Modulaciones Digitales | 28/37 | UPV

Title: Digital Modulations Description: Camacho García, A. (2010). Digital Modulations. https://riunet.upv.es/handle/10251/7701 Automatic description: In this video, the communications professor at the Polytechnic University explains digital modulations. He discusses the grouping of bits into symbols, constellations, and how different signals are assigned to these symbols using in-phase and quadrature signals by combining sines and cosines. He mentions the existence of 16-symbol constellations for bits grouped in fours and describes how these symbols are transmitted and received through the antenna and processed in the receiver. The video also introduces the concept of the scatter plot and how it is used for signal sampling by analyzing the in-phase and quadrature components. The professor explains the Modulation Error Rate (MER) measurement, which evaluates signal quality based on the concentration of points in the constellation. Furthermore, it presents different types of digital modulation such as BPSK, QPSK, PSK, and QAM, and how these affect the shape of the signal spectrum. Finally, it addresses FSK modulation and how the quality of a digital signal can be determined by the bit error rate (BER), which depends on the signal-to-noise ratio and the type of modulation. The video concludes with a summary of the concepts covered. Author: Andrés Camacho García Course: This video is 39/51 of the course Signal Processing in Communications | Universitat Politècnica de València (UPV).    • Curso Tratamiento de señales en comunicaci...   Course: This video is 28/37 of the course Signal and Communications Theory.    • 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 #Symbols #Constellation #Mer #Signal Quality #Spectrum #Digital Modulations