
Building a PSK and QAM Modulator in Python posted on June 8, 2022
Bandwidth of a Moving Average Filter posted on August 3, 2022
Polyphase Half Band Filter for Decimation by 2 posted on September 29, 2021
Windowing Functions for Better Spectral Analysis posted on August 1, 2023
Investing Time Into Younger Engineers posted on October 1, 2023
Fourier Transform Pairs of Conjugation and Time Reversal posted on November 17, 2021
Calculate Signal to Noise Ratio (SNR) in Python Simulation posted on July 1, 2024
Deriving the Ideal Low Pass Filter (LPF) posted on October 1, 2022
Installing GNU Radio and B200 mini SDR posted on November 1, 2023
Trigonometric Identity: sin(x)^2 + cos(x)^2 = 1 posted on March 9, 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)
The third edition of DSP for Beginners: Simple Explanations for Complex Numbers! Includes a new chapter on sampling.