The growing demand of mobile multicast services such as IPTV and video streaming requires effective radio resource management (RRM) to handle traffic with strict Quality of Service constraints over Long Term Evolution (LTE) and beyond systems. Special care is needed to limit the system performance degradation when multiple multicast streams are simultaneously transmitted. To this […]
Read moreIn this paper, we investigate the impact of jamming threats on the performance of LTE networks. First, we develop a three dimensional theoretical space to explore various jamming attacks. Next, we construct a set of attack scenarios by utilizing the dimensions of this space. To observe the impact onLTE network performance, we use ns-3 to implement the scenarios […]
Read moreThe use of wirelessly internetworked miniaturized biomedical devices is promising a significant leap forward in medical treatment of many pervasive diseases. Recognizing the limitations of traditional radio-frequency wireless communications in interconnecting devices within the human body, in this paper, we propose for the first time to develop network protocols for implantable devices based on ultrasonic transmissions. We start off by […]
Read moreMoving toward a carbon free energy system has become an objective for many countries nowadays. Among other changes, the electrification of strategic sectors, such as heating and transportation, is inevitable. As a consequence, the current power system load will substantially increase. In this context, the nature of the expected loads (heat pumps, plug-in electric vehicles, […]
Read moreCognitive radio is a potential technique to solve the spectrum shortage problem in wireless communications. Integrating wireless relaying into the cognitive radio networks can further improve the spectrum efficiency. In this study, a multiple-input multiple-output cognitive relay network is considered, where the primary network (PN) consists of one transmitter-receiver pair and the secondary network consists […]
Read moreFor efficient and reliable data transmission, the traffic load should be as uniformly distributed as possible in the network, and the average distance traveled by the data should be short. This criterion has been shown to be fundamental. The key design problem is therefore to find the optimal solution that achieves this criterion. With a […]
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An Opportunistic Transmission Protocol for Body Sensor Networks using RSSI and on-board accelerometer
Inter-communication between nodes in Body Sensor Networks can be interrupted by body movement. Body parts can reflect and absorb radio frequencies or block the radio signal that can disrupt the radio communication. In this paper, we have proposed an opportunistic radio transmission that uses the Received Signal Strength Indicator as feedback mechanism to improve the […]
Read moreWe investigate the process of transferring the activity recognition models within the nodes of a bodysensor network (BSN). In particular, we propose a methodology that supports and makes the transferring possible. Based on a collaborative training strategy, classifier ensembles of randomized trees are used to create activity recognition models that can successfully be transferred within the nodes of […]
Read moreNon-invasive human sensing based on radio signals has attracted numerous research interests and fostered a broad range of innovative applications of localization, gesture recognition, smart health-care, etc, for which a primary primitive is to detect human presence. Previous works have studied to detect moving humans via signal variations caused by human movements. For stationary people, […]
Read moreThe wide flexibility of LTE resource allocation scheme has led to the definition of various schedulers that attempt to maximize the quality of the service offered to the different users, depending on their channel conditions. Unfortunately, providing service guarantees in dynamic channel conditions typically requires a cost in terms of spectral efficiency of the transmission resource allocation. […]
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