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

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D 18.03 -76 36.1 2.431 NLOS (E-4m)D-E 17.09 -72 33.7 2.604 NLOS (E-3m)D-E 16.16 -73 26.5 3.312 NLOS (E-2m)D-E 15.23 -68 24.6 3.568 NLOS E 13.42 -63 19.6 4.478 NLOS F 12.00 -70 18.2 4.822 NLOS G 18.03 -78 45.1 1.946 NLOS H 13.42 -73 31.2 2.813 NLOS (H-1.5m)F-H 12.82 -72 26.8 3.275 NLOS (H-2.5m)F-H 12.50 -72 24.9 3.525 NLOS I 8.49 -67 11.2 7.836 NLOS L 6.71 -52 9.2 9.540 NLOS M 3.35 -54 8.9 9.861 NLOS J 6.00 -48 8.3 10.574 LOS N 6.00 -46 8.4 10.448 LOS (N-2m)N-O 6.32 -61 9.7 9.048 NLOS (N-3m)N-O 6.71 -66 11.2 7.836 NLOS O 7.50 -72 12.4 7.078 NLOS (P-2.5m)O-P 8.85 -71 12.8 6.857 NLOS (P-1.5m)O-P 9.60 -65 13.3 6.599 NLOS P 10.82 -68 15.2 5.774 NLOS (P-1.5m)P-Q 10.06 -74 23.2 3.783 NLOS (P-2.5m)P-Q 9.66 -71 18.8 4.668 NLOS Q 9.00 -70 15 5.851 NLOS (R-2.5m)Q-R 9.66 -74 16.1 5.451 NLOS (R-1.5m)Q-R 10.06 -76 21.4 4.101 NLOS R 10.82 -67 11.6 7.566 NLOS (R-1.5m)R-S 9.60 -65 11.2 7.836 NLOS (R-2.5m)R-S 8.85 -66 10.3 8.521 NLOS S 7.50 -61 9.7 9.048 NLOS Table B.11: Numerical results for AP at position “K”. - 138 -
60 40 20 0 -20 -40 -60 -80 -100 Access Point at position "K" : Distance/RSSI/Throughput A B C D E F G H I L M J N O P Q R S RX Position Figure B.9: Throughput/RSSI/Distance for AP at position “K”. Figure B.10: Throughput map for AP at position “K”. - 139 - RSSI (dBm) Throughput (Mbps) Distance (Meter)
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
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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
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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 and 150: (C-3m)C-D 14.32 -74 13.6 6.453 NLOS
Page 151: Figure B.8: Throughput map for AP a
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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