The document describes the master and slave firmware used to transmit data to a single slave or multiple slaves. Solutions include limiting data rates, using ofdm modulation, and selecting suitable frequencies. You essentially need to push ac signals onto the dc power line, and separate them out again
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This application note presents how to implement a low cost, low power, dc power line communication based on greenpak and capacitive coupling
Compared with other solutions, the main advantage of greenpak is that the communication method or content can be modified as needed.
Note that the power lines might be direct current (dc) or alternating current (ac) lines The coupler blocks the main dc voltage from the grid and passes the communication signal for dc lines. It depends on how much dc power you need, affecting the network impedance and voltage Since fcc limits restricted 64 kbps to 56k, this would no longer apply.
In this article we focus on the use of plc over dc power lines and present a reference design that can help customers adopt plc over dc power lines quickly and effectively. Dc power line communication (plc) systems face challenges because power cables aren't designed for communication frequencies, leading to signal reflections and interference
