ad hoc wireless networks architectures and protocols chapter 7 ppt

... 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 ... 2005-16. References [1]C.E.PerkinsandE.M.Royer,“Theadhocon-demand distance vector protocol,” in Ad Hoc Networking, pp. 173 –219, Addison-Wesley, Reading, Mass, USA, 2001. [2]D.B.Johnson,D.A.Maltz,andJ.Broch,“DSR:the dynamic ... connectivity probability of a wireless ad hoc network,” in Proceedings of the International Workshop on Wireless Ad- Hoc Networks, pp. 120–124, June 2004. [5] F. Bai, N. Sadagopan, and A. Helmy, “Important:...

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Ngày tải lên: 14/08/2014, 13:20

Ngày tải lên: 14/08/2014, 13:20

... routing in ad hoc networks 118 6.5 Conclusion and further reading 126 6.6 References 1 27 7 Secure routing 129 7. 1 Security aware routing 129 7. 2 Secure distance-vector routing protocols 133 7. 3 Mitigating ... Introduction SECURITY AND QUALITY OF SERVICE IN AD HOC WIRELESS NETWORKS Ensuring secure transmission and good quality of service (QoS) are key commercial concerns in ad hoc wireless networks as their ... an ad hoc network, as we shall see below. I address the general issue of routing in mobile ad hoc networks separately in the next section. The shared wireless environment of mobile ad hoc networks...

Ngày tải lên: 25/03/2014, 12:07

... Personal, and Local Ad Hoc Wireless Networks M arco Conti 2 M ulticasting Techniques in Mobile Ad Hoc Networks X iao Chen and Jie Wu 3 Qualit y of Service in Mobile Ad Hoc Networks ... switches, and servers). Such systems are sometimes referred to as mobile ad hoc networks (MANETs) [33] or as infrastructure-less wireless networks. 1.2 Mobile Ad Hoc Networks A Mobile Ad hoc ... D.C. Edited by Mohammad Ilyas Florida Atlantic University Boca Raton, Florida THE HANDBOOK OF AD HOC WIRELESS NETWORKS © 2003 by CRC Press LLC [ 37] NFS Wireless Information Technology and Networks Program...

Ngày tải lên: 03/06/2014, 01:08

... of Wireless Ad Hoc, Sensor, and Ubiquitous Networks (PE-WASUN ’04), pp. 1 7, Venezia, Italy, October 2004. [39] X. Wang and K. Kar, “Throughput modelling and fairness issues in CSMA/CA based ad- hoc ... .9) 1 0. 17 0.15 0.14 2 0.083 0 0.08 3 0.083 0.15 0.08 4 0.083 0 0. 07 5 0. 17 0.15 0.14 to improve the performance of ad hoc networks. In this paper, we model and simulate Channel MAC and show that ... of mobile ad hoc networks, IEEE 802.11 presents several drawbacks in the context of ad hoc networks, one of them being its poor throughput performance. Gupta and Kumar introduced a random network...

Ngày tải lên: 21/06/2014, 22:20

... net- works, ad hoc networks, sensor networks, and algorithm design and analysis. Xiaohua Jia received the B.S. (1984) and M.Eng. (19 87) degrees from the University of Science and Technology of China, and ... problems for ad hoc networks, ” in Proceedings of the 3rd ACM Interna- tional Symposium on Mobile Ad Hoc Networking and Comput- ing (MobiHoc ’02), pp. 123–134, Lausanne, Switzerland, June 2002. [8] ... EURASIP Journal on Wireless Communications and Networking [3] C. Lin and J. S. Liu, “QoS routing in ad hoc wireless networks, ” IEEE Journal on Selected Areas in Communications, vol. 17, no. 8, pp....

Ngày tải lên: 22/06/2014, 22:20

... vendors who adhere to the standards and guidelines of this model can supply Ethernet-compatible devices, alternative Ethernet channels, higher- performance Ethernet networks and bridging protocols ... discrepancies between these three protocols. Yet the functions and processes outlined in the OSI model were already in practice when Ethernet or SS7 was developed. In fact, SS7 networks use point-to-point ... packet-switched network standard; – Synchronous Data Link Control (SDLC) is not a standard, but is in widespread use. There is practically no difference between HDLC and ADCCP. Both LAP-B and SDLC are subsets...

