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

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9. Access Point at Position “I” RX Position AP at I TX at I2 Position File Size: 10.9 MB Distance from AP (Meter) <strong>Signal</strong> <strong>Strength</strong> (dBm) - 132 - Time (second) Throughput (Mbps) LOS/NLOS A 17.00 -60 9.3 9.437 LOS (A-1.5m)A-B 17.07 -62 9.2 9.540 NLOS (A-2.5m)A-B 17.18 -63 9.6 9.142 NLOS B 18.03 -71 11.4 7.699 NLOS (C-4m)B-C 18.79 -76 24.4 3.597 NLOS (C-3m)B-C 19.24 -74 17.1 5.132 NLOS (C-2m)B-C 19.72 -75 21.7 4.044 NLOS C 20.81 -73 14.2 6.181 NLOS (C-2m)C-D 19.21 -76 25.9 3.389 NLOS (C-3m)C-D 18.44 -74 20.4 4.302 NLOS (C-4m)C-D 17.69 -75 20.8 4.219 NLOS D 16.28 -74 19.4 4.524 NLOS (E-3m)D-E 15.00 -72 19.8 4.433 NLOS (E-2m)D-E 14.42 -73 18.3 4.796 NLOS E 13.42 -68 9.9 8.865 NLOS G 11.00 -60 8.4 10.448 LOS F 8.49 -66 10.7 8.202 NLOS (H-2.5m)F-H 6.50 -62 9.8 8.956 NLOS (H-1.5m)F-H 6.18 -59 8.6 10.205 NLOS H 6.00 -49 8.3 10.574 LOS L 9.00 -68 9.2 9.540 NLOS M 10.06 -61 8.4 10.448 NLOS J 6.00 -56 8.6 10.205 LOS (J-1.5m)J-K 6.18 -53 8.3 10.574 NLOS (J-2.5m)J-K 6.50 -59 9.7 9.048 NLOS K 8.49 -66 12.2 7.194 NLOS (N-2.5m)K-N 11.24 -59 10.8 8.126 NLOS (N-1.5m)K-N 12.09 -64 13.7 6.406 NLOS N 13.42 -75 20.5 4.281 NLOS (N-2m)N-O 14.42 -73 15.2 5.774 NLOS
(N-3m)N-O 15.00 -72 15.6 5.626 NLOS O 15.95 -74 20.5 4.281 NLOS (P-3.5m)O-P 16.62 -77 22.3 3.936 NLOS (P-2.5m)O-P 17.33 -83 47.8 1.836 NLOS (P-1.5m)O-P 18.06 -80 32 2.743 NLOS P 19.21 -76 24.3 3.612 NLOS (P-1.5m)P-Q 18.31 -77 21.1 4.159 NLOS (P-2.5m)P-Q 17.76 -71 13.2 6.649 NLOS (P-3.5m)P-Q 17.24 -72 13.2 6.649 NLOS Q 16.16 -70 14.2 6.181 NLOS (R-2.5m)Q-R 15.21 -62 10.6 8.280 NLOS (R-1.5m)Q-R 15.07 -62 8.8 9.973 NLOS 60 40 20 0 -20 -40 -60 -80 -100 R 15.00 -48 8.3 10.574 LOS S 10.50 -52 8.5 10.325 LOS Table B.9: Numerical results for AP at position “I”. Access Point at position "I" : Distance/RSSI/Throughput A B C D E G F H L M J K N O P Q R S RX Position Figure B.5: Throughput/RSSI/Distance for AP at position “I”. - 133 - 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
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 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: 60 40 20 0 -20 -40 -60 -80 -100 Acc
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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