Digital Communication Systems Using - Matlab And Simulink

% Theoretical BER for BPSK ber_theory = qfunc(sqrt(2*10.^(EbNo_dB/10)));

% Add AWGN snr = EbNo_dB(idx) + 10*log10(1); % 1 bit/symbol => EbNo = SNR rxSig = awgn(txSig, snr, 'measured'); digital communication systems using matlab and simulink

% BER calculation ber_sim(idx) = sum(rxBits ~= data) / numBits; end % Theoretical BER for BPSK ber_theory = qfunc(sqrt(2*10

% 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'); % 1 bit/symbol =&gt

Figure: A typical QPSK transmitter-receiver model in Simulink (source: MathWorks). End of Report

% Decision: >0 -> 1, <0 -> 0 rxBits = rxSig > 0;