Ngày tải lên: 09/08/2014, 06:23

... D 1 438 277 f7 ff8422c8 73 51c0e7 3e0b9530 2 3 278 94f2 438 277 f7 99d3105c 73 51c0e7 3 474 b1fd6 3 278 94f2 67ffbcff 99d3105c 4 c77d14d5 474 b1fd6 4fc7085f 67ffbcff 5 08ddf156 c77d14d5 bed49d1e 4fc7085f 6 ... D 0 35241302 7e406224 bdac9b8a ba3 376 71 1 7e406224 bf73145b ba3 376 71 ae7fec22 2 bf73145b 8223f9cc ae7fec22 d96ddcb2 3 8223f9cc 823d1be2 d96ddcb2 8ad7 86e7 4 823d1be2 30fa9e1e 8ad7 86e7 3439983d ... 362f2508 67cccf55 4 ace3d838 5f84483d 5 6ad3 072 0 d 771 80e6 6 3cc 672 3c accd0d34 7 c2 177 344 9954851d 8 436ee2fe f 770 2 871 9 fac6db42 91c5af63 10 6a1803 97 f63131f5 11 e07e082e 816fc2b3 12 ac13c0f7 52892b5b Ciphertext...

Ngày tải lên: 09/08/2014, 06:23

... that: m c d (mod n) 1 570 1019 (mod 33 37) m = (1 570 ) 512 ì (1 570 ) 256 ì (1 570 ) 128 ì (1 570 ) 64 ì (1 570 ) 32 ì (1 570 ) 16 ì (1 570 ) 8 ì (1 570 ) 2 ì (1 570 ) = 3925000 ( mod 33 37) 688 Thus, the message ... p = 47 and q = 71 , then compute n = pq = 47 71 = 33 37 (n) = (p 1)(q 1) = 46 ì 70 = 3220 Choose the encryption key e = 79 randomly such that gcd (e, φ(n)) = gcd (79 , 3220) = 1, i.e. e and φ(n) ... 9 7 (mod 23) ≡ 4 Using the MD5 algorithm, compute the message digest: h ≡ H(m||x) (mod q) ≡ H(135||4)( mod 11) h ≡ af 473 271 1661056eadbf 79 8ba191 272 a( hexadecimal) ≡ 232984 575 41950 475 8889249 578 349365 372 714...

Ngày tải lên: 09/08/2014, 06:23

Ngày tải lên: 09/08/2014, 06:23

... some things he gourd; I took a dipper and a tin cup, and my old saw and two blankets, and the skillet and the coffee-pot. I took fish-lines and matches and other things - - everything that was ... ferry now. I rose up, and there was Jackson's Island, about two mile and a half down stream, heavy timbered and standing up out of the middle of the river, big and dark and solid, like a steamboat ... about; I had to part the willow branches to get in; and when I made fast nobody could a seen the canoe from the outside. I went up and set down on a log at the head of the island, and looked...

Ngày tải lên: 15/12/2013, 09:15

... they liked, and had some difficulty in keeping their feet; but hope gave them strength, for it was not at random that they made their way along the shore. They had no doubt that Neb had found ... they loads, while the sand raised by the wind added as it were mineral dust to that which was liquid, and rendered the united attack insupportable. Between the river's mouth and the end ... hillocks and even of hills, very irregularly distributed. They resembled a Switzerland modeled in sand, and only an amazing instinct could have possibly returned? He tossed about on his sandy...

Ngày tải lên: 01/07/2014, 22:20

... in the Indian peninsula at Goa, Bombay, and Madras, and especially in that island which in olden times, as is asserted, was the terrestrial paradise, and which is called Ceylon, oh, what glory! ... under the table for the bulb; "your paper shall be read, indeed it shall." The Black Tulip ALEXANDRE DUMAS CHAPTER 7 7. The Happy Man makes Acquaintance with Misfortune Cornelius ... curiosity and feasting his eyes on the present which he had received. But, on the contrary, Cornelius had received the parcel from the hands of his godfather with every mark of respect, and put...

Ngày tải lên: 02/07/2014, 14:20

... Return 113 FIGURE 7. 7 Step 1 in using the tornado chart tool. FIGURE 7. 8 Step 2 in using the tornado chart tool. 122 FINANCIAL MODELING WITH CRYSTAL BALL AND EXCEL FIGURE 7. 17 Model in LifetimeValueModel.xls ... cells B12 and B13 in Figure 7. 14 show values of $3.43 and 15%, respectively, which differ by more than just sampling error from the means of $6.02 and 20% shown in Figures 7. 15 and 7. 16. This ... Net Present Value and Internal Rate of Return 123 normally distributed random variables with means and standard deviations given in columns F and G. The values in cells I9:I18 and I22:I31 are the...

Ngày tải lên: 05/07/2014, 18:20

... constant monitoring. 7. 7.2 Relativity of compressive strengths The data are abstracted from Laing R+D and factory research, with interpolation and extrapolation, and are shown in Table 7. 1. It is assumed ... all that the designer needs to know. 7. 6 TESTING AND INSTRUMENTATION The relation between compressive and flexural strengths has been discussed in Section 7. 3 and, although the flexural strength ... scouring and rain and only activates and retards when it comes into contact with the lime from the cement. Retarders should be those specifically tailor-made for hot concrete work. 7. 3 CONCRETING...

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