Modelo de radio propagación a través de un canal con ruido Gaussiano

José R. Fermín, Juan C. Pizarro

Abstract


We present a physical model of radio waves propagation through a channel with white Gaussian noise. The continuous channel is simulated using a dissipative linear model, which consists of a flexible string of uniform density and immersed into a thermal bath. The channel is characterized by signal to noise ratio, which is calculated as a function of temperature, frequency of the signal and the propagation distance. For some value of temperature, propagation distance and frequency, the SNR exceeds the threshold below which Shannon's error-free transmission is not possible.

Keywords


Linear system; thermal noise; signal to noise ratio (SNR); Gaussian channel; continuous channel

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Revista Mexicana de Física

ISSN: 2683-2224 (on line), 0035-001X (print)

Bimonthly publication of Sociedad Mexicana de Física, A.C.
Departamento de Física, 2o. Piso, Facultad de Ciencias, UNAM.
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Tel/Fax: (52) 55-5622-4946, (52) 55-5622-4840. rmf@ciencias.unam.mx