Nice, I never thought of PCM and CDMA in terms of basis functions, but you're totally right. Here are some links for anyone interested: https://en.wikipedia.org

Nice, I never thought of PCM and CDMA in terms of basis functions, but you're totally right. Here are some links for anyone interested: https://en.wikipedia.org/wiki/Pulse-code_modulation#Modulation https://en.wikipedia.org/wiki/Pulse-code_modulation#Modulati... https://en.wikipedia.org/wiki/Code-division_multiple_access#Example https://en.wikipedia.org/wiki/Code-division_multiple_access#... For further reading on orthogonal functions, here is a quick table that shows the bases used for the Fourier series (FS), Fourier transform (FT), and Discrete Fourier transform (DFT) from my linear algebra book: https://minireference.com/static/excerpts/fourier_transformations.pdf#page=2 https://minireference.com/static/excerpts/fourier_transforma...