performance comparison of ad hoc routing protocols aodv and dsr

... rộng đáng kể với mạng ns-2 giả lập để chạy mô phỏng ad hoc Trang 2 2.3 Năng động Nguồn Routing (DSR) 2.4 Ad Hoc On-Demand Distance Vector Routing (AODV)4 Trang 3 Mã 5.5 Mô phỏng 7 6 Kết quả và thảo ... thức định tuyến như động Source Routing (DSR), Ad Hoc On-Demand Distance Vector Routing (AODV), Destination sắp xếp trình tự Distance-Vector (DSDV) và thời Ordered Routing Algorithm (Tora) đã được ... (Tora) 3 Nguồn Dynamic Routing (DSR) 4 Ad Hoc On-Demand Distance Vector Routing (AODV) Trang 5Trong khi DSDV là một bảng điều khiển giao thức định tuyến, TORA, DSR, AODV, thuộc thể loại giao thức

Ngày tải lên: 21/08/2015, 16:37

... performance evaluation is of ad hoc routing protocols essential In this work, OPNET Modeler 10.5 ver-sion is used to simulate three ad hoc routing protocols, that is, DSR, AODV, and TORA We evaluated ... discovery time for DSR protocols under various loads and25show AODV performance of routing traffic sent and routing traffic received, for different loads, respectively We observe that the number of packets ... route and show almost similar performance near the end of the simulation time 4.2 Radio receiver Figure 9shows the radio receiver utilization of DSR, TORA, and AODV protocols for channel bandwidth

Ngày tải lên: 22/06/2014, 22:20

... passive and all signal measure-ments and handoff initiations are a responsibility of the BS In the second case, both the BSand the mobile terminal perform signal measurements, however, the handoff ... mance degradation Of course, there is a chance of the handoff being blocked This means thatthe new BS is not able to serve the connections of the roaming user, either for reasons ofbandwidth availability ... its radio connection with the old BS, connects to the new oneand confirms end-to-end handoff Trang 8To minimize QoS disruption during the handoff, the network can perform a ‘lossless handoff’[8]in

Ngày tải lên: 29/09/2013, 21:20

... defines two major MAC categories: random access protocols and scheduled protocols The first category represents an adequate solution for ad hoc networks and most of the works have been done using ... benefits of beamforming techniques in ad hoc networks We first devise a novel MAC paradigm for ad hoc networks when using these techniques in multipath fading environment In such networks, the use of ... terms of normalized throughput The parameter used in both simulation and numerical calcula-tion are stated in Table 2 and the results are depicted in 3.2 Modeling the Performance of Ad Hoc Networks

Ngày tải lên: 21/06/2014, 22:20

... model to take into account the e ffects of fading and shadowing by introducing random direction depen-dent interference regions (in terminology of [20]) instead of circular in-terference regions ... independent ofu1,u2, , u i −1 and v1,v2, , v i −1; and v i is independent of u1,u2, , u iandv1,v2, , v i −1(by our conventionu icomes beforev i) The expectations and variances of random variablesu ... for an analysis of the effect of mobility on throughput), ignore the route discovery process and focus solely on the data traf-fic that ad hoc networks can support On the other hand, un-der certain

Ngày tải lên: 22/06/2014, 19:20

... delivery optimized to ad hoc environments MAODV [23] and MOLSR [24] are, respectively, the multicast versions of AODV and OLSR ODMRP [25] and ADMR [26] are mul-ticast ad hoc routing proposals that ... nature of ad hoc networks, rout-ing protocols should be highly dynamic and robust Ad hoc routing protocols are often classified regarding its method of finding and maintaining routes, namely: proactive, ... or hybrid Popular solutions providing routing in ad hoc networks are AODV [1], OLSR [2], DSR [3], and DYMO [4] OLSR is a proactive protocol while AODV, DSR, and DYMO are reactive The first keeps

Ngày tải lên: 22/06/2014, 19:20

... performance degrades severely in IEEE 802.11-basedwirelessadhoc networks. We first identify two critical issues leading to the TCP performance degradation: (1) unreliable broadcast, since broadcast ... Section 3.3,and0 ≤ N rand ≤ β for normal broadcast frames, where α is a system parameter and α<β. PILOT and random backoff T rand are used to resolve collisions among competing broadcast frames. ... rectly sense the broadcast of sender S and refrain themselves from transmission. However, all of the hidden terminals lo- cated between R and 2R cannot sense the broadcast and may broadcast during

