a study on the spectrum efficient multi-hop wireless network

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Figure 3.9: Example of Convergence time in the simulation 3.8 Simulation scenarios and results Figure 3.10 illustrates a diagram of the scope of this chapter. Two ad-hoc network arrangements are simulated in my research. The first setup was implemented to evaluate the effect of ART value, station’s speed and number of stations in a mobile ad-hoc network. The second arrangement evaluates the effect of number of hops on PDR and on the end-to-end delay in a wireless multi-hop Ad-hoc network. The main difference from the first arrangement is that the stations fixed. The results from these simulations are important for proposing solution to the throughput degradation problem in Ad-hoc mobile networks. 29
Simulation Mobile Ad-hoc Network, Using the 500x500 Map Fixed 5 hops Adhoc Network First Scenario ART vs. PDR Second Scenario Speed vs. PDR Third Scenario Number of hops vs. delay Forth Scenario Number of hops vs. PDR Figure 3.10: Simulation scenarios 3.8.1 First Scenario In this scenario, the ART parameter was changed from 0 to 5 seconds for different movement speeds in a 50 nodes network. Figure 3.11: Active Route timeout vs. PDR Figure 3.11 shows that for low values of ART, the PDR will have higher values when moving. At ART 0 sec, the nodes will not keep the route states after it has been used, which will cause the node to repeat the route discovery process after each use of the 30
Page 1: A STUDY ON THE SPECTRUM EFFICIENT M
Page 4 and 5: Copyright @ 2009 by WADHAH HAFIDH A
Page 6 and 7: 、上記条件下で、4 m/s
Page 8 and 9: The WMN experiments showed that the
Page 10 and 11: Table of Contents Abstract in Japan
Page 12 and 13: List of Figures Figure 1.1: Infrast
Page 14 and 15: List of Tables Table 2.1: Compariso
Page 16 and 17: CHAPTER 1 Introduction 1.1 IEEE 802
Page 18 and 19: The performance of a random media a
Page 20 and 21: 1.4 Interference problem Interferen
Page 22 and 23: On the other hand, the backbone net
Page 24 and 25: CHAPTER 2 Mobile Ad-hoc Network 2.1
Page 26 and 27: Route Request AODV Intermediate nod
Page 28 and 29: Request (RREQ) [4] in order to iden
Page 30 and 31: DATA Motion Figure 2.4: Higher mobi
Page 32 and 33: CHAPTER 3 Packet Delivery Rate (PDR
Page 34 and 35: Table 3.1: Simulation Parameters Pa
Page 36 and 37: oute stat hold time parameter in th
Page 38 and 39: speed values due to the ability of
Page 40 and 41: Figure 3.7:Coverage area and moveme
Page 42 and 43: Figure 3.8: Simulated Ad-hoc mobile
Page 46 and 47: oute. This caused the 10m/s speed t
Page 48 and 49: Figure 3.14: Number of users vs. Me
Page 50 and 51: Figure 3.16: Simulated Ad-hoc mobil
Page 52 and 53: 3.9 Chapter summary Four simulation
Page 54 and 55: suppressing channel interference is
Page 56 and 57: The two radios provide the ability
Page 58 and 59: Figure 4.4: Interference in Multi-r
Page 60 and 61: Figure 4.6: Phase Shift and cancel
Page 62 and 63: As mentioned before, it was shown i
Page 64 and 65: Basically, the experiments are cate
Page 66 and 67: Figure 5.2: AirMagnet Surveyor inte
Page 68 and 69: The directional coupler is a passiv
Page 70 and 71: Figure 5.7: Throughput vs. SIR (Int
Page 72 and 73: Figure 5.10: Three hop WMN with two
Page 74 and 75: Table 5.2:Throughput of Mutli-hop W
Page 76 and 77: PathLoss ( dB) = 40 + [35log10 D( m
Page 78 and 79: Figure 5.17: Actual Interference ca
Page 80 and 81: Figure 5.20: Attenuation value vs.
Page 82 and 83: Figure 5.22 illustrates the S 21 pa
Page 84 and 85: link. The experimental results show
Page 86 and 87: Scenario A.1 This scenario simulate
Page 88 and 89: Destination address Table Table A.1
Page 90 and 91: Figure B.2: Attenuation value vs. t
Page 92 and 93: [10] S Gowrishankar, T G Basavaraju
Page 94 and 95:
[32] Jing Zhu and Roy, S., “802.1
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