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http://dx.doi.org/10.5762/KAIS.2010.11.1.141

Turbo Coded OFDM Scheme for a High-Speed Power Line Communication  

Kim, Jin-Young (Department of Wireless Communication Engineering, Kwangwoon University)
Koo, Sung-Wan (Department of Wireless Communication Engineering, Kwangwoon University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.11, no.1, 2010 , pp. 141-150 More about this Journal
Abstract
In this paper, performance of a turbo-coded OFDM system is analyzed and simulated in a power line communication channel. Since the power line communication system typically operates in a hostile environment, turbo code has been employed to enhance reliability of transmitted data. The performance is evaluated in terms of bit error probability. As turbo decoding algorithms, MAP (maximum a posteriori), Max-Log-MAP, and SOVA (soft decision viterbi output) algorithms are chosen and their performances are compared. From simulation results, it is demonstrated that Max-Log-MAP algorithm is promising in terms of performance and complexity. It is shown that performance is improved 3dB by increasing the number of iterations, 2 to 8, and interleaver length of a turbo encoder, 100 to 5000. The results in this paper can be applied to OFDM-based high-speed power line communication systems.
Keywords
OFDM; Power Line; Communication; Turbo Coding;
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