
Using Euler’s Formula to Derive Sine and Cosine posted on November 24, 2021
Polyphase Half Band Filter for Decimation by 2 posted on September 29, 2021
Why Does the DFT Need Windowing Functions? posted on September 1, 2023
Building a PSK and QAM Modulator in Python posted on June 8, 2022
Basic Rules for Complex Numbers posted on September 17, 2021
Deriving the Ideal Low Pass Filter (LPF) posted on October 1, 2022
Designing an FIR High Pass Filter with Remez posted on September 23, 2021
Square Root Raised Cosine Filter in Python posted on November 10, 2021
Introduction to Interpolation and Upsampling posted on September 1, 2022
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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