A Coded Bit-Loading Linear Precoded Discrete Multitone Solution for Power Line Communication

TL;DR

This paper proposes a coded adaptive LP-DMT system for power line communication that incorporates channel coding gains into bit and energy allocation, demonstrating improved performance over classical methods.

Contribution

It introduces a new bit and energy allocation algorithm for coded LP-DMT that accounts for channel coding gains in PLC, enhancing system performance.

Findings

Coded LP-DMT outperforms classical coded DMT in simulations.

The concatenated coding scheme improves error rate performance.

The proposed algorithm effectively utilizes channel coding gains.

Abstract

Linear precoded discrete multitone modulation (LP-DMT) system has been already proved advantageous with adaptive resource allocation algorithm in a power line communication (PLC) context. In this paper, we investigate the bit and energy allocation algorithm of an adaptive LP-DMT system taking into account the channel coding scheme. A coded adaptive LP-DMT system is presented in the PLC context with a loading algorithm which ccommodates the channel coding gains in bit and energy calculations. The performance of a concatenated channel coding scheme, consisting of an inner Wei's 4-dimensional 16-states trellis code and an outer Reed-Solomon code, in combination with the roposed algorithm is analyzed. Simulation results are presented for a fixed target bit error rate in a multicarrier scenario under power spectral density constraint. Using a multipath model of PLC channel, it is shown that the proposed coded adaptive LP-DMT system performs better than classical coded discrete multitone.