the handbook of ad hoc wireless networks 7 ppt
the handbook of ad hoc wireless networks
... appear on the market. These technologies constitute the building blocks to construct small multi-hop ad hoc networks that extend the range of the ad hoc networks technologies over a few radio hops ... of them is eliminated by optimizing over the secondary metric (say delay), and so on. The mobility of mobile ad hoc networks adds another dimension of difficulty. Highly mobile hosts in the ad ... single-hop ad hoc wireless networks. The first part of this chapter presents the taxonomy of single-hop wireless technologies. Specifically, we introduce the concept of Body, Personal, and Local wireless...
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Báo cáo hóa học: " Research Article A Simulation Study: The Impact of Random and Realistic Mobility Models on the Performance of Bypass-AODV in Ad Hoc Wireless Networks" pdf
... multi-hop wireless ad hoc networks, ” in Ad Hoc Networking, pp. 139– 172 , Addison-Wesley, Reading, Mass, USA, 2001.[3] T. Camp, J. Boleng, and V. Davies, “A survey of mobility mod-els for ad hoc network ... connectivity probability of a wireless ad hoc network,” in Proceedings of the InternationalWorkshop on Wireless Ad- Hoc Networks, pp. 120–124, June2004.[5] F. Bai, N. Sadagopan, and A. Helmy, ... for vehicular ad- hoc networks, ” in Proceed-ings of the Mobile Networking for Vehicular Environments(MOVE ’ 07) , pp. 73 78 , May 20 07. [8] V. D. Park and M. S. Corson, “A highly adaptive distributedrouting...
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security & quality of service in ad hoc wireless networks
... see below. I address the general issue of routing inmobile ad hoc networks separately in the next section. The shared wireless environment of mobile ad hoc networks requires the use of appropriate ... quality of service in ad hoc wireless networks. Starting with a review of the basic principles of ad hoc wireless networking,coverage progresses to the vulnerabilities these networks face and the ... toincorporate some of these schemes of wireless and wire-line networks. I devoteseveral chapters of this book to address incorporation of these schemes in ad hoc networks. In the following, I...
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báo cáo hóa học: " TCP NCE: A unified solution for non-congestion events to improve the performance of TCP over wireless networks" docx
... is the TCP’ s estimation of the end-to-endRTT delay at time tn,Ln the size of the data, tn-1 the arrival time of the previous ack, and tn the arrival time of nth packet at the receiver. The ... Recover, the sender sets the size of cwnd to the value of ssthreshand then goes to CA phase. On the other hand, if the current queue length is less than the threshold value at the time of receiving ... alarger size of cwnd is needed to utilize the full band-width of the link. Therefore, the random loss has muchhigher impact on the throughput of each TCP as the propagation delay of the link increases...
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Báo cáo hóa học: " Research Article Experimental Evaluation of the Usage of Ad Hoc Networks as Stubs for Multiservice Networks" ppt
... sending the proofs to the gateway, which contain information on the path(s) of the flow. When receiving the proofs, the gatewaysends them to the authentication and accounting server toverify the ... activated in the nodes. In terms of traffic control, we evaluate the maximumachievable throughput and the influence of the number of hops in the ad hoc network between the sender and re-ceiver. The maximum ... with the aid of the MGEN tool [44].For each configuration, 5 tests were made, with 300 sec-onds runs. The presented results are the mean of the 5 tests. The incremental addition of nodes in the...
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Báo cáo hóa học: " Research Article Channel MAC Protocol for Opportunistic Communication in Ad Hoc Wireless Networks'''' doc
... networks (WLANs).Although often used in practical implementations of mobile ad hoc networks, IEEE 802.11 presents several drawbacks in the context of ad hoc networks, one of them being its poorthroughput ... quantitatively estimated the degradation of the network throughput due to fading.Figure 1 shows the degradation of network throughputversus the probability of the channel being “bad” for different8 ... pair [2], independent of the number of nodes. However, the performance of ad hoc networks with MAC protocols such as IEEE 802.11 falls short of what is predicted by these theoretical models. This...
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Báo cáo hóa học: " QoS Topology Control for Nonhomogenous Ad Hoc Wireless Networks" ppt
... In the design of ad hoc wireless networks, an important objective is to increase the lifetime of the network, which is defined as the period of time be-fore any node in the network runs out of ... carrying traffic are added into the topology be-cause they have low weights of Rij. These redundant links willcause maintenance overhead of the topology. The final step of the topology construction ... broadcast routing in static ad hoc wireless networks, ”in Proceedings of the 20th Annual Joint Conference of the IEEEComputer and Communications Societies (INFOCOM ’01),vol. 2, pp. 1162–1 171 ,...
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The Discovery of Type II Superconductors Part 7 pptx
... considering the optimisation of nuclear reaction of the projectile with the sample and the range of particles in the sample. In case of HTSC Bi-cuprates, the purpose was to investigate the knock-out of ... particular irradiation, d.p.a. is proportional to the fluence or dose of irradiation. Moreover, it depends on the energy and the nature of the projectile as well as the atomic number of the target ... Fig. 6b. The contribution of the Cu-O2 planes was considered, taking together the effects on the oxygen and the copper atoms in those sites. The results show that the contribution to the total...
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Water Pollution Control - A Guide to the Use of Water Quality Management Principles 7 ppt
... feeds into the Huangpu River and, as a result of the reduction of the pollution load in the city section of the Suzhou River by 70 per cent, there will be an important improvement in the water ... leading to bio-degradation of the volatile fractions in the pipes themselves. The assumed BOD design load of the plants were, in some cases, considered much higher than the actual BOD loading. ... planning of Shanghai. • The financing capability of the city. The integrated pollution control of Huangpu River is a large system project composed of many sub-projects. The scope of the project...
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Báo cáo toán học: " Performance of the audio signals transmission over wireless networks with the channel interleaving considerations" pot
... improves the quality of the received audio signal. It improves the amount of the throughput over the wireless link through the packet loss reduction. Keywords: wireless networks; Bluetooth; fading ... show the variation of the Cr and the MSE of the received audio signals with the channel SNR, respectively. These figures reveal that the proposed chaotic interleaver improves the quality of the ... 5.3. The mobility effects on the audio transmission performance This section is devoted for studying the effects of the mobility of the wireless ad hoc network device (Vc) on the transmitted...
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