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. If you would like to support me to make these videos, you can join the Channel Membership, by hitting the "Join" button below the video, and making a contribution to support the cost of a coffee a month. It would be very much appreciated. Or by clicking here:    / @iain_explains   Check out my 'search for signals in everyday life', by following my social media feeds: Facebook: https://www.facebook.com/profile.php?... Instagram:   / iainexplains   Website: http://www.iaincollings.com Related videos: (see http://www.iaincollings.com ) • What is Autocorrelation?    • What is Autocorrelation?   • Autocorrelation and Power Spectral Density (PSD) Examples in Digital Communications    • Autocorrelation and Power Spectral Density...   • What does Wide Sense Stationary (WSS) mean?    • What does Wide Sense Stationary (WSS) mean?   • What is a Random Process?    • What is a Random Process? ("Best video on ...   • What is a Poisson Process?    • What is a Poisson Process?   • What is a Probability Density Function (pdf)?    • What is a Probability Density Function (pd...   • What is a Multivariate Probability Density Function (PDF)?    • What is a Multivariate Probability Density...   • Expectation Equation Explained    • Expectation of a Random Variable Equation ...   • What is White Gaussian Noise (WGN)?    • What is White Gaussian Noise (WGN)?   • Duality Example in Fourier Transforms    • Duality Example of Fourier Transforms   • Fourier Transform Duality Rect and Sinc Functions    • Fourier Transform Duality Rect and Sinc Fu...   Full categorised list of videos and PDF summary sheets: http://iaincollings.com