![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-150x150.png)
![Average power for a signal](https://www.wavewalkerdsp.com/wp-content/uploads/2024/06/averagePower-150x150.png)
Calculate Average Signal Power
June 1, 2024
![Figure 2: Bartlett estimate of power spectral density (PSD) for QPSK](https://www.wavewalkerdsp.com/wp-content/uploads/2023/09/BartlettMethodPowerSpectralDensityPSDEstimate_QPSKPSD-150x150.png)
![Barker Code Length 11 Auto-correlation Magnitude](https://www.wavewalkerdsp.com/wp-content/uploads/2023/09/BarkerCodeAutocorrelationProperties_autocorrelationBarkerCode11-150x150.png)
Barker Code Auto-Correlation Properties
March 1, 2024
![Equation for the power spectral density.](https://www.wavewalkerdsp.com/wp-content/uploads/2024/02/WhatIsPSD-150x150.png)
What is Power Spectral Density (PSD)?
February 1, 2024
![Energy equation for a discrete-time signal.](https://www.wavewalkerdsp.com/wp-content/uploads/2023/05/energy_equation-150x150.png)
Power and Energy in Discrete-Time Signals
December 1, 2023
![Starting GNU Radio Companion](https://www.wavewalkerdsp.com/wp-content/uploads/2023/04/gnuradio_companion-150x150.png)
Installing GNU Radio and B200 mini SDR
November 1, 2023
![Figure 2: The periodicity of a complex sinusoid can be seen easier in three dimensions.](https://www.wavewalkerdsp.com/wp-content/uploads/2023/03/WhyDoesTheDFTNeedWindowingFunctions_complexSinusoidCircular-150x150.png)
Why Does the DFT Need Windowing Functions?
September 1, 2023
![Figure 4: A windowing function trades smearing and widening the peak with reducing sidelobes.](https://www.wavewalkerdsp.com/wp-content/uploads/2023/04/WindowingFunctionsForBetterSpectralAnalysis_freqDomainComparisonZoom-150x150.png)
Windowing Functions for Better Spectral Analysis
August 1, 2023
![Figure 3: The Bartlett Window frequency response with length N=31.](https://www.wavewalkerdsp.com/wp-content/uploads/2022/12/BartlettTriangularWindowFrequencyResponse_frequencyDomainNOdd-150x150.png)