
Building a PSK and QAM Modulator in Python posted on June 8, 2022
Calculate Signal to Noise Ratio (SNR) in Python Simulation posted on July 1, 2024
Designing FIR Filter Gain posted on February 23, 2022
Introduction to Interpolation and Upsampling posted on September 1, 2022
Using Euler’s Formula to Derive Sine and Cosine posted on November 24, 2021
Efficient Real to Complex Conversion with a Half Band Filter posted on December 15, 2021
Fourier Transform Explanation as a Cross-Correlation posted on December 22, 2021
Cross Correlation: Explaining Time Lags posted on January 12, 2022
Cross Correlation Explained With Real Signals posted on December 1, 2021
Polyphase Half Band Filter for Decimation by 2 posted on September 29, 2021








![A BPSK signal s[n], real Gaussian noise w[n], and the received signal x[n] = s[n] + w[n] for SNR = 20 dB](https://www.wavewalkerdsp.com/wp-content/uploads/2023/12/HowToComputeSignalToNoiseRatioSNRInSimulation_signalNoiseTimeDomain-300x240.png)
The third edition of DSP for Beginners: Simple Explanations for Complex Numbers! Includes a new chapter on sampling.