Smart Grid Communications

The ACN mission to pioneer a new Smart Grid communications technology took root in disappointing field experiences with several proprietary technologies on the market. Based on an understanding of the drawbacks of existing solutions in live deployment, our focus has been on addressing and solving these engineering challenges with the application of sophisticated signal processing.

The Company’s new technology has the following unique and crucial features for Smart Grid infrastructure communications:

Dynamic notching with 50 dB attenuation in the frequency bands already allocated to other users, ensuring that the leakage energy in these forbidden  frequency bands is so small that the interference generated by Smart Grid communications is negligible.

A 50dB notch inside the allocated bandwidth

A 50dB deep notch inside the allocated bandwidth

Bandpass Wavelet-OFDM modulation

  • operating in any frequency band up to  80 MHz
  • providing higher data rates when using larger frequency bands (60MHz)
  • using Low Density Parity Check (LDPC) encoding as a forward error correction (FEC). LDPC allows reliable operation within 1.5 dB of the theoretical Shannon limits.
  • ITU-T G.hn has selected the LDPC code as the mandatory FEC.

Higher robustness against narrowband interferer and impulse noise.

High availability and reliability: capability to make best use of the available frequency band using cognitive channel selection techniques to mitigate the impact of channel noise.
ACN’s technology allows utilities to leverage their existing power distribution networks for communications, and be less dependent on external communications providers.  The Company has successfully validated its technology in numerous field trials.