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We study the statistical characteristics of radio environment noise, in particular focusing on spurious received power arising from adjacent channel interference, harmonics and wideband man-made interference. Unlike the majority of existing studies, our measurements enable a comprehensive study on frequencies ranging from 80MHz to 2.64 GHz instead of being focused on the properties of an application-specific...
The estimation of IEEE 802.11 Wi-Fi access point (AP) densities is an important cornerstone in deriving accurate models for the deployment structure of opportunistic wireless networks. Such densities are usually derived through large-scale wardriving-like measurement campaigns with COTS devices. Due to shielding, limited receiver sensitivity, and sampling density constraints, in general only a subset...
We present results from an 8-day spectrum measurement campaign in the centre of the London metropolis. We analyze results from one of the densest central areas in our campaign from the perspective of spectrum measurements at a very exposed location at the roof of a high building. We present the main results of this measurement campaign in terms of spectrum utilization, powers received, and evolution...
We report initial results from 48 hour spectrum occupancy measurement campaign that was done in time-correlated fashion in seven different European locations. We give a description of the measurement campaign and provide results from our preliminary analysis of overall duty cycle in the frequency range 110–3000 MHz. The paper particularly focuses on traffic and duty cycle patterns in GSM 900 and GSM...
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