Signals & Systems I: Essential Bandwidth and Modulation Techniques

This lecture covers the concept of essential bandwidth in signals and systems, including the Parseval relation and modulation techniques such as amplitude modulation with carrier and single sideband. It also delves into demodulation techniques, low pass filters, and the limitations of synchronous demodulation. The lecture explores the complexities of envelope detection, over-modulation cases, and classical broadcasting methods. Additionally, it discusses single sideband modulation, frequency multiplexing, and heterodyne demodulation, emphasizing the importance of band pass filters and intermediate frequency adjustments.