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Demodulate Noisy 16-APSK Signal Using Simulink

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Apply 16-APSK modulation to a signal of random data. Pass the modulated signal through an AWGN channel. Demodulate the noisy 16-APSK signal. Check the bit error rate (BER).

The slex_16apsk_mod model passes a 16-APSK modulated signal through an AWGN channel, demodulates the signal and then computes the error rate statistics. The example reports the bit error rate (BER) at two EbN0 settings.

Run the model with the EbN0 of the AWGN channel block set to 6 dB. The results are saved to the base workspace variable ErrorVec in a 1-by-3 row vector. The first element contains the BER.

With EbN0 set to 6 dB, BER: 0.160

Change the EbN0 of the AWGN channel block to 10 dB. Run the model and observe the decrease in BER.

With EbN0 set to 10 dB, BER: 0.031