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

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R 17.49 -77 31 2.831 NLOS (R-1.5m)S-R 16.22 -78 30.9 2.840 NLOS (R-2.5m)R-S 15.40 -77 26.1 3.363 NLOS (R-3.5m)R-S 14.60 -73 15.4 5.699 NLOS 60 40 20 0 -20 -40 -60 -80 -100 S 13.83 -68 10.3 8.521 NLOS Table B.10: Numerical results for AP at position “L”. Access Point at position "L" : Distance/RSSI/Throughput A B C D E G F H I M J K N O P Q R S RX Position Figure B.7: Throughput/RSSI/Distance for AP at position “L”. - 136 - RSSI (dBm) Throughput (Mbps) Distance (Meter)
Figure B.8: Throughput map for AP at position “L”. 11. Access Point at Position “K” AP at K Position TX at K2 Position File Size: 10.9 MB RX Position Distance from AP (Meter) <strong>Signal</strong> <strong>Strength</strong> (dBm) - 137 - Time (second) Throughput (Mbps) LOS/NLOS A 23.77 -80 83.4 1.052 NLOS (A-1.5m)A-B 23.44 -84 97.3 0.902 NLOS (A-2.5m)A-B 23.26 -89 136.4 0.643 NLOS (A-3.5m)A-B 23.14 -82 73.2 1.199 NLOS B 23.00 -86 106.7 0.823 NLOS (C-4m)B-C 23.09 -82 102.5 0.856 NLOS (C-3m)B-C 23.19 -85 114.6 0.766 NLOS (C-2m)B-C 23.35 -80 94.8 0.926 NLOS C 23.77 -79 63.4 1.384 NLOS (C-2m)C-D 21.84 -78 57.3 1.532 NLOS (C-3m)C-D 20.88 -83 79.8 1.100 NLOS (C-4m)C-D 19.92 -80 48.4 1.813 NLOS
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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
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In table 5.1, the
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Ethernet connectio
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sufficient signal coverage and thro
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throughput decreases along with low
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In table 5.1, when RSS is larger th
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(for example, measurement point “
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AP at Position “R” Figure 5.13
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The measurement results indicated t
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5.2.2 Throughput An</strong
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impact on RSS and throughput. Resul
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The throughput of
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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 and 126: Appendix A Preliminary Experimental
Page 127 and 128: 2. AP Mode Measurement in t
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: (C-3m)C-D 14.32 -74 13.6 6.453 NLOS
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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