Computer Science – Information Theory
Scientific paper
2008-09-30
International Workshop on Signal Processing Advances in Wireless Communications, Recife, Pernambuco : Brazil (2008)
Computer Science
Information Theory
Scientific paper
10.1109/SPAWC.2008.4641669
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.
Baudais Jean-Yves
Crussière Matthieu
Hélard Jean-François
Muhammad Fahad Syed
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