PLC technology allows data transmission through home power lines. It works by adding a data signal to the electrical network using modulation techniques, then extracting the signal. PLC offers simplicity and low cost due to existing power line infrastructure. However, lack of standards and limited bandwidth present challenges. While PLC is best for local applications, Wi-Fi provides mobility but less security, and Ethernet is most suitable for large networks but with higher costs.

3. History of this technology

4. Basic principle

5. Advantages / Inconveniences

6. Comparisons with Wi-Fi & Ethernet

8. Simple Devices

10. History of the PLC 1950: first applications (10 Hz unidirectionnal) 1980: improvement of transmission (5-500kHz) 1990: first PLC modem for home automation 1997: bidirectional data transmission 2000: first experiments in France (EDF,R&D and ASCOM)

11. Principle Home power lines carry information

12. Low-cut filter Data signal isadded to the home electrical network …and then extracted

13. The data signal ismodulated to betransmitted Amplitude modulation Frequency modulation

14. Frequences used A technology which have no norm yet

15. Advantages of PLC Simplicity & Cost

16. Security Ubiquity

17. Inconveniences No normsyet Limited Number of Users

18. PLC / Wi-Fi / Ethernet comparison PLC + reduction in cost and weight as compared to ordinary wiring. + flexibility of modification. + simplicity of installation - source of interferences - local applications Wi-Fi + high mobility - source of interferences - security Ethernet + large networks - high costs and structures - no flexibility

19. Conclusion