
Polyphase Half Band Filter for Decimation by 2 posted on September 29, 2021
Designing FIR Filter Gain posted on February 23, 2022
Calculate Signal to Noise Ratio (SNR) in Python Simulation posted on July 1, 2024
Building a PSK and QAM Modulator in Python posted on June 8, 2022
Cross Correlation: Explaining Time Lags posted on January 12, 2022
Half Band Filter Design: Exceptional Filtering Efficiency! posted on September 27, 2021
Efficient Real to Complex Conversion with a Half Band Filter posted on December 15, 2021
Fourier Transform Explanation as a Cross-Correlation posted on December 22, 2021
Installing GNU Radio and B200 mini SDR posted on November 1, 2023
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.