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Polyphase Half Band Filter for Decimation by 2 posted on September 29, 2021
Complex Frequency Shifting in Discrete Time posted on January 1, 2023
What is Power Spectral Density (PSD)? posted on February 1, 2024
Half Band Filter Design: Exceptional Filtering Efficiency! posted on September 27, 2021
Install and Run LaTeX on macOS posted on January 5, 2022
Cross Correlation Explained With Real Signals posted on December 1, 2021
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
Single Pole IIR Filter Frequency Response posted on July 6, 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.