carlos pereira
DESCRIPTION
Successive Interference Cancellation in Vehicular Networks to Relieve the Negative Impact of the Hidden Node Problem. Carlos Pereira. Outline. Problem Statement Idea Evaluation metrics Results Conclusions. Problem Statement. Hidden Node Amount of packet collisions increases for: - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/1.jpg)
SUCCESSIVE INTERFERENCE CANCELLATION IN VEHICULAR NETWORKS TO RELIEVE THE NEGATIVE IMPACT OF THE HIDDEN NODE PROBLEM
Carlos Pereira
![Page 2: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/2.jpg)
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Outline
• Problem Statement• Idea• Evaluation metrics• Results• Conclusions
![Page 3: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/3.jpg)
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Problem Statement
• Hidden Node
• Amount of packet collisions increases for:• Increasing Vehicle density• Increasing Transmitted Power• Increasing of Packet Size • Increasing of Beaconing rate
Increasing of load
Unsynchronized transmissions Packet Collisions
![Page 4: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/4.jpg)
Idea: Recover packets from collisions using SIC
• Objective• Feasibility/Benefit Study
• Requirements• Characterization/Evaluation of packet collision
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![Page 5: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/5.jpg)
Evaluation metrics
• Reception and Drop Probabilities • Probability of being involved in a collision• Number of packets overlapping• Energy distribution of colliding packets• Probability of Recovery through SIC
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![Page 6: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/6.jpg)
Results
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• Packet drop probability• 60 Veh/km; 4 Lanes; TxPower = 20; Packet Size = 500 Bytes; Beacon Rate = 6Hz
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Results
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• Packet drop probability• Reasons for Drop in StartRx (60 Veh/km; 4 Lanes; TxPower = 20dB; Packet Size =
500 Bytes; Beacon Rate = 6Hz)
![Page 8: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/8.jpg)
Results
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• Packet drop probability• Reasons for Drop in EndPreamble (60 Veh/km; 4 Lanes; TxPower = 20dB; Packet
Size = 500 Bytes; Beacon Rate =6Hz)
![Page 9: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/9.jpg)
Results
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• Packet drop probability• Reasons for Drop in EndHeader (60 Veh/km; 4 Lanes; TxPower = 20dB; Packet
Size = 500 Bytes; Beacon Rate =6Hz)
![Page 10: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/10.jpg)
Results
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• Packet drop probability• Reasons for Drop in EndRx (60 Veh/km; 4 Lanes; TxPower = 20dB; Packet Size =
500 Bytes; Beacon Rate =6Hz)
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Results
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• Packet drop probability• Variation of Beacon rate (60 Veh/km; 4 Lanes; TxPower = 20 dB; Packet Size = 300
Bytes)
![Page 12: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/12.jpg)
Results
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• Packet drop probability• Variation of Beacon rate in StartRx (60 Veh/km; 4 Lanes; TxPower = 20 dB; Packet
Size = 300 Bytes)
![Page 13: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/13.jpg)
Results
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• Packet drop probability• Variation of Beacon rate in EndPreamble (60 Veh/km; 4 Lanes; TxPower = 20 dB;
Packet Size = 300 Bytes)
![Page 14: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/14.jpg)
Results
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• Packet drop probability• Variation of Beacon rate in EndRx (60 Veh/km; 4 Lanes; TxPower = 20 dB; Packet
Size = 300 Bytes)
![Page 15: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/15.jpg)
Results
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• Packet drop probability• Variation of Packet Size (60 Veh/km; 4 Lanes; TxPower = 20 dB; Beacon Rate =
6Hz)
![Page 16: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/16.jpg)
Results
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• Packet drop probability• Variation of Packet Size in StartRx (60 Veh/km; 4 Lanes; TxPower = 20 dB; Beacon
Rate = 6Hz)
![Page 17: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/17.jpg)
Results
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• Packet drop probability• Variation of Packet Size in EndPreamble (60 Veh/km; 4 Lanes; TxPower = 20 dB;
Beacon Rate = 6Hz)
![Page 18: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/18.jpg)
Results
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• Packet drop probability• Variation of Packet Size in EndRx (60 Veh/km; 4 Lanes; TxPower = 20 dB; Beacon
Rate = 6Hz)
![Page 19: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/19.jpg)
Results
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• Packet drop probability• Variation of Vehicle Density (4 Lanes; TxPower = 20 dB; Packet Size = 500 Bytes;
Beacon Rate = 6Hz)
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Results
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• Packet drop probability• Variation of Vehicle Density in StartRx (4 Lanes; TxPower = 20 dB; Packet Size =
