Update on power line telecommunication (PLT) activities in Europe
2002 IEEE International Symposium on Electromagnetic Compatibility - Tập 1 - Trang 17-22 vol.1
Tóm tắt
Due to recent deregulations in the EU utility market, it is tempting to compete with classical telecom providers now over power lines, e.g. for broadband internet access in mostly residential areas. PLC (power line communications, sometimes called PL-T standing for telecommunications) uses unshielded, 230 V/50 Hz low voltage distribution cables inside and outside of buildings as transmission medium for Mbit/s data rates. This requires mains injected radio frequency levels (mW, 1-30 MHz) that are EMC critical. Aside from the international standards making process, there are new German regulations in place (RegTP, NB 30-07/01) presently controlling radiated emissions below 30 MHz, in the short wave user spectrum. This protects sensitive monitoring/communication services in both military and government. The latest developments with pro and cons are analyzed, simulations discussed and compared to first, EMC critical measurement results from available real wide-spread PLC systems.
Từ khóa
#Europe #Programmable control #Electromagnetic compatibility #Telecommunications #Internet #Power line communications #Low voltage #Communication cables #Radio frequency #NiobiumTài liệu tham khảo
welsh, 0, EMC Zurich 2001 Symposium, March, (York Univ. underestimated source antenna factor of ?15db, based on authors tests- could even be positive! Summation effects of sources could be high; long hall short wave communications will work with only mW TX-output power, depending on ionosphere propagations;, This is also a matter of background noise considerations typically 10 to 20 dB below NB 30 following some old EMC statistics of EMI occurrence Different from old MPT 1750 approach taking noise floors for receivers into account )
marthe, 0, Outdoor Radiated Emission Associated with PLC Systems, 2001 IEEE International EMC Symposium
2001, EU-Workshop: “Compatibility” between Radio-Communications Services and PLC Systems WS EU DG Enterprise, Brussels, with Mark Bogers, (current state of technical work is not that high incl small product exhibition)
10.1109/15.748131
0, Megabits per Second on 50Hz Power Lines, English search new power line PLC/including interference audio samples of PLC modulation received in different receiver demodulation modes)
2001, Practical Paper IEEE EMC Society Newsletter
0, Sky Wave PLC Simulation, Dr Widmer ASCOM CH (Estimates about 10dB noise increase for ?40dBm/Hz nation wide)
0, RSGB UK EMC Conunittee, (Measurements and Noise Considerations) Protocols of ATRT UAGr 3 PLC-Advisory Board of RegTp protocols since 1998-Communications in German by email to members not classified
0, EMC Wroclaw 6/2000 Symposium, Poland-PLC WS with Dr Vick -Dresden Germany- (first findings from tests and simulations)
0, BND/FGAN-Benger Study: Auswirkungen PLC auf die Fernmeldeaufklärung 9/2001, PLC effects on listening posts incl sky waves Result Demanding 25 dB decrease of NB30 limits, 1, 5
0, Power line communications literature overview by University Essen Germany
0, Mostly marketing information
2000, EMC Aspects of PLC, Manfred Stecher page 407 ff EMC Europe 2000 Brugge Belgium