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Advanced Power Line Communication: Addressing Noise and Attenuation Issues

Developed over 40 years ago, power line communication has faced significant challenges with noise and attenuation on low, medium, and high voltage lines. Traditional systems experience serious limitations, with noise levels reaching up to 100 dB/km. In contrast, modern techniques utilize OFDM and Turbo convolutional FEC to achieve high-speed data rates, capable of reaching up to 1 Gbps. Applications abound in smart grid control and home area networks. This primer explores the evolution, challenges, and advancements in PLC technology and standards like IEEE P1905 and G.hn.

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Advanced Power Line Communication: Addressing Noise and Attenuation Issues

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  1. Developed over 40 years ago Major problems with attenuation, noise 10-30 dB/km on LV lines 100 dB/km on MV, HV lines Transformers even worse Massive amounts of noise, both online and emitted X10 uses ASK, 20 bps Modern systems use OFDM HPAV capable of 200 Mbps gross, 150 Mbps net; 500 Mbps and 1 Gbps expected Turbo convolutional FEC MIMO (both “hot” and “neutral”) Power Line Comm Primer

  2. Apps in line metering, Smart Grid control, HANs Other high-speed standards: HomePNA MoCA UPA (Spanish) G.hn (ITU standard) IEEE P1905 (interoper-ability between Wi-Fi, Ethernet, MoCA) Many NB (low speed) standards IEC 61334 IEEE 1901.2 HomePlug Green PHY G3 PRIME G.hnem Common approaches: OFDM, 8PSK, DQPSK, RS FEC, CRC PLC Primer, p. 2

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