MULTIPLEXACIÓN POR DIVISIÓN DE FRECUENCIA Y ANCHO DE BANDA | 22/37 | UPV

Title: Frequency Division Multiplexing and Bandwidth Description: Frequency division multiplexing, bandwidth, single-sideband modulation. Camacho García, A. (2009). Frequency Division Multiplexing and Bandwidth. https://riunet.upv.es/handle/10251/4862 Automatic description: In this video, a professor from the communications department at the Polytechnic University introduces the concept of frequency division multiplexing and examines the use of bandwidth in communications. Initially, he explains how different signals can be transmitted simultaneously by modulating them with different carrier frequencies, avoiding interference and facilitating their subsequent recovery through demultiplexing. Then, he addresses double-sideband (DSB) modulation, which, despite its usefulness, has the drawback of consuming a lot of bandwidth. To solve this problem, single-sideband (SSB) amplitude modulation is presented, where only half of the frequency spectrum is transmitted, since the other half is symmetrical and therefore redundant. Finally, the use of Hilbert filters is discussed, which allow the transformation of SSB signals by shifting their phase by ninety degrees. These filters are applied to obtain lower or upper sideband modulations, optimizing the use of the frequency spectrum. The professor concludes by highlighting how SSB modulation is an efficient solution to the excessive bandwidth consumption problem associated with SSB modulation. Author: Andrés Camacho García Course: This video is 35/51 of the course Signal Processing in Communications | Universitat Politècnica de València (UPV).    • Curso Tratamiento de señales en comunicaci...   Course: This video is 22/37 of the Signals and Communications Theory course.    • Teoría de las señales y las comunicaciones   Universitat Politècnica de València UPV: https://www.upv.es More videos at:    / valenciaupv   Access our MOOCs: https://upvx.es #Amplitude Modulation #Synchronous Demodulation #Asynchronous Demodulation #Modulation Index