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Power Line Communications in Finland Martin Andersson, Deputy Director, Ficora 16.10.03

Power Line Communications in Finland Martin Andersson, Deputy Director, Ficora 16.10.03. PLC in Finland. market entry with PLC networks does not require any kind of authorisation; only a notification of the operation of public telecommunications to FICORA

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Power Line Communications in Finland Martin Andersson, Deputy Director, Ficora 16.10.03

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  1. Power Line Communications in FinlandMartin Andersson, Deputy Director, Ficora16.10.03

  2. PLC in Finland • market entry with PLC networks does not require any kind of authorisation; only a notification of the operation of public telecommunications to FICORA • at present 4 energy companies, Turku, Pori, Vantaa and Kuopio operate PLC • the energy companies provide on a commercial basis broadband internet access to their energy customers • the services are offered on dense city areas, where each transformer station has a certain minimum subscriber potential • underground power cables are used • In July there were some 500 broadband subscribers

  3. Example of a PLC service offering (Porin energia Oy) • PLC is distributed from the transformer via the low voltage network to the house • an adapter for the wall socket is required from which a cable is attached to the computer’s USB port • the data is encrypted with RC4 encoding • internet access at 256/128 kb/s costs 39,50 euro • internet access at 1 Mb/256 kb/s costs 49 euro • the provision of a server is prohibited

  4. Electromagnetic radiation from PLC networks (1) • FICORA has requested that electromagnetic radiation from PLC networks should be in compatibility with the German national limit (NB30) until common European limits will be adopted • FICORA has measured radiated emissions from PLC networks. Results showed that with a PLC system, that used DSSS (Direct Sequence Spread Spectrum), interference level was very high • 3 meters outside from transformer cabinet, maximum field strength was 55 dBuV/m and in-house it was nearly 80 dBuV/m

  5. Electromagnetic radiation from PLC networks (2) • The present commercial PLC networks are running with another technology that uses Gaussian Minimum Shift Keying • According to FICORA measurements, this system can operate in certain conditions in compatibility with NB30, but it also exceeds NB30 if maximum data power is used • FICORA has so far received two complaints on inter-ference of PLC with other services: • interference with short wave radio, radio amateur in Turku • Interference with a cable-TV operator, which also provides broadband access; the return path (data from the subscriber to the operator) is interfered by the PLC signals • the cable TV operator has requested FICORA to solve the interference

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