Ngày tải lên: 22/06/2014, 22:20

... applications Here are three kinds of applications of the ad hoc concept: ad hoc linking, ad hoc networkingand ad hoc association Ad hoc linking is a feature present in a number of infrastructure-based ... developments of ad hoc networks with applications and provide aroad map to the contents of the book abstrac-Development of Ad Hoc Networking An ad hoc network consists of nodes that may be mobile and have ... resourcesand services Trang 17AddressconfigurationConflict resolutionRoutingFraming Figure 1 Impact of the ad hoc mode on a protocol architecture Roadmap and Style of Presentation This book grew out of

Ngày tải lên: 04/07/2014, 06:20

... Cockcroft-Gault formula [29], NYHA functional class, and serial measurements of BNP and NT-proBNP as continuous variables Comparison of time course of BNP and NT-proBNP levels between survivors and ... patients had to present with ADHF expressed by acute dyspnea NYHA class III or IV and a BNP level of at least 500 pg/mL The diagnosis of ADHF was additionally based on typical symptoms and clinical ... the role of BNP and NT-proBNP sequential measurement as a marker of clinical improvement of patients with ADHF in response to therapy, and (c) to compare the prognostic utility of BNP and NT-proBNP

Ngày tải lên: 14/08/2014, 07:21

... Trang 1IMPLEMENTATION AND APPLICATIONSOF AD HOC CONSTRAINTS CHENG CHI KAN KENIL NATIONAL UNIVERSITY OF SINGAPORE 2008 Trang 3IMPLEMENTATION AND APPLICATIONSOF AD HOC CONSTRAINTS CHENG CHI ... as possible, taken into account the efficiency trade-offs This thesis tigates the roles of ad hoc constraints in these four issues inves-An ad hoc constraint is an arbitrary constraint with no ... rules for the game of Life 59 4.2 A8 × 8 board made to 9 × 9 by padding dead cells (shaded) A super-cell is any3 × 3 square of cells A super-row is a 3 × n (here n = 9) rectangle of cells A super-block

Ngày tải lên: 11/09/2015, 09:05

... leading to a better understanding of tumor onset and progression, opening new avenues in the field of translational oncology [4–6] Whole Exome Sequencing (WES), which targets a large fraction of ... the low quality of resulting DNA remains one of the major challenges The difficulty of extraction due to par-affin and protein-DNA interactions, together with the adverse effect of formalin fixatives, ... analysis and all spec-imens reported at least 50 % of tumor cells content DNA extraction and quality control gDNA from FF and matched FFPE tissues was extracted by QIAamp® DNA Mini Kit and GeneRead

Ngày tải lên: 20/09/2020, 17:50

... Department of Electrical and Electronic Information Engineering DANG NGUYEN CHAU M125212 TOYOHASHI UNIVERSITY OF TECHYNOLOGY Trang 2PERFORMANCE COMPARISON OF ADAPTIVE FILTERING IN TIME AND REVERBERANT ... SDR performance and SIR performance of Wiener filter in various room Fig.8.7 System performance (SIR) of model using NLMS algorithm in various rooms with 2048 – filter length Fig.8.8 System performance ... algorithm is the simpler version of the gradient search In which, the gradient of mean squared error is replaced the gradient of instantaneous squared error function The LMS adaptation method is defined

Ngày tải lên: 28/01/2021, 22:42

... Department of Electrical and Electronic Information Engineering DANG NGUYEN CHAU M125212 TOYOHASHI UNIVERSITY OF TECHYNOLOGY Trang 2PERFORMANCE COMPARISON OF ADAPTIVE FILTERING IN TIME AND REVERBERANT ... SDR performance and SIR performance of Wiener filter in various room Fig.8.7 System performance (SIR) of model using NLMS algorithm in various rooms with 2048 – filter length Fig.8.8 System performance ... algorithm is the simpler version of the gradient search In which, the gradient of mean squared error is replaced the gradient of instantaneous squared error function The LMS adaptation method is defined

