The maximum likelihood (ML) phase error detector (PED) for 16-APSK is derived and analyzed. The ML PED is used as part of a phase lock loop (PLL) to perform carrier phase synchronization and, to a limited extent, frequency offset synchronization. Compared to other PEDs suitable for use with 16-APSK, the results show that a PLL using the ML PED achieves lower estimator error variance than a PLL using the other PEDs at low signal-to-noise ratios. As the signal-to-noise ratio increases, the performance of the PLL based on all the PEDs are the same.
On the Maximum Likelihood Non-Data-Aided Phase Error Detector for 16-APSK
2022-03-05
2929073 byte
Conference paper
Electronic Resource
English
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