Low Complexity Discrete Bit-loading for OFDM Systems with Application in Power Line Communications

Khalifa S. Al-Mawali, Amin Z. Sadik, Zahir M. Hussain

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DOI: 10.4236/ijcns.2011.46043                

Abstract

Adaptive bit-loading algorithms can improve the performance of OFDM systems significantly. The tradeoff between the performance of the algorithm and its computational complexity is essential for the implementation of loading algorithms. In this paper, we present a low complexity non-iterative discrete bit-loading algorithm to maximize the data rate subject to specified target BER and uniform power allocation. Simulation results show that the proposed algorithm outperforms the equal-BER loading and achieves similar rates to incremental allocation, yet with much lower complexity.

Keywords

Bit-Loading, OFDM, Power Line Communications

Conflicts of Interest

The authors declare no conflicts of interest.

References

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