performance comparison of multihop wireless mobile adhoc routing protocols

... plotsthePDRofeachflow against its average number of hops for the four routing metrics. 7.6. Cost of Data Packet Delivery. Finally, we study the influence of each routing metric on the cost of data ... the main characteristics of routing metrics used in low-power wireless networks. Routing metric Properties of the metric Hop count Awareness of link quality Quality of all links is distinguished Link ... Many routing protocols that are currently used for this application space are descendants of the Ad hoc On-demand Distance Vector (AODV) routing protocol [10]. Examples of these are the mesh routing...

Ngày tải lên: 21/06/2014, 11:20

Ngày tải lên: 21/06/2014, 23:20

... choose the first sentences of each 1 We did not use any machine learning techniques to boost performance of the algorithms we tested. Therefore performance of the algorithms tested here ... weight of sentence i in document j, n si is the number of words in sentence i, k is the kth word in sentence i, tf jk is the frequency of word k in document j, n d is the number of documents ... definition of discourse segments because we used the discourse trees from Carlson et al. (2002)’s database of coherence- annotated texts. 3.1.2 Kinds of coherence relations We assume a set of coherence...

Ngày tải lên: 17/03/2014, 06:20

... conferences 0 10 20 30 40 50 60 70 80 ICADL 1998 ICADL 1999 ICADL 2000 ICADL 2001 ICADL 2002 ICADL 2003 # of Papers # of Papers from Asia Figure 1. Number of papers accepted in ICADL ICADL 1998 ICADL 1999 ICADL 2000 ICADL 2001 ICADL 2002 # of Papers 23 18 37 34 54 # of Papers ... 14 26 25+ 31+ # of Countries 7 7 12 12 20 # of Countries from Asi a 6 5 7 9 12 # of Institutions 17+ 14+ 31+ 33+ 55+ # of Institutions from Asia 12+ 10+ 21+ 22+ 23+ # of Academic Departments/Discipline s ... coherent view of the collection of data and a sensible set of services, there is a need for remote access mechanisms for digital library services. The simplest of these is the concept of remote searching,...

Ngày tải lên: 01/06/2014, 00:46

... might terminate before reaching the end of the network. 2.2 Performance metrics of interest In this work, the performance of probabilistic multihop broadcast protocols will be investigated using ... conditions— this is the very idea of IF. The shape of p, as a function of d, is shown in Figure 5, for different values of c and ρ s . It can be observed that the PAF of SIF is monotonically increasing ... the average global performance metrics (namely, RE, D, and TE), on the basis of the average local performance metrics of a generic TD. We recall that, thanks to the assumptions of the deterministic...

Ngày tải lên: 20/06/2014, 20:20

... TD Dyer, RV Boppana, A comparison of TCP performance over three routing protocols for mobile ad hoc networks, in Proceedings of the 2001 ACM International Symposium on Mobile Ad hoc Networking ... in wireless ad hoc networks TCP was designed for wired networks without consider- ing the complexity of wireless networks. With the advent of wireless technology TCP was also employed in wireless ... 2002 Mobile TCP-DOOR T Y - Y Y - - - Y Y - DSR Out of order packet - 2002 Mobile Backup path routing N Y - - Y - - - Y - - SMR - - 2003 Mobile COPAS N Y Y Y Y - - - Y - - DSR Weighted. Ave Backoff -...

Ngày tải lên: 21/06/2014, 00:20

... receiver node of any link in the case of the tandem multihop wireless network (Figure 4)is smaller on average to that of the multihop wireless network (Figure 6) (Note that any receiver node of the ... (1), the scaling of G by a factor of 1/κ (or 1/θ η ) is equivalent to the scaling of node distance matrix D by a factor of θ and the scaling of self-interference gains g by a factor of 1/θ η . Therefore, ... results further shows that the topology of the network has a substantial influence on the performance gains. For example, in the case of tandem multihop wireless networks the benefits due to self- interference...

Ngày tải lên: 21/06/2014, 11:20

... data planes using out -of- band signaling. Designing protocols for VDTNs poses a number of technical challenges due to the nature of vehicular environments and to a variety of factors including ... 21 The performance metrics considered in this study are the bundle delivery probability (measured as the relation of the number of unique delivered bundles to the number of bundles generated), ... time, and the historic of nodes that have stored-carried-and-forwarded each delivered bundle. Figure 5 presents an illustration of the software modules for terminal and mobile nodes, respectively....

Ngày tải lên: 21/06/2014, 17:20

Ngày tải lên: 21/06/2014, 20:20

Ngày tải lên: 22/06/2014, 19:20

Ngày tải lên: 22/06/2014, 22:20

Ngày tải lên: 27/06/2014, 13:20

Ngày tải lên: 12/08/2014, 01:22

Ngày tải lên: 13/08/2014, 15:21

Ngày tải lên: 13/08/2014, 18:22

... Introduction 4 Wireless devices range : ã Mobile : Cellular (2G,3G,so called 4G), Private Mobile Radio (Analogue, Digital), Mobile mesh, Emerging technologies including Cognitive Radio and Softre ... 25/09/08) 2 Fundamental aspects on Wireless and Mobile Communications (Cf.See books of Papadimitriou, Molisch, Schiller,…) Part III – Basic cases on Wireless and Mobile Systems (12t) (Mar 30/09 ... broadcasting Mobile broadcastingto handhelds. Introduction 5 Figure 1.2. Some Spectrum Allocations in the UHF Band (January 2008) Wireless & Mobile Systems Goals and Content of this Course...

Ngày tải lên: 17/09/2012, 10:44

Ngày tải lên: 17/09/2012, 10:44

... School of Pharmacy, University of Maryland, Baltimore, Maryland, USA, 2 Department of Psychiatry, School of Medicine, University of Maryland, Baltimore, Maryland, USA, 3 Departments of Psychiatry ... (110/1908) of US medicated youth, 1.9% (18/937) of medicated Dutch youth and 4.6% (62/1358) of medi- cated German youth. Discussion The major finding of this cross-national prevalence study of psychotropic ... use of common surgical procedures: an inter- national comparison of New England, England, and Norway. N Engl J Med 1982, 307:1310-1314. 13. Sheehan KH: Caesarean section for dystocia: a comparison...

Ngày tải lên: 25/10/2012, 10:06

... Evaluation of Brucellacapt for the diagnosis of human brucellosis. Journal of Infection 2004; 49: 102–108. 3. Clavijo E, Diaz R, Anguita A, Garcia A, Pinedo A, Smith HL. Comparison of a Dipstick ... T. Comparison of Coombs and immunocapture-agglutination tests in the diagnosis of brucellosis. Chin Med J 2005;118(3):252-4. 6. Prado A, Gutierrez P, Duenas A. Serological follow-up of bru- cella ... Gültekin M, Mamıkoğlu L. Comparison of serologic tests which are used in the diagnosis of Brucellosis. Mikrobiol Bült 2005;39:291-9. 12. Alışkan H. Diagnostic value of Culture and serological...

Ngày tải lên: 25/10/2012, 10:56