Ngày tải lên: 03/09/2021, 14:03

... Isometric view of Wing tip post modifications; removal of spar box and addition of thin Al strips 113 Figure 85 Bottom view of Wing tip post modifications; removal of spar box and addition of thin ... for XFLR5 and TORNADO to experimental results 83 Table 5 High-lift device comparison of the conventional T240 and the morphing wing at Re 168000 85 Table 6 Comparison of the roll performance ... digits of their hands, hindlimbs and body, this enables high-order control of the wing Bat wing bones experience torsional loads whereas bones of other mammals’ experience bending loads The bones of

Ngày tải lên: 05/02/2023, 12:29

... and Parkhe (1993), and its development and administration followed the “total design approach” advocated by Dillman (1978) A cover letter, return stamped-envelope, and survey were addressed and ... Trang 16performance analysis made possible by the governance fit-performance stream Similar to the study reported in chapter 2, this study extends theory of exchange governance choice and performance ... setting provides a rigorous test of theory The rest of the paper is organized as follows The next section provides a brief outline of RBT and TCE and presents a set of hypotheses Rationale for testing

Ngày tải lên: 02/11/2014, 00:46

... classification of „bad‟ within a bad risk-class is 62.76%, and its ACC rate is 90.48% amongst the overall set using a cut-off point of 0.5 The overall ACC rate of training and testing samples are 93.75% and ... consists of 505 good and 94 bad credit cases To test the predictive capabilities of the scoring models, this data-set has been divided into a training set of 480 cases and a testing set of 119 ... cut-off values Sensitivity refers to those cases which are both actually bad and predicted to be bad as a proportion of total bad cases Specificity refers to cases which are both actually good and

Ngày tải lên: 26/09/2015, 12:03

... properties In addition, contributions of clouds and high concentrations of particulate matters would be a factor leading to the improper assumption of surface reflectance and selection of aerosol ... sun-sky spectral radiometer to measure the direct solar radiance at nine wave-length and the sky radiance at four wavewave-lengths using standard AERONET protocols [1] AOD at each of the nine wavelengths ... 0.184 and 0.099, respectively 6 0.556 for Terra and Aqua, respectively; and the intercepts for Terra and Aqua are 0.184 and 0.099, respectively Fig 1 Correlation plots of MODIS (Terra and Aqua)

Ngày tải lên: 11/02/2020, 15:10

... further understand the quality of life of the two treatments Abbreviations AC: Adenocarcinoma; FIGO: International Federation of Gynecology and Obstetrics; R-CT: Radio-chemotherapy; RH: Radical hysterectomy ... X, Meng Q, Zhang F Comparison of treatment outcomes between squamous cell carcinoma and adenocarcinoma of cervix after definitive radiotherapy or concurrent chemoradiotherapy Radiat Oncol 2018;13(1):249. ... stage IB1 and IIA1 patients before and after matching R-CT radio-chemotherapy, RH radical hysterectomy with postoperative standard therapy, FIGO International Federation of Gynecology and Obstetrics,

Ngày tải lên: 17/06/2020, 03:04

... of the 2015 between in-situ measurement and GPM satellite data) Figure 2a Comparison of the rainy season in 2010 between in-situ measurement and PERSIANN system) Figure 2b Comparison of ... part of the results of the project "Researching and calculating river flows for management and usage of water resources in Ca River basin based on the application of mathematical models and ... and Quy Hop, Tay Hieu (in the Northeast), and Dai Loc, Vinh; Cua Hoi, Do Diem (in the Southeast) Figure 1a Comparison of the rainfall in-situ measurement and ERSIANN system) Figure 1b Comparison

Ngày tải lên: 08/07/2020, 12:37

... networks Some of these advantages are: commu-• Use of ad-hoc networks can increase mobility and flexibility, as ad-hoc networks can be brought up and torn down in a very short time • Ad-hoc networks ... separated and optimized independent of theother layers To the list of research areas we can certainly add searching for ad-a suitad-able position determinad-ation system ad-and position upgrad-ade ... The radio technology used for this purpose can be any of a widerange of systems and standards Details of such radio communication tech-nologies used in ad-hoc networks are beyond the scope of this

Ngày tải lên: 05/09/2020, 11:39