  This paper proposes the use of a LoRa like chirp spread spectrum physical
layer as the basis for a new Power Line Communication modulation scheme suited
for low-bandwidth communication. It is shown that robust communication can be
established even in channels exhibiting both extreme multipath interference and
low SNR (-40dB), with synchronisation requirements significantly reduced
compared to conventional LoRa. ATP-EMTP simulations using frequency dependent
line and transformer models, and simulations using artificial Rayleigh channels
demonstrate the effectiveness of the new scheme in providing load data from LV
feeders back to the MV primary substation. We further present experimental
results based on a Field Programmable Gate Array hardware implementation of the
proposed scheme.
