Doubly-selective channel estimation with unknown interference in OFDM systems

Doubly-selective channel estimation with unknown interference in OFDM systems

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In orthogonal frequency division multiplexing-based spectrum sharing networks, due to inefficient coordination or imperfect spectrum sensing, the signals from femtocells or secondary users appear as interference in a subset of subcarriers of the primary systems. For pilot-based doubly-selective channel estimation, the embedded pilots in pilot subcarriers would inevitably be harmed by the unpredictable interference. This unsolved issue is considered and proposed is a variational expectation maximisation-based method to iteratively learn the distribution of thermal noise plus interference, and refine doubly-selective channel estimates. Simulations demonstrated the superiority of the proposed approach over existing algorithms without considering interference mitigation.


    1. 1)
    2. 2)
    3. 3)
      • 3. Sesia, S., Toufik, I., Baker, M.: ‘LTE – the UMTS long term evolution: from theory to practice’ (Wiley, 2011).
    4. 4)
      • 4. Teo, K., Ohno, S.: ‘Optimal MMSE finite parameter model for doubly selective channels’, Proc. IEEE Globecom, 2005, pp. 35013507.
    5. 5)
    6. 6)
    7. 7)
    8. 8)
      • 8. Bishop, C.M.: ‘Pattern recognition and machine learning’ (Springer, 2006).

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