We present the bidirectional power line communication system developed in parallel to an electronic board for driving and control\nof HID (high-intensity discharge) and LED (light-emitting diode) lamps. The communication system, developed to be applied\nin the sector of public illumination, is been designed to combine high efficiency and reliability with low production costs; it\nconsists indeed of discrete cheap components. The communication system described in this paper implements the technique of\ntransporting digital information over existing power lines, avoiding the issue of installing new cables. Digitized signals can use\npower line cables through the amplitude voltage and current modulation. The solution proposed is more advantageous compared\nto communication techniques currently on the market which are essentially two types, power line carrier (modem for high-voltage\nlines) or radio (zig-Bee transceiver).
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