
Cross Correlation Explained With Real Signals posted on December 1, 2021
ADC Saturation: Why More Gain Isn’t Always Better posted on May 18, 2022
Deriving the Ideal Low Pass Filter (LPF) posted on October 1, 2022
Polyphase Half Band Filter for Decimation by 2 posted on September 29, 2021
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
Fourier Transform Pairs of Conjugation and Time Reversal posted on November 17, 2021
Complex Frequency Shifting in Discrete Time posted on January 1, 2023
Why Does the DFT Need Windowing Functions? posted on September 1, 2023
Band Pass Single Pole IIR Filter Design posted on February 1, 2023








![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.