disadvantages of wireless sensor networks ppt

Báo cáo hóa học: " Research Article Impact of Radio Link Unreliability on the Connectivity of Wireless Sensor Networks" pptx

Danh mục: Báo cáo khoa học

Báo cáo hóa học: " A Survey of Application Distribution in Wireless Sensor Networks" ppt

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FED: FUZZY EVENT DETECTION MODEL FOR WIRELESS SENSOR NETWORKS pptx

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... algorithm for wireless sensor networks, ” International Journal of Wireless & Mobile Networks (IJWMN), vol.2, no.3, August 2010. International Journal of Wireless & Mobile Networks (IJWMN) ... nature of wireless sensor networks, migration phase of the algorithm has the duty of balancingthe capabilities of the cluster in case where some sensors fail. That is, whenever a scare sensor ... random. We use three types of sensors(SensorType1, SensorType2 and SensorType3) with equal quantities. In each experiment a sensor field is generatedwith predefined number of nodes that has been...

On the Lifetime of Wireless Sensor Networks

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... 2002b. Wireless sensor networks: A survey. Elsevier Comput. Netw. 38, 393–422.ARAMPATZIS, T., LYGEROS,J.,AND MANESIS, S. 2005. A survey of applications of wireless sensorsand wireless sensor networks. ... in wireless sensor networks. In Proceedings of the 24th IEEE Conference on Computer Communications(INFOCOM).CARDEI,M.AND WU, J. 2004. Coverage in wireless sensor networks. In Handbook of Sensor ... On the Lifetime of Wireless Sensor Networks ã5:39SORO,S.AND HEINZELMAN, W. B. 2005. Prolonging the lifetime of wireless sensor networks viaunequal clustering. In Proceedings of the 19th IEEE...

Báo cáo hóa học: " An analytical model for the intercell interference power in the downlink of wireless cellular networks" ppt

Danh mục: Hóa học - Dầu khí

... D.)LetuslastnoticethatthechoiceforvaluesofM andJis a trad e-off between different aspects: cardinality of the resulting typical set (i.e., tractable number of points),number of simulation runs and accuracy of the histo-gram. ... generate sequences of ‘rando m’numbers belonging to a fixed set of values. In order totake into account the ignorance of the contribution of the highest interference gains of the N - M non-com-pelled ... apractical tool for the assessment and simulation of wireless cellular networks when the effect of shadow-ing is to be considered.The main contributions of this paper are as follows:ã In the special...

Báo cáo hóa học: " Research Article Tree Based Protocol for Key Management in Wireless Sensor Networks" pptx

Danh mục: Hóa học - Dầu khí

... polyno-mial of degree λ) to each sensor. So, each sensor node storesa polynomial with λ +1coeﬃcients and every pair of sensor nodes can establish a key using the property of symmetry of polynomials. ... convergence of technological advances in microelectron-ics and wireless communications has enabled the emergence of a promising area: Wireless Sensors Networks (WSNs).WSNs come from the combination of ... the father of the sensor in the ﬁnal spanningtree. The base station is the root of the tree, soFatherBSis set to null.(ii) Leveli: the level of the sensor in the tree. The level of the root...

Báo cáo hóa học: " Research Article Random Field Estimation with Delay-Constrained and Delay-Tolerant Wireless Sensor Networks" pptx

Danh mục: Hóa học - Dầu khí

... “Distributedsampling for dense sensor networks: a bit-conservation prin-ciple,” in Proceedings of the 2nd International Workshop onInformation Processing in Sensor Networks, vol. 2634 of LectureNotes in ... in wireless sensor networks, ”IEEE/ACM Transactions on Networking, vol. 14, no. 2, pp. 316–329, 2006.[3] S. C. Draper and G. W. Wornell, “Side information awarecoding strategies for sensor networks, ” ... Ministry of Science and Innova-tion (FPU grant AP2007-01654).References[1] I. F. Akyildiz, W. Su, Y. Sankarasubramaniam, and E. Cayirci, Wireless sensor networks: a survey,” Computer Networks, ...

