Abstract

Power line Communication (PLC) systems represent a relatively recent and rapidly evolving technology, aimed at the utilization of the electricity power lines for the transmission of data. This is due to increasing demand of low cost telecommunication, broadband and access to internet services. Power lines are inherently the most attractive medium for home networking due to its universal existence in homes, the abundance of alternating current outlets and the simplicity of the power plug. This work presented the effect of non-optimal amplitude frequency on transmission of power line communication signals by utilizing Orthogonal Frequency Division Multiplexing (OFDM) system. The simulation was carried out using MATLAB/SIMULINK with additive white Gaussian noise (AWGN) in order to obtain correct simulation performance results. Two channels of PLC were considered, the worse channel was taken into account and the channel output signal power was obtained. Bit Error Rate (BER) of Binary Phase Shift Keying (BPSK) in conjunction with multipath channel was used for a comparative performance of the studies. The results indicated that data transmission in PLC environment needed a signal to be amplified or transmitted at higher powers. The result also showed that non-optimal amplitude frequency response had no effect on transmission of the PLC signal in the frequency bands despite the low noise signal in the system. The result demonstrated that OFDM exhibited better BER performance for providing adequate transmission channel for information over a PLC system. This approach provided accurate reliability, security and robustness for better management of available energy resources to overcome the limitations of existing Power line communication technology. Keywords: Power Line Communication, Bit Error Rate, Orthogonal Frequency Division Multiplexing, Gaussian Noise, Transmission Line, Binary Phase Shift Keying DOI : 10.7176/JIEA/10-1-03 Publication date: January 31 st 2020

Highlights

  • Power Line Communication (PLC) is a way of transferring information or data through an electrical power line to provide high-speed communication capabilities to end users

  • The results show that Orthogonal Frequency Division Multiplexing (OFDM) exhibits Bit Error Rate (BER) performance that provides adequate transmission of information over a Power line Communication (PLC) channel

  • This study has presented the effect of non-optimal amplitude frequency response on transmission of power line communication signals with a view to reducing the effects of noise on the system using Orthogonal Frequency Division Multiplexing (OFDM) techniques

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Summary

Introduction

Power Line Communication (PLC) is a way of transferring information or data through an electrical power line to provide high-speed communication capabilities to end users. In PLC systems, the electric power line is used for both energy transmission and as a medium for data communication [4]. The advantage of using electric power lines as the data transmission medium is that it allows the end users to utilize their already existing electrical wiring systems to connect home appliances to each other and to the internet. Home networks utilizing this networking technology are able to control any home appliance plug into the AC outlet [2, 6, 8]. The development of power line communication systems requires detailed knowledge of the channel properties, such as transfer function, interference scenario, and channel capacity in order to choose suitable transmission methods

Power Line Signal Modulation Techniques
Amplitude Modulation
Frequency Modulation and Phase Modulation
Bottom-Up Approach
Computer Simulation of Power Line Communication
VIII. Results and Discussion
Conclusions
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