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Decision-directed channel estimation based on iterative linear minimum mean square error for orthogonal frequency division multiplexing systems

Decision-directed channel estimation based on iterative linear minimum mean square error for orthogonal frequency division multiplexing systems

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A decision-directed (DD) channel estimation based on iterative linear minimum mean square error (LMMSE) is proposed for orthogonal frequency division multiplexing systems. Existing DD channel estimation is well known to have the problem of error propagation because of symbol-by-symbol detection. The proposed algorithm can estimate the correction term of current channel state information (CSI) according to the error vector of previous CSI by applying the orthogonality principle, and corrects the current CSI with this correction term. Analysis and simulation results have shown that this method has no error propagation problem. The performance of the proposed algorithm is much better than the conventional DD channel estimation, and close to the optimal LMMSE estimator, but with much less computational complexity compared with the optimal LMMSE estimator.

References

    1. 1)
      • M. Huang , X. Chen , L. Xiao , S. Zhou , J. Wang . Kalman-filter-based channel estimation for orthogonal frequency-division multiplexing systems in time-varying channels. IET Commun. , 4 , 795 - 801
    2. 2)
      • P.K. Frenger , N. Arne , B. Svensson . Decision-Directed coherent detection in multicarrier systems on Rayleigh fading channels. IEEE. Trans. Veh. Technol. , 2 , 490 - 498
    3. 3)
      • Zhu, J., Lee, W.: `Channel estimation with power-controlled pilot symbols and decision-directed reference symbols', Proc. IEEE Veh. Technol. Conf., Oct 2003, p. 1268–1272.
    4. 4)
      • Y. Li , L.J. Cimini , N.R. Sollenberger . Robust channel estimation for OFDM systems with rapid dispersive fading channel. IEEE Trans. Commun. , 7 , 902 - 915
    5. 5)
      • R. Nee , R. Prasad . (2000) OFDM wireless multimedia communications.
    6. 6)
      • S. Kalyani , K. Giridhar . Mitigation of error Propagation in Decision Directed OFDM channel tracking using generalized M estimators. IEEE Trans. Signal Process , 5 , 1659 - 1672
    7. 7)
      • B.G. Yang , Z.G. Cao , K.B. Letaief . Analysis of low-complexity windowed DFT-based MMSE channel estimator for OFDM system. IEEE Trans. Commun. , 11 , 1977 - 1987
    8. 8)
      • B. Le Floch , R. Halbert-Lassalle , D. Castelain . Digital sound broadcasting to mobile receivers. IEEE Trans. Consum. Electron. , 3 , 493 - 503
    9. 9)
      • S. Zhou , G.B. Giannakis . Finite-Alphabet based channel estimation for OFDM and related multicarrier systems. IEEE Trans. Commun. , 8 , 1402 - 1414
    10. 10)
      • Y. Lee , W.R. Wu . Adaptive channel aided decision feedback equalization for SISO and MIMO systems. IEE Proc., Commun. , 5 , 657 - 663
    11. 11)
      • M. Li , W. Hamouda . MMSE decision-feedback detectors for DS-CDMA in fast-fading channels. IEE Proc., Commun. , 6 , 878 - 884
    12. 12)
      • J.D. Zhang , B.Y. Zheng . Overview of pilot-aided channel estimation in OFDM. J. China Inst. Commun. , 1 , 117 - 125
    13. 13)
      • Y. Li . Pilot-symbol-aided channel estimation for OFDM in wireless systems. IEEE Trans. Veh. Technol. , 4 , 1207 - 1215
    14. 14)
      • (2003) Air interface for fixed broadband wireless access systems amendment 2: medium access control modifications and additional physical layer specifications for 2–11 GHz.
    15. 15)
      • Wang, Z., Mathew, G., Yan, X., Massayuki, T.: `A robust maximum likelihood channel estimator for OFDM systems', Proc. IEEE Wireless Communication and Networking Conf., March 2007, p. 169–174.
    16. 16)
      • S.M. Kay . (1993) Fundamentals of statistical signal processing volume I: estimation theory.
    17. 17)
      • Yang, B.G., Letaief, K.B., Cheng, R.S., Cao, Z.G.: `Windowed DFT based pilot-symbol-aided channel estimation for OFDM systems in multipath fading channels', Proc. IEEE Veh. Technol. Conf., May 2000, p. 1480–1484.
    18. 18)
      • (1999) HIPERLAN type2 technical specification; physical (PHY) layer.
    19. 19)
      • H. Sari , G. Karam , I. Jeanclaude . Transmission techniques for digital terrestrial TV broadcasting. IEEE Commun. Mag. , 2 , 100 - 109
    20. 20)
      • (1999) Wireless LAN medium access control (MAC) and physical layer (PHY) specifications: high speed physical layer in the 5 G Hz band.
    21. 21)
      • J. Heiskala , J. Terry . (2002) OFDM wireless LANs: a theoretical and practical guide.
    22. 22)
      • Z.R. Jing , Y. Yang . (2004) Signal detection and estimation.
    23. 23)
      • J. Gao , H. Liu . Decision-Directed estimation of MIMO time-varying Rayleigh fading channels. IEEE Trans. Commun. , 4 , 1412 - 1417
    24. 24)
      • M. Morelli , U. Mengali . A comparison of pilot-aided channel estimation methods for OFDM systems. IEEE Trans. Signal Process. , 12 , 3065 - 3073
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