Research on active mode communication of uplink power line TWACS

Traditional power line communication mode works in master-slave communication mode and be slow,thus,it' s hard to transfer the real-time warning messages. Based on synchronous information is increased when the uplink signals are modulated; the current sampling signal will be formed composite signal, using the frequency domain signal energy parameters of the composite signal to synchronization detection,thus,the master communication station could demodulate the uplink signals from terminal and transfer the real-time warning messages.