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In-vehicle PLC

This presentation outlines significant developments in in-vehicle power line communication (PLC), highlighting the evolution of electrical systems in automobiles. It covers past work focused on channel characterization and modeling undertaken by Milad Mohammadi and collaborators, as well as current research conducted at the University of British Columbia using the Pontiac Solstice model. Key findings on insertion gain and impedance measurements are discussed, along with future research directions aimed at addressing impulsive noise in data communication. Open-source data is available for further exploration.

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In-vehicle PLC

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  1. In-vehicle PLC • Milad Mohammadi • L. Lampe, M. Lok, S. Mirabbasi, M. Mirvakili, R. Rosales, & P. van Veen

  2. Outline • Background • Past Work • Present Work / Results • Future Work Milad Mohammadi

  3. 1. Background Milad Mohammadi

  4. Significance • Wiring Length: • 1955: 45m • 2002: 4km • Today: • 80% of auto-innovations stem from electronics. • Wiring harness is the most expensive & complicated electrical component! Milad Mohammadi

  5. Motivation • Want to ↓ comm. network complexity • ↓ weight & price • ↑transmission reliability • ↑ throughput • Every elec. equipment has a power line  Use POWER-LINE Data Communication Milad Mohammadi

  6. Example We are interested in high connectivity Milad Mohammadi

  7. 2. Past Work Milad Mohammadi

  8. Past Work • PSA Peugeot Citroen • University of Lille, France • Channel Characterization & Modeling • Transfer Function • Load • Noise • Impulse Response Milad Mohammadi

  9. Past Work • PSA Peugeot Citroen • University of Lille, France • Channel Characterization & Modeling • Transfer Function • Load • Noise • Impulse Response Milad Mohammadi

  10. 3. UBC PLC Project

  11. Pontiac Solstice 2006 University of British Columbia, Canada Channel Characterization & Modeling Transfer Function Load Noise Present Work Milad Mohammadi

  12. Pontiac Solstice 2006 University of British Columbia, Canada Channel Characterization & Modeling Transfer Function Load Noise Present Work Milad Mohammadi

  13. Setup • Two-port Network • S-Parameters Milad Mohammadi

  14. Setup • 8 Nodes • 12 Vehicle States • 211 Measurements • Freq. Range: 500kHz – 100MHz Milad Mohammadi

  15. Results Milad Mohammadi

  16. Insertion Gain • Insertion Gains of the “Cigarette Lighter  Computer Unit” link. • Vehicle at 12 different states Milad Mohammadi

  17. Insertion Gain Indirect Path   Direct Path Milad Mohammadi

  18. Insertion Gain • Direct Path • Indirect Path Milad Mohammadi

  19. Impedance • |Zin| at two different vehicle states • Important for Modem Design Front Right Light Milad Mohammadi

  20. Statistics: Fixed Gain • CDF Plot of all Measurements. Milad Mohammadi

  21. Statistics: Fixed Freq. • Multiple Freq. (eg FSK) 50th, 10th and 1st percentiles of insertion gains as function of frequency. Milad Mohammadi

  22. 4. Future Work Milad Mohammadi

  23. Future Work • Impulsive Noise • Impulse Response • Performing Data Communication Milad Mohammadi

  24. Group Website Our measurement data are open-source & available at: http://www.ece.ubc.ca/~lampe/VehiclePLC.html Milad Mohammadi

  25. http://www.ece.ubc.ca/~lampe/VehiclePLC.html Thank You! • UBC In-vehicle PLC Group

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