Adaptive Modulation for LDPC Coded-OFDM Based Powerline Communication System

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Executive Summary

As a result of the impairments generated by the consumer electronic devices on power line channel extensive research has been carried out to mitigate the deteriorating effects. In this paper, the performance of an OFDM based power line communication system is evaluated under OPERA proposed power line channel. An adaptive modulation system is designed and the performance advantages of the system are highlighted by comparing its BER and data rate to a non adaptive system. Also it is shown that the use of half rate LDPC coding together with the adaptive modulation can further improve the performance of the system.

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