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Half Band Filter Design Function in Python posted on December 8, 2021
Building a PSK and QAM Modulator in Python posted on June 8, 2022
Complex Frequency Shifting in Discrete Time posted on January 1, 2023
Comb Filter Introduction and Analysis posted on March 1, 2023
Discrete Fourier Transform (DFT) of Complex Sinusoid posted on May 1, 2023
Introduction to Interpolation and Upsampling posted on September 1, 2022
Aliasing, Sampling and Spinning Car Tires posted on November 10, 2021
What is Power Spectral Density (PSD)? posted on February 1, 2024
Single Pole IIR Filter: Substitute for Moving Average Filter posted on August 10, 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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