Lecture
This lecture covers the concepts of narrow band and spread spectrum communications, including historical modulation techniques like AM and FM, as well as digital modulations. It also delves into the harmonic signals in narrow band and spread spectrum transmissions, discussing the uncertainty of sinusoidal values and the correlation of harmonic signals. The lecture explores the estimation of spectral lines and amplitudes using annihilating filters and the MUSIC algorithm, highlighting the robustness of MUSIC in noisy environments. Practical MATLAB exercises are provided to estimate line spectra and compare results using different methods.