Publication: Implementación de un sistema de antenas MIMO 2x2 en Labview
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2015-10
Defense date
2015-10-07
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Abstract
Las telecomunicaciones han avanzado a un ritmo vertiginoso a lo largo de los últimos años y, debido a las necesidades cada vez más grandes de unos usuarios cada vez más exigentes, tendrán que seguir haciéndolo en las próximas décadas para continuar ofreciendo unos servicios que satisfagan tales necesidades.
Es en este punto donde ha tomado un papel fundamental la ciencia sobre la que va a tratar esta memoria, la tecnología MIMO o de Múltiples Entradas y Múltiples Salidas (Multiple-Input Multiple-Output) que, como su propio nombre indica, se basa en el uso de múltiples antenas tanto en la transmisión como en la recepción de señales.
Mediante el uso de múltiples antenas se puede mejorar la diversidad espacial de un sistema, lo cual resulta imprescindible para disminuir su desvanecimiento multitrayecto, el cual es producido por los ecos recibidos en una antena a partir de una señal en diferentes instantes de tiempo. De esa manera, se puede conseguir una comunicación más eficiente en diversos aspectos como la tasa de envío de datos o la disminución del error en la señal recibida.
Con tales características, MIMO se ha convertido a lo largo de los últimos años en una alternativa más que atractiva para el desarrollo de los medios de transmisión inalámbricos. De esta forma, ha pasado a formar parte de los estándares de diversas e importantes tecnologías donde se pueden distinguir LTE (Long Term Evolution) o Wi-Fi entre otras. Además, es de suponer una constante evolución en los próximos años que haga de ella una opción incluso mejor para incorporarse progresivamente a más tipos de redes.
Vista como una simple combinación de numerosas antenas de transmisión y de recepción, la tecnología MIMO puede parecer algo sencillo. Sin embargo, los beneficios ya explicados son el resultado de diversas y complejas técnicas que, combinadas de la manera adecuada, tienen como consecuencia la obtención de tales beneficios.
Telecommunications have progressed immensely through the last years and due to the ever growing need of ever growing demanding users they would have to continue doing so during the next decades, in order to offer services that satisfy said needs. Is right now when the technology mentioned in this article, the MIMO technology (Multiple-Input Multiple-Output), has become very relevant; as the name suggests, it’s a technology based on multiple antennas used for signal transmission and reception. Thanks to the use of multiple antennas we can improve a system’s spatial diversity, which is vital to achieve multipath fading lowering, produced by the signal echoes received by the antenna in different time stamps. This way, we can achieve a more efficient communication in several aspects as the send data rate or the decrease of the error in the received signal. With these characteristics, MIMO has become through the last years in an alternative more than attractive for the development of wireless transmission systems. This way, this technique has become a part of the standards of several important technologies, such as LTE (Long Term Evolution) or Wi-Fi, among others. Moreover, we can wait for a constant evolution in the coming years, an evolution that will make out of this technology an even better option to progressively incorporate it into new types of networks. Seen as a simple combination of numerous transmission and reception antennas the MIMO technology may look as something easy. However, the already commented benefits are direct consequence of multiple complex techniques which mixed in a proper way produced said profits.
Telecommunications have progressed immensely through the last years and due to the ever growing need of ever growing demanding users they would have to continue doing so during the next decades, in order to offer services that satisfy said needs. Is right now when the technology mentioned in this article, the MIMO technology (Multiple-Input Multiple-Output), has become very relevant; as the name suggests, it’s a technology based on multiple antennas used for signal transmission and reception. Thanks to the use of multiple antennas we can improve a system’s spatial diversity, which is vital to achieve multipath fading lowering, produced by the signal echoes received by the antenna in different time stamps. This way, we can achieve a more efficient communication in several aspects as the send data rate or the decrease of the error in the received signal. With these characteristics, MIMO has become through the last years in an alternative more than attractive for the development of wireless transmission systems. This way, this technique has become a part of the standards of several important technologies, such as LTE (Long Term Evolution) or Wi-Fi, among others. Moreover, we can wait for a constant evolution in the coming years, an evolution that will make out of this technology an even better option to progressively incorporate it into new types of networks. Seen as a simple combination of numerous transmission and reception antennas the MIMO technology may look as something easy. However, the already commented benefits are direct consequence of multiple complex techniques which mixed in a proper way produced said profits.
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Antenas, Dispositivos transceptores, USRP-2920, Radiocomunicación, Redes de comunicación