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For the Differential Demodulation part, connect the 1-bit differential demodulation module and NRZI decoding module designed in this article to the system, process the received AIS signal, and obtain the final signal.
As shown in the upper right image, we have found the frame header of the signal and successfully decoded and demodulated the AIS signal. By comparing the final signal with the initial transmission signal, the error rate can be calculated to be 1.73% at a signal-to-noise ratio of 15dB.
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IEEE/ICACT20250166 Slide.17
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