% Compute BER [~, ber(idx)] = biterr(data, rxBits); end

– The synchronized symbols enter a QPSK Demodulator Baseband block. Hard or soft decisions can be output.

Enter and Simulink —two industry-standard platforms that have revolutionized how engineers design, simulate, and prototype digital communication systems. While MATLAB provides a script-based environment for algorithmic exploration and numerical computing, Simulink offers a graphical, model-based design framework for system-level simulation and hardware implementation.

% Add AWGN snr = EbNo_dB(idx) + 10*log10(log2(M)); % Convert Eb/No to SNR rxSig = awgn(modSig, snr, 'measured');