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Ingeniería e Investigación

Print version ISSN 0120-5609

Abstract

CARDENAS-CASTIBLANCO, J.R.. Mechanism of interchange between the reflections in a channel of communications with the power spectral density. Ing. Investig. [online]. 2017, vol.37, n.2, pp.60-66. ISSN 0120-5609.  http://dx.doi.org/10.15446/ing.investig.v37n2.58049.

The theoretical limit given by the Shannon Capacity equation has been the origin of communications systems based on the interchange between bandwidth and power. This article explores the interchange between the power spectral density and the reflections that can be generated in a communications channel, with the ultimate aim of being able to decrease the power spectral density for the same capacity. The reflections can be expressed as a number of controlled reflections or by a reflection coefficient. The channels studied show that this exchange is possible. A new model based on feedback circuits was found to represent a transmission line, which was useful to study the MISO channel formed by several transmission lines of different length. A geometric elliptic dispersion model to represent a SISO channel was studied too.

Keywords : Transfer function; multipath channel; channel model; channel capacity; transmission line.

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