I want to do modulation classification among OQPSK and QPSK. For that I require downsampled constellation (samples per symbol=1) of OQPSK. I am unable to get that in the comm.OQPSKModulator and comm.OQPSKDemodulator block of MATLAB 2020b. So I modulated the signal on my own by following steps:
a. Split bits to odd (I) and even (Q)
b. Filter both I & Q streams, e.g., with raised-cosine or half-sine filtering
c. Delay the even-bit stream (Q) by half a simple and make a complex waveform I + j*Q
Now I want to demodulate it. Please tell me the correct steps so that I can get downsampled constellation before demodulation.I want to do modulation classification among OQPSK and QPSK. For that I require downsampled constellation (samples per symbol=1) of OQPSK. I am unable to get that in the comm.OQPSKModulator and comm.OQPSKDemodulator block of MATLAB 2020b. So I modulated the signal on my own by following steps:
a. Split bits to odd (I) and even (Q)
b. Filter both I & Q streams, e.g., with raised-cosine or half-sine filtering
c. Delay the even-bit stream (Q) by half a simple and make a complex waveform I + j*Q
Now I want to demodulate it. Please tell me the correct steps so that I can get downsampled constellation before demodulation. I want to do modulation classification among OQPSK and QPSK. For that I require downsampled constellation (samples per symbol=1) of OQPSK. I am unable to get that in the comm.OQPSKModulator and comm.OQPSKDemodulator block of MATLAB 2020b. So I modulated the signal on my own by following steps:
a. Split bits to odd (I) and even (Q)
b. Filter both I & Q streams, e.g., with raised-cosine or half-sine filtering
c. Delay the even-bit stream (Q) by half a simple and make a complex waveform I + j*Q
Now I want to demodulate it. Please tell me the correct steps so that I can get downsampled constellation before demodulation. oqpsk, demodulation, offset qpsk, modulation, modulation classification MATLAB Answers — New Questions

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