Báo cáo hóa học: "Research Article A High-Accuracy Nonintrusive Networking Testbed for Wireless Sensor Networks" pptx

Danh mục: Hóa học - Dầu khí

... nodes. Sensor nodes are the basic cells of the wireless sensor networks. Therefore it is fundamental to learn the architec-ture of sensor nodes. At present there exist a large number of kinds of sensor ... in such networks due to the constrained resource, thedynamics of wireless communications, the frequent failures of sensor nodes and the variety of the applications for wireless sensor networks. Some ... over the wireless links of the wireless sensor networkitself. The other is to transfer the test data over additional networks. For the former category, the bandwidth of the wireless sensor networks...

Báo cáo hóa học: "Research Article Low-Complexity One-Dimensional Edge Detection in Wireless Sensor Networks" ppt

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... values of ηo), regardless of the sensor SNR.On the other hand, for low values of the communication00510D1520p= 0p= 0.5p= 0.20.2SNR sensor = −10 dBSNR sensor = 0dBSNR sensor = ... leakage: some of the sensors (namely, sensorss2, s3, s5,ands6in Figure 1(b)) thus detect the presence of the gas (namely, sensors s2, s3, s5,ands6) whereas theremaining sensors (namely, ... based, regardless of the quan-tization strategy, on the assumption of knowledge of thenumber of edges Nbsat the AP. However, in the scenario of interest, for example, monitoring of a gas leakage,...

Báo cáo hóa học: " Research Article Distributed KDC-Based Random Pairwise Key Establishment in Wireless Sensor Networks" pptx

Danh mục: Hóa học - Dầu khí

... Harn, “Location-aware key management scheme for wireless sensor networks, ”in Proceedings of the ACM Workshop on Security of Ad Hoc and Sensor Networks (SASN ’04), pp. 29–42, October 2004.[17] ... “Location-based pair-wise key establish-ments for static sensor networks, ” in Proceedings of the 1stACM Workshop on Security of Ad Hoc and Sensor networks, pp.72–82, October 2003.[16] D. Huang, M. ... sensor nodes in order to oﬀer dataconﬁdentiality and data integrity.Large-scale WSNs consist of a large number of sensor nodes [2, 3]. Usually, sensor nodes have limited capacityin terms of...

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

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... 102–114, 2002.[2] C. Karlof and D. Wagner, “Secure routing in wireless sensor networks: attacks and countermeasures,” in Proceedings of the1st IEEE International Workshop on Sensor Network Protocolsand ... multipathrouting for mobile ad hoc networks, ” in Proceedings of the1st ACM Inter n ational Workshop on Performance Evaluation of Wireless Ad Hoc, Sensor, and Ubiquitous Networks (PE-WASUN ’04), pp. ... network. The value of tmay be set to reﬂect the density of the node withinthe neighborhood. For dense networks, the value of t should be small; while for sparse networks, a largevalue of t may be...

Báo cáo hóa học: " Research Article An Efﬁcient Multibit Aggregation Scheme for Multihop Wireless Sensor Networks" pptx

Danh mục: Hóa học - Dầu khí

... (MMSE)estimate of the number of descendants of that child decidingin the favor of event. In [6], it is assumed that every sensor node has knowledge of the number of descendantsofitseachchild.In[7], ... for wireless microsensor networks, ” IEEE Transactions on Wireless Com-munications, vol. 1, no. 4, pp. 660–670, 2002.[20] G. Ferrari and M. Martal´o, “Extending the lifetime of sensor networks ... properlycited.1. INTRODUCTION Wireless sensor network (WSN) [1] is a network formed by alarge number of sensor nodes deployed in the area of interest.These sensor nodes can sense, process,...

Báo cáo hóa học: " Research Article Dynamic Session-Key Generation for Wireless Sensor Networks" ppt

Danh mục: Hóa học - Dầu khí

... 2008Recommended by Jong Hyuk ParkRecently, wireless sensor networks have been used extensively in diﬀerent domains. For example, if the wireless sensor node of a wireless sensor network is distributed in ... node.Therefore, it is necessary to make use of secure transmissionon wireless sensor networks. However, there are obviousrestrictions on the resources of wireless sensor networks. The restrictions on the ... 3.Step 1. When a new sensor node is joined to the wireless sensor networks, the sensor node make use of Ksito encryptthe preset parameters ajand Kmsgwith the IDsj of the sensor node; a complete...