Improving Data Transmission Efficiency over Power Line Communication(PLC) System Using OFDM
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Research India Publications
Abstract
Description
Power lines were originally designed for AC power
distribution at 50 Hz and 60 Hz, and the characteristics of
this channel present some technical challenges for data
transmission at these frequencies. This paper presents
architecture for the physical layer of a PLC transceiver
based on OFDM and the impact of a PLC transmission
channel. A suitable and widely accepted PLC channel model
is used for simulation purpose. In achieving the aim and
objectives of this research work, simulation of PLC system
was implemented using OFDM as the choice of modulation
scheme. The results obtained compared with the theoretical
QPSK result show that OFDM reduced the degrading effect
of the PLC channel leading to a good performance.
Furthermore, it is observed that at a signal level of 4dB, the simulated BER matches up with the required standard which is the theoretical QPSK value. At this signal level of 4dB,the theoretical and simulated BER graphs converge. Thispoint gives the minimum BER tolerance of 10-2 that is
acceptable for data transmission over PLC.
Keywords
TK Electrical engineering. Electronics Nuclear engineering