Báo cáo hóa học: " Research Article A Novel Secure Localization Approach in Wireless Sensor Networks" pot

... proposed,including triangulation and RF-based ﬁngerprinting, tomake localization attack-tolerant. SPINE [8] is a range-basedpositioning system that enables veriﬁable multilaterationand veriﬁcation of positions ... H(ts).An example of the distance-consistent spooking attack isshown in Figure 1 (a) . As two colluding attackers A 1and A 2can communicate with each other via an attack link,locatorsL4, L5and ... can see that as the ρlincreases, theprobability of successful localization also increases. This ismainly because the increase of ρlenlarges the probabilityof detecting at least two attacked...

Báo cáo hóa học: "Research Article A Novel Distributed Privacy Paradigm for Visual Sensor Networks Based on Sharing Dynamical Systems" pptx

... to obtain additional side information in the form of an image. As another example, in health carefacilities [1, 2], one may measure a patient’s vital statistics,such as heart rate, using sensors. ... (i.e., all the shares and the initial stateHindawi Publishing CorporationEURASIP Journal on Advances in Signal ProcessingVolume 2007, Article ID 21646, 17 pagesdoi:10.1155/2007/21646 Research Article A ... distributed approach to protect dense VSNs against eavesdropping at-tacks. Other security issues including authentication, mes-sage freshness and replay, key management, physical and ac-tuation attacks, and...

Báo cáo hóa học: " Research Article Modelling and Implementation of QoS in Wireless Sensor Networks: A Multiconstrained Trafﬁc Engineering Model" pdf

... mechanism to avoid intensive usageof the shortest path. Assuming sources transmitting datapackets at a constant rate, [17] proposes a multipath routingscheme formulated as a linear programming ... extent and movement of gas back tonearby UAVs and take appropriate decisions concerning anevacuation plan. Embedding sensors in roadbeds, alongsidehighways, or bridge structures and placing cameras ... to make roads safer, reducecongestion, help people ﬁnd the nearest available parkingspace in an unfamiliar city, achieve routing assistance, orprovide early warnings on weather-related road...

Báo cáo hóa học: " Research Article A Multievent Congestion Control Protocol for Wireless Sensor Networks" pptx

... node a are associated with sameinformation ﬂow.MCCP uses minimum hop forwarding at the routinglayer. In order to achieve minimum hop routing, each nodemaintains a next hop table which contains ... fromthe sink. Each node maintains data and schedule intervals,therefore, the operation of MCCP can be subdivided intoschedule interval and data interval operations. Each scheduleinterval is followed ... sink. The overheads ofmaintaining schedule packets while using 3, 4, 5, and 6seconds of data intervals are 5.4%, 3.9%, 4%, and 3.75%,respectively. Increasing the length of data interval above...

Báo cáo hóa học: " Research Article Constructing Battery-Aware Virtual Backbones in Wireless Sensor Networks" docx

... Chi Ma et al. 15[18] C. Ma and Y. Yang, “Battery-aware routing in wireless ad hocnetworks—part II: battery-aware routing,” in Proceedings o fthe 19th Internat i onal Teletraﬃc Congress ... Jamieson, H. Balakrishnan, and R. Morris, “Span:an energy-eﬃcient coordination algorithm for topology main-tenance in ad hoc wireless networks,” in Proceedings of the7th Annual International ... V.Raghunathan,C.Schurgers,S.Park,andM.B.Srivastava,“Energy-aware wireless microsensor networks,” IEEE SignalProcessing Magazine, vol. 19, no. 2, pp. 40–50, 2002.[25] A. Mainwaring, J. Polastre,...

Báo cáo hóa học: "Research Article Mobile Agent-Based Directed Diffusion in Wireless Sensor Networks" doc

... impact of Sdata, r,andρ on P.the increase of Sdata.Ifρ = 1, all the sensory data will be fusedinto a data with ﬁxed size. We expect that as ρ decreases, theadvantagesofMADDwilldecrease.Aswetakeaconservative approach ... thetarget sensors along a single path.4.2. Mobile agent packet formatThe information contained in an MA packet is shown in Figure 4. The pair of SinkID and MASeqNum is used to iden-tify an MA ... by MADSN.This limitation of clustering can be addressed by a ﬂat sensor 8 EURASIP Journal on Advances in Sig nal ProcessingThen, Tmacan be calculated as follows:Tma=Tpndata+ Troam+...

báo cáo hóa học:" Research Article A Semianalytical PDF of Downlink SINR for Femtocell Networks" pot

... was studied in [10] assuming singletransmitter and receiver pair. In this paper, we derive the PDF of the SINR for thedownlink of a cell area in a semianalytical fashion. A practicalpropagation ... be easily examined by employingappropriate path loss models. The basic parameters used forthe comparison are summarised in Tabl e 1.We assume that all interfering BSs are located at thesame ... placement of BSs in a random and uncoordinated fashionis unavoidable and may generate high interference scenariosand dead spots particularly in an indoor environment.Let Ptsbe the transmission...

Báo cáo hóa học: "Research Article Efﬁcient Path Key Establishment for Wireless Sensor Networks" ppt

... nodeselected on a cyclical basis, producing an increased number ofnodes vulnerable to capture by an adversary. In order that any two sensor nodes may communicatesecurely, they have to share a secret. ... toselect intermediate nodes.To explain in detail the path key establishment problem,we illustrate using a small network having six sensor nodesas shown in Figure 1. Solid and dashed lines are used ... S. Xu, S. Setia, and S. Jajodia, “Establishing pairwisekeys for secure communication in ad hoc networks: a proba-bilistic approach, ” in Proceedings of the 11th IEEE InternationalConference...

Báo cáo hóa học: "Research Article On PHY and MAC Performance in Body Sensor Networks" pptx

... natural physiological states without constraining theirnormal activities. They are used to develop a smart and a ordable health care system and can be a part of diagnosticprocedure, maintenance ... propagate across the body surface.This propagation may be a combination of surface waves,creeping waves, diﬀracted waves, scattered waves, and freespace propagation depending on the antenna ... compared to a dipole or patch and it can bemore readily integrated into existing structures.2.3. Patch Antenna. A patch antenna can be integratedinto the surface of an implant. Without requiring muchadditional...

Báo cáo hóa học: " Research Article Censored Distributed Space-Time Coding for Wireless Sensor Networks" pptx

... source informationusing a T× N code matrix Φ ∈ C.Eachactiverelaytrans-mits a linear combination of the columns of the information-carrying matrix Φ. The linear combination coeﬃcients foreach ... Numerical Optimization, Springer,New York, NY, USA, 1999.[23] R. A. Adams, Single Variable Calculus, Addison-Wesley, Read-ing, Mass, USA, 1995.6 EURASIP Journal on Advances in Signal Processing0246810×102i00.20.40.60.811.21.4dN= ... (WSNs) have beengaining popularity in a wide range of military and civilianapplications such as environmental monitoring, health care,and control. A typical WSN consists of a number of geo-graphically...

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