MATLAB Examples

Demodulate Noisy MIL-STD-188 QAM Signal

Apply MIL-STD-188 QAM modulation to a signal of random data. Pass the modulated signal through an AWGN channel. Demodulate the noisy MIL-STD-188 QAM signal. Check the bit error rate (BER).

Run the slex_mil188_qam_demod 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: 0.182

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: 0.091