to obtain a second signal; and verifying and analyzing the second signal again, storing the second signal if a verification result is normal, and replacing the first signal with the second signal for decoding processing. A QAM signal is verified and judged, and error correction is carried out on the QAM signal when the QAM signal has phase ambiguity, such that the error rate of differential decoding of the QAM signal is reduced, system overhead is reduced, and system performance is improved. |
