
 Introduction to Interpolation and Upsampling posted on September 1, 2022
 Deriving the Ideal Low Pass Filter (LPF) posted on October 1, 2022
 DFT Frequency Resolution Explained posted on March 16, 2022
 Building a PSK and QAM Modulator in Python posted on June 8, 2022
 Cross Correlation Explained With Real Signals posted on December 1, 2021
 Calculate Signal to Noise Ratio (SNR) in Python Simulation posted on July 1, 2024
 Efficient Real to Complex Conversion with a Half Band Filter posted on December 15, 2021
 Bandwidth of a Moving Average Filter posted on August 3, 2022
 Time Invariant and Time Varying Filters posted on September 3, 2021
 Half Band Filter Design: Exceptional Filtering Efficiency! posted on September 27, 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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