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Journal of Electrical and Computer Engineering
Volume 2013, Article ID 402514, 9 pages
http://dx.doi.org/10.1155/2013/402514
Research Article

Radiation Mitigation for Power Line Communications Using Time Reversal

1Orange Labs Networks, 2 Avenue Pierre Marzin, 22200 Lannion, France
2Telecom Bretagne, Microwave Department, Technopôle Brest-Iroise, 29238 Brest, France

Received 4 August 2012; Revised 16 January 2013; Accepted 21 January 2013

Academic Editor: Moises V. Ribeiro

Copyright © 2013 Amilcar Mescco et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Power Line Communication (PLC) is the response for nowadays high demand of multimedia services in domestic environment, not only for its fast and reliable transfer characteristics but also for its flexible low cost implementation, since the PLC technology uses the existing electrical network infrastructure and the omnipresent outlets throughout the home. The transfer of such a high bit rate through the mains network generates acceptable radiated emission regulated by international standards, but the increment in speed for new generation PLC may cause higher levels of emissions. This paper explains the use of the Time Reversal (TR) technique to mitigate radiated emissions from PLC systems. This method was probed experimentally in real electrical networks with excellent results: in 40% of the observations, the Electromagnetic Interference (EMI) generated by PLC transmission could be reduced by more than 3 dB, and this EMI mitigation factor could increase to more than 10 dB in particular configurations.