
Introduction to Interpolation and Upsampling posted on September 1, 2022
Designing FIR Filter Gain posted on February 23, 2022
Phase, Frequency and Negative Frequency in Complex Sinusoids posted on October 19, 2021
Deriving the Ideal Low Pass Filter (LPF) posted on October 1, 2022
Install and Run LaTeX on macOS posted on January 5, 2022
Cross Correlation Explained With Real Signals posted on December 1, 2021
Product to Sum Trigonometric Identities with Euler’s Formula posted on June 15, 2022
How to Create Additive White Gaussian Noise (AWGN) posted on June 1, 2022
Building a PSK and QAM Modulator in Python posted on June 8, 2022
ADC Saturation: Why More Gain Isn’t Always Better posted on May 18, 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.