
Polyphase Half Band Filter for Decimation by 2 posted on September 29, 2021
Designing FIR Filter Gain posted on February 23, 2022
Band Pass Single Pole IIR Filter Design posted on February 1, 2023
Half Band Filter Design: Exceptional Filtering Efficiency! posted on September 27, 2021
Deriving the Ideal Low Pass Filter (LPF) posted on October 1, 2022
Bartlett (Triangular) Window Analysis With Python Code posted on July 1, 2023
Building a PSK and QAM Modulator in Python posted on June 8, 2022
Cross Correlation: Explaining Time Lags posted on January 12, 2022
GNU Radio Tutorials: Half-Way Review posted on January 13, 2022
Introduction to Interpolation and Upsampling posted on September 1, 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.