
Introduction to Interpolation and Upsampling posted on September 1, 2022
Polyphase Half Band Filter for Decimation by 2 posted on September 29, 2021
Complex Frequency Shifting in Discrete Time posted on January 1, 2023
How To Install GNU Radio Source Code posted on October 1, 2024
Calculate Average Signal Power posted on June 1, 2024
Designing FIR Filter Gain posted on February 23, 2022
Deriving the Ideal Low Pass Filter (LPF) posted on October 1, 2022
Oppenheim DSP Lectures YouTube Video Playlist posted on March 23, 2022
Calculate Signal to Noise Ratio (SNR) in Python Simulation posted on July 1, 2024
What is Power Spectral Density (PSD)? posted on February 1, 2024








![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.