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Wireless services that rely on Dynamic Spectrum Access (DSA) or spectrum sharing mechanisms require a well-defined means to communicate how each device or system is using spectrum resources in a particular environment or situation so that the devices that receive such information can make rational decisions on the possible use of the spectrum. Spectrum consumption models (SCMs) address this issue...
Most High Frequency (HF) communications systems deployed on the field today implement ALE (Automatic Link Establishment) techniques in order to help the end-user automatically set up a link with good properties. Two generations (so called 2G and 3G ALE) have been standardized since the 90s, and are today being revisited due to the emergence of wideband HF waveforms. In this paper, we model ALE protocols...
In this paper we introduce and verify our Automated Covert Channel Modeling (ACCM) framework for evaluating and modeling covert channel algorithms. This work continues our efforts we reported at MILCOM 2013. Our ACCM framework is defined based on two different use cases: ACCM-Sim is designed to model covert channel algorithms in a simulation environment, whereas our ACCM-Net can be utilized to evaluate...
The design and development of Galileo receivers will be a key factor to determine the market approach and penetration. The massive use of the Galileo services will be impacted, as well as the estimated economical return of the Galileo linked activities. In general, GNSS receivers use similar mathematical models for the computation of the global positioning from a standard parameter set. However, receivers...
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