500 Bytes; Beacon Rate = 6Hz)
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Results
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• Packet drop probability• Variation of Vehicle Density in EndPreamble (4 Lanes; TxPower = 20 dB; Packet
Size = 500 Bytes; Beacon Rate = 6Hz)
![Page 22: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/22.jpg)
Results
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• Packet drop probability• Variation of Vehicle Density in EndRx (4 Lanes; TxPower = 20 dB; Packet Size =
500 Bytes; Beacon Rate = 6Hz)
![Page 23: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/23.jpg)
Results
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• Packet drop probability• Variation of TxPower (60 Veh/km; 4 Lanes; Packet Size = 500 Bytes; Beacon Rate
=6Hz)
![Page 24: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/24.jpg)
Results
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• Packet drop probability• Variation of TxPower in StartRx (60 Veh/km; 4 Lanes; Packet Size = 500 Bytes;
Beacon Rate =6Hz)
![Page 25: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/25.jpg)
Results
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• Packet drop probability• Variation of TxPower in EndPreamble (60 Veh/km; 4 Lanes; Packet Size = 500
Bytes; Beacon Rate =6Hz)
![Page 26: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/26.jpg)
Results
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• Packet drop probability• Variation of TxPower in EndRx (60 Veh/km; 4 Lanes; Packet Size = 500 Bytes;
Beacon Rate =6Hz)
![Page 27: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/27.jpg)
Results
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• Probability of being involved in a collision
![Page 28: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/28.jpg)
Results
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• Probability of being involved in a collision
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Results
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• Number of packets overlapping• Average
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Results
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• Number of packets overlapping• Average
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Results
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• Number of packets overlapping• Histogram (60 Veh/km; 4 Lanes; Packet Size = 500 Bytes; Beacon Rate = 2 Hz)
![Page 32: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/32.jpg)
Results
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• Number of packets overlapping• Histogram (60 Veh/km; 4 Lanes; Packet Size = 500 Bytes; Beacon Rate = 6 Hz)
![Page 33: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/33.jpg)
Results
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• Number of packets overlapping• Histogram (60 Veh/km; 4 Lanes; Packet Size = 500 Bytes; Beacon Rate = 10 Hz)
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Results
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• Energy distribution of colliding packets• Histogram for 1 Interferer (60 Veh/km; 4 Lanes; TxPower = 20dB; Packet Size = 500 Bytes;
Beacon Rate = 2 Hz)
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Results
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• Energy distribution of colliding packets• Histogram for 1 Interferer (60 Veh/km; 4 Lanes; TxPower = 20dB; Packet Size = 500 Bytes;
Beacon Rate = 6 Hz)
![Page 36: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/36.jpg)
Results
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• Energy distribution of colliding packets• Histogram for 1 Interferer (60 Veh/km; 4 Lanes; TxPower = 20dB; Packet Size = 500 Bytes;
Beacon Rate = 10 Hz)
![Page 37: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/37.jpg)
Results
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• Energy distribution of colliding packets• Histogram for 3 Interferers (60 Veh/km; 4 Lanes; TxPower = 20dB; Packet Size = 500 Bytes;
Beacon Rate = 2 Hz)
![Page 38: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/38.jpg)
Results
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• Energy distribution of colliding packets• Histogram for 3 Interferers (60 Veh/km; 4 Lanes; TxPower = 20dB; Packet Size = 500 Bytes;
Beacon Rate = 6 Hz)
![Page 39: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/39.jpg)
Results
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• Energy distribution of colliding packets• Histogram for 3 Interferers (60 Veh/km; 4 Lanes; TxPower = 20dB; Packet Size = 500 Bytes;
Beacon Rate = 10 Hz)
![Page 40: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/40.jpg)
Results
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• Energy distribution of colliding packets• Histogram for 5 Interferers (60 Veh/km; 4 Lanes; TxPower = 20dB; Packet Size = 500 Bytes;
Beacon Rate = 6 Hz)
![Page 41: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/41.jpg)
Results
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• Energy distribution of colliding packets• Histogram for 5 Interferers (60 Veh/km; 4 Lanes; TxPower = 20dB; Packet Size = 500 Bytes;
Beacon Rate = 10 Hz)
![Page 42: Carlos Pereira](https://reader036.vdocuments.site/reader036/viewer/2022070422/568163ef550346895dd56bda/html5/thumbnails/42.jpg)
ConclusionsOur feeling…
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Benefit
Load6 Mbps