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Polyphase Half Band Filter for Decimation by 2 posted on September 29, 2021
Single Pole IIR Filter: Substitute for Moving Average Filter posted on August 10, 2022
Introduction to Interpolation and Upsampling posted on September 1, 2022
Fourier Transform Pairs of Conjugation and Time Reversal posted on November 17, 2021
Half Band Filter Design Function in Python posted on December 8, 2021
Bandwidth of a Moving Average Filter posted on August 3, 2022
Install and Run LaTeX on macOS posted on January 5, 2022
Basic Rules for Complex Numbers posted on September 17, 2021
Building a PSK and QAM Modulator in Python posted on June 8, 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)
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