Power line comms chipset

22 June 2011 Telecoms, Datacoms, Wireless, IoT

Maxim’s MAX2992 is an OFDM-based power line communication (PLC) modem that pairs with the MAX2991 analog front-end (AFE) to provide a complete PLC chipset for smart grid communications.

The resulting G3-PLC chipset complies with the emerging IEEE P1901.2 standard for OFDM-based communication over power lines and offers guaranteed interoperability.

G3-PLC employs advanced broadband communication techniques to achieve speeds up to 300 Kbps in the noisy power line environment. It uses OFDM technology to transmit data over multiple carriers, allowing designers to avoid interference at specific frequencies. Additionally, it features a robust operating mode, bandwidth-efficient channel coding and built-in error-correction mechanisms to guarantee reliable transmission, even when noise is stronger than the signal.

Unlike other protocols, G3-PLC can communicate across transformers, allowing utilities to connect more users to each data concentrator. In addition, it can communicate over long-distance medium-voltage lines at high speeds. Tested over 10 km, this capability saves the expense of multiple repeaters. The G3-PLC specification supports the IPv6 Internet-protocol standard to enable Internet-based energy management systems. IPv6 greatly expands the number of addresses available to grid-connected devices, ensuring that utilities can support new applications such as smart appliances and electric vehicle charging.

Operating over a wide 10 kHz to 490 kHz frequency range, G3-PLC complies with international power line signalling regulations, including CENELEC, FCC and ARIB.

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