An Investigation of the Impact of Signal Strength on Wi-Fi Link ...

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1. The Ad-Hoc Mode Measurement in <strong>the</strong> Meeting Room Data File Size Distance: 1m RSS: -45 dBm (MB) Time Throughput (second) (Mbps) - 112 - Distance: 2m RSS: -41dBm Time (second) Throughput (Mbps) Distance: 3m RSS: -47 dBm Time (second) Throughput (Mbps) 10.9 16.5 5.319 15.1 5.812 16.4 5.352 21.9 32.1 5.468 30.7 5.718 31.8 5.520 32.9 48.2 5.463 46.5 5.662 46.8 5.626 43.8 65 5.401 62.7 5.599 63.1 5.564 54.8 80.5 5.451 77.8 5.640 78.2 5.612 65.8 96.7 5.446 93.5 5.632 95.2 5.531 76.8 114.2 5.380 110.8 5.545 111.3 5.520 87.8 128.8 5.451 126.9 5.533 127.2 5.520 98.7 146 5.410 143.6 5.501 144.5 5.466 109.7 161.4 5.438 156.8 5.597 158.6 5.534 120.7 175.7 5.495 171.3 5.636 173.9 5.552 131.6 191 5.514 186.1 5.659 190.2 5.537 142.6 209.2 5.454 203.5 5.607 204.7 5.574 153.6 226.4 5.427 218.9 5.613 220.6 5.570 164.6 240.7 5.469 232.2 5.670 237.3 5.548 274 411.3 5.335 386.9 5.671 390.2 5.623 Audio: 263 385 5.480 374.1 5.640 375.1 5.625 Video: 256 375.4 5.467 362.1 5.668 364 5.638 Throughput 5.437 5.634 5.551 Average Throughput 5.540 Table A.1: Numerical results for ad-hoc mode.
2. AP Mode Measurement in <strong>the</strong> Meeting Room Distance: 1m Distance: 2m File Size / Time / RSS: -47 dBm RSS: -43 dBm Throughput Time Throughput Time Throughput (second) (Mbps) (second) (Mbps) Data 109 MB 274 MB 107.7 271.6 8.149 8.079 83.9 212.9 10.461 10.306 Audio: 263 MB 258.9 8.150 202.4 10.425 Video: 256MB 248.7 8.252 200.5 10.236 Average Throughput 8.157 10.357 Table A.2: Numerical results for AP mode. 3. WDS with AP Mode Measurement in <strong>the</strong> Meeting Room File Size / Time / Throughput Data - 113 - Distance: 2m, RSS: -43 dBm Time (second) Throughput (Mbps) 109 MB 151.5 5.793 274 MB 382.7 5.733 Audio: 263 MB 369.1 5.717 Video: 256MB 355.2 5.778 Average Throughput 5.755 Table A.3: Numerical results for WDS with AP mode. 4. AP Mode with E<strong>the</strong>rnet Measurement in <strong>the</strong> Meeting Room File Size / Time / Throughput Data Distance: 2Meters, RSS: -43 dBm Time (second) Throughput (Mbps) 109 MB 78.7 11.152 274 MB 182.3 12.036 Audio: 263 MB 168.7 12.507 Video: 256MB 174.6 11.755 Average Throughput 11.863 Table A.4: Numerical results for AP Mode with E<strong>the</strong>rnet connection.
