ok,I will tell the details of the problem I encountered:
This code is officially given. The name is “DSP_Algorithm_Module.m”, and I want to implement the Stokes mapping of DP-8PSK. Stokes mapping is completed before equalization, phase estimation, and frequency offset estimation. But when I try to insert my code, I can’t get the correct result. Only when the SampleperSymbol = 0.5; can the Poincaré ball appear, but the final output is wrong because the second DSP cannot get the data. So I want to ask if there is a problem with the official code.