Elaheh Askari

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one of the most important constraints in traditional wireless sensor networks is the limited amount of energy available at each sensor node. The energy consumption is mainly determined by the choice of media access mechanism. SMAC is a typical access mechanism that has drawn much attention in recent years. In WSNs, sensors are usually equipped with(More)
A cognition scheme, whereby nodes are enabled with the full-duplex technology at the PHY layer in conjunction with packet fragmentation at the MAC layer, is proposed to increase the performance of cognitive radio networks. As full-duplex allows doubling the throughput by equipping secondary users (SUs) with the capability to sense and transmit(More)
Recent advances in wireless communications promised the realisation of a revolutionary technique, called full-duplex (FD), which allows communication in both directions at the same time and over the same channel. However, the viability of FD in the physical layer requires the support of the MAC layer to fully spread the advantages of this technology to the(More)
This paper presents a hybrid method based on Generalized Predictive Control (GPC) and Imperialist Competitive Algorithm (ICA) for simultaneous coordinate design of two Power System Stabilizers (PSSs) to damp the multi-machine power system low frequency oscillations. A sequential linearized model predictive controller based on the GPC is designed and an(More)
In this paper, we present a novel analytical model for the service delay in IEEE 802.11 networks. This model is capable of closely tracking service delay's behavior in real wireless local area networks. We find a compact closed-form expression for the probability-generating function (PGF) of service delay using which all higher-order moments are achievable.(More)
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