How to do Bit Error Ratio Vs. Signal-to-Noise Ratio in semilog graph using Simulink?

Hi, I am using Simulink to simulate Direct Sequence Spread Sprectrum. But I am not sure how to observe the output and semilog graph for bit error ratio vs. signal-to-noise ratio. Would really appreciate any kind of answers and help. Thank you! (I have also included the Simulink file of the DSSS)

Answer 1

[Jogesh Kumar Mukala]

I understand that you want to observe the output frequency and plot a semilog graph for bit error ratio vs Signal to noise ratio.

The "Spectrum Analyzer" Simulink block can be used to display frequency-domain signals and the frequency spectrum of time-domain signals. "semilogx" MATLAB function can be used to plot a semilog graph. Please refer to the below documentation to know about bit error rate and Signal to noise ratio.

• Number of bit errors and bit error rate (BER) - MATLAB biterr - MathWorks India
• Signal-to-noise ratio - MATLAB snr - MathWorks India

You may also refer to below documentation to know more about "Spectrum Analyzer" Simulink block and "semilogx" MATLAB function.

• Display frequency spectrum - Simulink - MathWorks India
• Semilog plot (x-axis has log scale) - MATLAB semilogx - MathWorks India

[kiroro00]

I see, thank you!