Page 1 and 2:
An Investi
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2.3.5 Signal <stro
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Attestation of Aut
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Abstract Wireless local area networ
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List of Abbreviati
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List of Figures Fi
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List of Tables Tab
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Chapter 1 Introduction There has be
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WLAN performance evaluation and ana
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Chapter 2 Background and Related Wo
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The IEEE 802.11 networks have two o
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The coverage of a
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2.2.1 Physical Layer Figure 2.8 sho
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throughput significantly at higher
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DCF is designed to provide “best-
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Figure 2.11: Backof</strong
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modulation in [37]. According to si
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Figure 2.12: Net throughput <strong
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As highlighted in [46, 47], distanc
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2.3.2 Base Station Placement <stron
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gained an insight that this would m
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proposed to improve WLAN performanc
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specifications of
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dynamic and complicated. As argued
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In addition, we surveyed and review
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4.1 Performance Metrics A stopwatch
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Model: DWL-G132 Specification: Sta
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Figure 4.1: WY building layout. - 4
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Figure 4.2 shows wireless configura
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4.4.2 Wireless Adapter Configuratio
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4.4.3 AP Operation Mode Two APs (D-
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meeting room with different distanc
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Scenario 4 In figure 4.12, two APs
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“(H-3.5m)F-H” is the</s
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Figure 4.16: Phase 2 measurement: A
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performed the prop
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The receiver sensitivity is an impo
Page 75 and 76: In table 5.1, the
Page 77 and 78: Ethernet connectio
Page 79 and 80: sufficient signal coverage and thro
Page 81 and 82: throughput decreases along with low
Page 83 and 84: In table 5.1, when RSS is larger th
Page 85 and 86: (for example, measurement point “
Page 87 and 88: AP at Position “R” Figure 5.13
Page 89 and 90: The measurement results indicated t
Page 91 and 92: 5.2.2 Throughput An</strong
Page 93 and 94: impact on RSS and throughput. Resul
Page 95 and 96: The throughput of
Page 97 and 98: The RSS of “WDS
Page 99 and 100: The average throughput of</
Page 101 and 102: The average data size of</s
Page 103 and 104: 5.6.1 SOHO Environment Due to <stro
Page 105 and 106: The following notes are needed to b
Page 107 and 108: when APs were placed at positions
Page 109 and 110: Real and accurate results for AP pl
Page 111 and 112: Chapter 7 Summary and Conclusions W
Page 113 and 114: planning. Propagation measurement (
Page 115 and 116: deployment. Many WLANs are deployed
Page 117 and 118: placement in indoor wireless system
Page 119 and 120: Communications, vol. 2, no. 5, pp.
Page 121 and 122: [56] J. K. L. Wong, M. J. Neve, and
Page 123 and 124: eceived signal strength of<
Page 125: Appendix A Preliminary Experimental
Page 129 and 130: 7. The Ad-Hoc Mode Measurement on <
Page 131 and 132: Appendix B Phase 1 Experimental Res
Page 133 and 134: (P-1.5m)O-P 32.78 -86 193.6 0.453 N
Page 135 and 136: 3. Access Point at Position “E-3M
Page 137 and 138: (C-5m)C-D 21.63 -83 46.8 1.875 NLOS
Page 139 and 140: J 9.00 -44 8.2 10.703 LOS (J-1.5m)J
Page 141 and 142: 7. Access Point at Position “H”
Page 143 and 144: Figure B.2: Throughput map for AP a
Page 145 and 146: 60 40 20 0 -20 -40 -60 -80 -100 Acc
Page 147 and 148: (N-3m)N-O 15.00 -72 15.6 5.626 NLOS
Page 149 and 150: (C-3m)C-D 14.32 -74 13.6 6.453 NLOS
Page 151 and 152: Figure B.8: Throughput map for AP a
Page 153 and 154: 60 40 20 0 -20 -40 -60 -80 -100 Acc
Page 155 and 156: AP at A RX Position Left-Hand Area
Page 157 and 158: AP at L RX Position Left-Hand Area
Page 159 and 160: Appendix D Phase 3 Experimental Res
Page 161 and 162: TX at 2M from E-3M Data File: 153.6
Page 163 and 164: IEEE 802.11 b/g Access Point DWL-21
Page 165 and 166: Standards • IEEE 802.11g • IEEE
Page 167 and 168: 1 Maximum wireless signal rate deri
Page 169 and 170: Wireless 108G Standards • 802.11b
Page 171 and 172: Wireless 108G Add 802.11g Wireless
Page 173: 2.4GHz Omni-Directional 7dBi Indoor
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An Investigation of the Impact of Signal Strength on Wi-Fi Link ...

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