
Half Band Filter Design: Exceptional Filtering Efficiency! posted on September 27, 2021
DFT Frequency Resolution Explained posted on March 16, 2022
Polyphase Half Band Filter for Decimation by 2 posted on September 29, 2021
The DSP Family Tree: Grow Your Career posted on November 17, 2021
Introduction to Interpolation and Upsampling posted on September 1, 2022
Building a PSK and QAM Modulator in Python posted on June 8, 2022
Cross Correlation: Explaining Time Lags posted on January 12, 2022
Basic Rules for Complex Numbers posted on September 17, 2021
Calculate Signal to Noise Ratio (SNR) in Python Simulation posted on July 1, 2024
Using Euler’s Formula to Derive Sine and Cosine posted on November 24, 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.