Power talk in DC micro grids: Constellation design and error probability performance

Power talk is a novel concept for communication among units in a Micro Grid\n(MG), where information is sent by using power electronics as modems and the\ncommon bus of the MG as a communication medium. The technique is implemented by\nmodifying the droop control parameters from the primary control level. In this\npaper, we consider power talk in a DC MG and introduce a channel model based on\nThevenin equivalent. The result is a channel whose state that can be estimated\nby both the transmitter and the receiver. Using this model, we present design\nof symbol constellations of arbitrary order and analyze the error probability\nperformance. Finally, we also show how to design adaptive modulation in the\nproposed communication framework, which leads to significant performance\nbenefits.\n