Publication: ESTUDIO, MODELAMIENTO Y CARACTERIZACIÓN ESPACIAL DEL CANAL INALÁMBRICO EN LA BANDA DE 60 GHz
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Date
2017
Authors
GUICHARROUSSE VARGAS, PATRICK FRANCOIS
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Abstract
Un problema que ha enfrentado la industria de servicio de comunicaciones en la última década es el aumento exponencial de usuarios capaces de conectarse a internet de forma inalámbrica. Esto ha provocado que las bandas de frecuencias asignadas a las comunicaciones móviles se vean muy congestionadas. Además, dado que el ancho de banda disponible es limitado, dicha congestión genera una reducción en la velocidad de conexión de los usuarios.En los últimos años se han explorado bandas de frecuencias mayores con el propósito de ofrecer al usuario un mejor servicio en una banda complementaria, con mayor ancho de banda y mayores velocidades de conexión. En este contexto, una de las bandas de frecuencias explorada es la banda de 60 GHz.Una de las características más interesantes de la banda de 60 GHz es que presenta una resonancia con las moléculas de oxígeno, lo que produce una atenuación constante de 15[dB/km], a diferencia de las bandas adyacentes de 50 y 70 GHz cuya atenuación dependiendo de la humedad en el aire. Es por ello que la banda de 60 GHz se considera predecible en distintos escenarios.Este trabajo presenta una característica espacial del canal de comunicaciones inalámbricas en la banda de 60 GHz en un ambiente interior-interior, como son los pasillos en oficinas del Departamento de Electrónica y el efecto del quiebre de estos pasillos y de la transición pasillo -oficina sobre la potencia de la señal recibida. Se estudian las características espaciales del canal y se utilizan dos plataformas giratorias a diferentes alturas, en escenarios estáticos, sin dispersores cercanos; se analiza el comportamiento de la señal en tres ambientes de medición: LOS, NLOS y la transición entre ambos escenarios.Las mediciones se utilizaron para generar combinaciones de antenas omnidireccionales sintéticas, con las cuales se obtienen modelos para las pérdidas del trayecto en cada ambiente. Se corrobora que la señal se propaga de forma similar a una guía de onda en este tipo de escenario tipo pasillo. Además, se aprecia la presencia de un rayo dominante en este tipo de escenarios en ambientes LOS y NLOS.
One problem that the communications service industry has faced in the last decade is the exponential increase of users that are able to connect to the Internet wirelessly. This has caused the frequency bands assigned to mobile communications to be very congested. In addition, given that the available bandwidth is limited, such congestion generates a reduction in the connection speed of the users. In recent years, higher frequency bands have been explored in order to offer the user a better service in a complementary band, with greater bandwidth and higher connection speeds. In this context, one of the explored frequency bands is the 60 GHz band. One of the most interesting characteristics of the 60 GHz band is that it exhibits a resonance with the oxygen molecules, which produces a constant attenuation of 15 [dB / km], unlike the adjacent bands of 50 and 70 GHz which exhibit an attenuation that depends on the humidity in the air. That is why the 60 GHz band is considered predictable in different scenarios. This work presents a spatial characteristic of the wireless communications channel in the 60 GHz band in an interior-interior environment, such as the corridors in the Electronics Department and the effect of the breaking of these corridors and the corridor-office transition. the power of the received signal. The spatial characteristics of the canal are studied and two rotating platforms are used at different heights, in static scenarios, without nearby scatterers; The behavior of received the signal is analyzed in three environments: LOS, NLOS and the transition between both scenarios. The measurements were used to generate combinations of synthetic omnidirectional antennas, from which path loss models are obtained in each environment. It is shown that the signal propagates in a similar way to a waveguide in this type of scenario. In addition, the presence of a dominant beam is observed in LOS and NLOS environments
One problem that the communications service industry has faced in the last decade is the exponential increase of users that are able to connect to the Internet wirelessly. This has caused the frequency bands assigned to mobile communications to be very congested. In addition, given that the available bandwidth is limited, such congestion generates a reduction in the connection speed of the users. In recent years, higher frequency bands have been explored in order to offer the user a better service in a complementary band, with greater bandwidth and higher connection speeds. In this context, one of the explored frequency bands is the 60 GHz band. One of the most interesting characteristics of the 60 GHz band is that it exhibits a resonance with the oxygen molecules, which produces a constant attenuation of 15 [dB / km], unlike the adjacent bands of 50 and 70 GHz which exhibit an attenuation that depends on the humidity in the air. That is why the 60 GHz band is considered predictable in different scenarios. This work presents a spatial characteristic of the wireless communications channel in the 60 GHz band in an interior-interior environment, such as the corridors in the Electronics Department and the effect of the breaking of these corridors and the corridor-office transition. the power of the received signal. The spatial characteristics of the canal are studied and two rotating platforms are used at different heights, in static scenarios, without nearby scatterers; The behavior of received the signal is analyzed in three environments: LOS, NLOS and the transition between both scenarios. The measurements were used to generate combinations of synthetic omnidirectional antennas, from which path loss models are obtained in each environment. It is shown that the signal propagates in a similar way to a waveguide in this type of scenario. In addition, the presence of a dominant beam is observed in LOS and NLOS environments
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Keywords
CANAL DE COMUNICACION INALAMBRICA , MEDIDAS DE PROPAGACION , ONDAS MILIMETRICAS , PERDIDAS POR TRAYECTO , 60 GHZ