Metropolitan Spectrum Survey in Bogota Colombia

Abstract

This paper describes the details and results of a spectrum occupancy measurement campaign that took place in Bogota (Colombia) from March to June 2012. The scope of the study includes all frequency bands ranging from 54 MHz to 6 GHz. Measurements are sorted according to different bands and services so as to provide a clear insight into the typical duty cycles associated to different technologies. Results suggest that current spectrum utilization remains remarkably low even in busy metropolitan areas in capital cities (namely an outdoor metropolitan environment).

A spectral opportunities forecasting method in a mobile network based on the integration of COST 231 Walfisch-Ikegami and wavelet neural models

“…Therefore, the total NF is 5.14dB. The duty cycle resulting from Equation (14) for the proposed method in the sector of the BS cell of the external environment in Figure 2 is seen below: Fig. 9.…”

“…A CR is an intelligent radio aware of the context, which is able to reconfigure itself in an autonomous way to learn and adapt to the radio environment around it [3]. The research in CR has been motivated by the results of the spectrum measurement campaigns around the world [4][5][6][7][8][9][10][11][12][13][14]. These measurement campaigns show that the radioelectric spectrum is underused in terms of frequency, time and geographical space [5, 7-9, 11, 14].…”

Linear Algorithms for Radioelectric Spectrum Forecast

“…The decision to carry out this study was made during the spectrum measurements campaign held in Bogota-Colombia where we obtained the measurements employed here from spectrum occupancy study previously carried out [1,32]. The band analyzed was the GSM 850 MHz, as it is a band constantly used and viable for analysis in time function with conventional equipment, like a spectrum analyzer.…”

Pronóstico de Oportunidades de Espectro Radioeléctrico en una Red Móvil con base en el Modelo de Propagación Interino de la Universidad de Stanford

“…Una CR es una radio inteligente consciente del contexto, que es capaz de reconfigurarse de manera autónoma para aprender y adaptarse al entorno de radio que la rodea (Akyildiz et al, 2006;Hernández et al, 2015). La investigación en CR ha sido motivada por los resultados de las campañas de medición de espectro realizadas en todo el mundo (Sanders, 1997;Chiang et al, 2007;Chen et al, 2009;Lopez y Casadevall, 2010;Wellens y Mahonen, 2010;Patil et al, 2011;Rocke y Wyglinski, 2011;Taher et al, 2011;Pedraza et al, 2013;Al-Hourani et al, 2015;Mehdawi et al, 2015). Estas campañas de medición muestran que el espectro radioeléctrico está subutilizado en los dominios de frecuencia, tiempo y espacio geográfico (Chiang, et al, 2007;Lopez y Casadevall, 2010;Wellens y Mahonen, 2010;Patil et al, 2011;Taher et al, 2011;Pedraza et al, 2013).…”