
Introduction to Interpolation and Upsampling posted on September 1, 2022
Bartlett Method Power Spectral Density (PSD) Signal Estimates posted on April 1, 2024
Efficient Real to Complex Conversion with a Half Band Filter posted on December 15, 2021
Building a PSK and QAM Modulator in Python posted on June 8, 2022
Single Pole IIR Filter: Substitute for Moving Average Filter posted on August 10, 2022
Installing GNU Radio and B200 mini SDR posted on November 1, 2023
Square Root Raised Cosine Filter in Python posted on November 10, 2021
Windowing Function Gain Normalization posted on January 1, 2025
Half Band Filter Design: Exceptional Filtering Efficiency! posted on September 27, 2021
Install and Run LaTeX on macOS posted on January 5, 2022








![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.