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Improved channel estimation with decision feedback for OFDM systems

Improved channel estimation with decision feedback for OFDM systems

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An improved channel estimation strategy for a continuous orthogonal frequency division multiplexing transmission scheme is presented, based on feedback from decoding decisions of forward error correction of the information data. No special redundancy, such as pilot tones, is required.

Inspec keywords: frequency division multiplexing; decoding; redundancy; automatic repeat request; forward error correction

Other keywords: channel estimation; decoding decisions; forward error correction; pilot tones; redundancy; OFDM systems; decision feedback; continuous orthogonal frequency division multiplexing

Subjects: Codes; Communication switching

References

    1. 1)
      • V. Mignone , A. Morello . CD3-OFDM: A novel demodulation scheme for fixed and mobile receivers. IEEE Trans. Commun. , 9 , 1144 - 1151
    2. 2)
      • Bossert, M., Donder, A., Trushkin, A.: `Channel estimation and equalization in orthogonal frequency divisionmultiplexing systems', ITG-Fachbericht 135, ‘Mobile Kommunikation’, September 1995, p. 485–492.
    3. 3)
      • S.L. Marple . (1987) Digital spectral analysis with applications.
    4. 4)
      • W.H. Press , S.A. Teukolsky , W.T. Vetterling , B.P. Flannery . (1992) Numerical recipes.
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