Ruido en sistemas de comunicaciones | 9/13 | UPV

Title: Noise in Communication Systems Description: Calculation of the signal-to-noise ratio in a communication system. Noise generated by common elements of a communication system. Camacho García, A. (2009). Noise in Communication Systems. https://riunet.upv.es/handle/10251/4844 Automatic description: In this video, a professor from the communications department of the Polytechnic University provides an explanation of noise in communication systems. The video addresses noise generated by resistors, amplifiers, and passive quadrupoles, as well as noise picked up by antennas. It introduces the relationship between temperature and noise in resistors and uses the universal constant to calculate the total noise power. The video details how noise is generated in amplifiers and how it is characterized by an equivalent noise temperature that manufacturers provide in their catalogs as the noise factor. It explains the importance of the noise factor in evaluating how the signal is affected by noise throughout the system. The discussion also includes passive systems, where parameters such as attenuation and physical temperature determine noise generation. For antennas, the noise picked up varies depending on their location, and a parameter called the antenna factor is introduced. Furthermore, the video analyzes how various cascaded systems affect gain and total noise, concluding with a practical example of the signal-to-noise ratio in a television installation. It demonstrates how to calculate the noise generated by different elements of a communications system and their combinations. The video concludes by summarizing how to effectively calculate and consider total noise in communications systems. Author: Andrés Camacho García Course: This video is 10/51 of the course Signal Processing in Communications | Universitat Politècnica de València (UPV).    • Curso Tratamiento de señales en comunicaci...   Course: This video is 9/13 of the course Television Signals.    • Señales de televisión   Universitat Politècnica de València (UPV): https://www.upv.es More videos at:    / valenciaupv   Access our MOOCs: https://upvx.es #Noise generated by a system #Noise figure #Noise temperature #Noise factor #Noise generated by an antenna #SIGNAL THEORY AND COMMUNICATIONS