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In-vehicle PLC

In-vehicle PLC. Milad Mohammadi L. Lampe, M. Lok, S. Mirabbasi, M. Mirvakili, R. Rosales, & P. van Veen. Outline. Background Past Work Present Work / Results Future Work. Milad Mohammadi. 1. Background. Milad Mohammadi. Significance. Wiring Length: 1955 : 45m 2002 : 4km Today:

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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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