
 Introduction to Interpolation and Upsampling posted on September 1, 2022
 Cross Correlation Explained With Real Signals posted on December 1, 2021
 Deriving the Ideal Low Pass Filter (LPF) posted on October 1, 2022
 Building a PSK and QAM Modulator in Python posted on June 8, 2022
 Designing FIR Filter Gain posted on February 23, 2022
 Calculate Signal to Noise Ratio (SNR) in Python Simulation posted on July 1, 2024
 DFT Frequency Resolution Explained posted on March 16, 2022
 Efficient Real to Complex Conversion with a Half Band Filter posted on December 15, 2021
 Fourier Transform Pairs of Conjugation and Time Reversal posted on November 17, 2021
 Time Invariant and Time Varying Filters posted on September 3, 2021








![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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