Adaptation and Performance Evaluation of Existing Power Line for Broadband Communication.

The deployment of power line communication (PLC) has gained tremendous attention in recent times because of the dawn of the internet, the increasing need for fast connectivity, and it does not require any new wiring installations which significantly reduces the deployment costs. Power lines are originally designed to transmit power from the suppliers to the customers at low frequency (50 Hz or 60 Hz). They are used to improve communication infrastructure, therefore making them useful as a communication channel. This paper presents an investigation of the use of the existing power grid line as a medium for Broadband communication by using orthogonal frequency division multiplexing (OFDM) technology at the transceiver. The transmitter performs coding of data signals to keep it from fading and radiation. In order to repair signals attenuated and affected by noise during transmission over the power line, the decoupling and OFDM receiver performs filtering and decoding, respectively. In the OFDM transmitter, quadrature phase-shift keying (QPSK) modulation as well as the OFDM receiver QPSK demodulation are used to create a set of data symbols and to predict the probability of errors. An error of 0.036 dB was obtained, which is in the allowable range of signals with good quality to be transmitted to the customers. The Coupling circuit is used as the heart of the system design and is used to insert the modulated signals from the transmitter to the power line. It is also used to extract the signals from the receiver, and to protect the circuit from medium and low voltage and low-frequency signals (less than or equal to 32 kV and 50 Hz). [ABSTRACT FROM AUTHOR]