What is Power Spectral Density (PSD)?

Explains PSD of random signals from both an intuitive and a mathematical perspective. Explains why it is a "density" and shows the link to Autocorrelation with two common examples in digital communications. Check out my search for signals in everyday life, by following my social media feeds: Facebook: https://www.facebook.com/profile.php?id=100091651540952 Instagram: https://www.instagram.com/iainexplains/ Related videos: (see http://www.iaincollings.com ) • What is Autocorrelation? https://youtu.be/hOvE8puBZK4 • Autocorrelation and Power Spectral Density (PSD) Examples in Digital Communications https://youtu.be/XWytSLZZP1A • What does Wide Sense Stationary (WSS) mean? https://youtu.be/aGxGIYBxFpI • What is a Random Process? https://youtu.be/W28-96AhF2s • What is a Poisson Process? https://youtu.be/5uLxFmhYnl0 • What is a Probability Density Function (pdf)? https://youtu.be/jUFbY5u-DMs • What is a Multivariate Probability Density Function (PDF)? https://youtu.be/fKTBKmx0NS8 • Expectation Equation Explained https://youtu.be/334ZWt28b_0 • What is White Gaussian Noise (WGN)? https://youtu.be/QfUQMzHfbxs • Duality Example in Fourier Transforms https://youtu.be/2FoJrppVZuk • Fourier Transform Duality Rect and Sinc Functions https://youtu.be/rUgBhEpeqxo Full categorised list of videos and PDF summary sheets: http://iaincollings.com