Journal of electromagnetic engineering and science

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Joint Subcarrier Matching, Power Allocation and Bit Loading in OFDM Dual-Hop Systems

  • Kong, Hyung-Yun (Department of Electronic Engineering, University of Ulsan) ;
  • Lee, Jin-Hee (Department of Electronic Engineering, University of Ulsan)
  • Received : 2010.03.30
  • Published : 2010.06.30
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Abstract

Orthogonal Frequency Division Multiplexing(OFDM) dual-hop systems can take full advantages of the techniques of both multi-hop communication and OFDM. To achievethis end, we propose a joint subcarrier matching, power allocation and bit loading algorithm operating under a total power constraint and the same Bit Error Rate(BER) threshold over all subcarriers. Simulation results demonstrated system throughput improvement compared to single-hop systems and dual-hop systems with different bit loading algorithms for each relay position, power constraint, and required BER.

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References

  1. F. H. P. Fitzek, M. D. Katz, Cooperation in Wireless Networks: Principles and Applications, Springer, 2006.
  2. R. V. Nee, R. Prasad, OFDM for Wireless Multimedia Communications, Artech House, 2000.
  3. W. Wang, S. Yan, and S. Yang, "Optimally joint subcarrier matching and power allocation in OFDM multihop system", Eurasip Journal on Advances in Signal Processing, vol. 2008, ArticleID 241378, doi: 10.1155/2008/241278.
  4. S. Nader-Esfahni, M. Afrasiabi, "Simple bit loading algorithm for OFDM-based systems", IET on Commun., vol. 1, pp. 312-316, Jun. 2007. https://doi.org/10.1049/iet-com:20060401
  5. A. M. Wyglinski, F. Labeau, and P. Kabal, "Bit loading with BER-constraint for multicarrier systems", IEEE Trans. Wire. Commun., vol. 4, pp. 1383-1387, Jul. 2005. https://doi.org/10.1109/TWC.2005.850313
  6. Y. George, O. Amrani, "Bit loading algorithms for OFDM", IEEE ISIT, p. 391, 2004.
  7. B. Gui, L. J. Cimini, "Bit loading algorithms for cooperative OFDM Systems", Eurasip Journal on Wireless Communications and Networking, vol. 2008, ArticleID 476797, doi: 10.1155/2008/476797.
  8. X. Zang, B. Ottersten, "Power allocation and bit loading for spatial multiplexing in MIMO systems", IEEE ICASSP, vol. 5, pp. V-53-56, 2003. https://doi.org/10.1109/ICASSP.2003.1199866
  9. H. Ochiai, P. Mitran, and V. Tarokh, "Design and analysis of collaborative diversity protocols for wireless sensor networks", IEEE VTC2004-Fall, vol. 7, pp. 4645-4649, Sep. 2004. https://doi.org/10.1109/VETECF.2004.1404971
  10. N. Ahmed, M. A. Khojastepour, and B. Aazhang, "Outage minimization and optimal power control for the fading relay channel", IEEE Information Theory Workshop, pp. 458-462, Oct. 2004. https://doi.org/10.1109/ITW.2004.1405347