Digital Communication Systems | Using Matlab And Simulink Fixed

% Add AWGN snr = EbNo_dB(idx) + 10*log10(1); % 1 bit/symbol => EbNo = SNR rxSig = awgn(txSig, snr, 'measured');

Figure: A typical QPSK transmitter-receiver model in Simulink (source: MathWorks). End of Report digital communication systems using matlab and simulink

% Plot results figure; semilogy(EbNo_dB, ber_sim, 'bo-', EbNo_dB, ber_theory, 'r*-'); grid on; xlabel('Eb/No (dB)'); ylabel('BER'); legend('Simulated BPSK', 'Theoretical BPSK'); title('BER Performance of BPSK in AWGN'); % Add AWGN snr = EbNo_dB(idx) + 10*log10(1);

% Decision: >0 -> 1, <0 -> 0 rxBits = rxSig > 0; % 1 bit/symbol =&gt

% BER calculation ber_sim(idx) = sum(rxBits ~= data) / numBits; end