Training sequence reduction for A blind single antenna interference cancellation algorithm in MQAM-OFDM systems

Zhenyu Zhou, Takuro Sato

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2 Citations (Scopus)

    Abstract

    In orthogonal frequency division multiplexing (OFDM) based cellular systems, co-channel interference (CCI) from adjacent interfering base stations (BSs) would greatly degrade the bit error rate (BER) performance of cell-border users. In the previous work, a blind single antenna interference cancellation (SAIC) algorithm named least mean square-blind joint maximum likelihood sequence estimation (LMS-BJMLSE) has been proposed. The proposed LMS-BJMLSE algorithm is blind with respect to interfering signals and neither the training sequence (TS) nor pilot signal from interferers is needed. However, the conventional LMS-BJMLSE requires a long training sequence (TS) for channel estimation. In this paper, we propose a TS reduction scheme in which the subcarriers are divided into small groups based on the coherence bandwidth, and the slowest converging subcarrier in each group is identified by exploiting the correlation between the mean-square error (MSE) produced by LMS and the mean-square deviation (MSD) of the desired signal. The identified subcarrier's channel estimate is replaced by the interpolation result using the adjacent subcarriers' channel estimates. Simulation results demonstrate that the proposed algorithm could reduce the required TS length by 80%.

    Original languageEnglish
    Title of host publicationIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
    Pages36-40
    Number of pages5
    DOIs
    Publication statusPublished - 2010
    Event2010 IEEE 21st International Symposium on Personal Indoor and Mobile Radio Communications, PIMRC 2010 - Istanbul
    Duration: 2010 Sep 262010 Sep 30

    Other

    Other2010 IEEE 21st International Symposium on Personal Indoor and Mobile Radio Communications, PIMRC 2010
    CityIstanbul
    Period10/9/2610/9/30

    Fingerprint

    Orthogonal frequency division multiplexing
    Maximum likelihood
    Antennas
    Channel estimation
    Mean square error
    Base stations
    Bit error rate
    Interpolation
    Bandwidth

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

    Cite this

    Zhou, Z., & Sato, T. (2010). Training sequence reduction for A blind single antenna interference cancellation algorithm in MQAM-OFDM systems. In IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC (pp. 36-40). [5671866] https://doi.org/10.1109/PIMRC.2010.5671866

    Training sequence reduction for A blind single antenna interference cancellation algorithm in MQAM-OFDM systems. / Zhou, Zhenyu; Sato, Takuro.

    IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC. 2010. p. 36-40 5671866.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Zhou, Z & Sato, T 2010, Training sequence reduction for A blind single antenna interference cancellation algorithm in MQAM-OFDM systems. in IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC., 5671866, pp. 36-40, 2010 IEEE 21st International Symposium on Personal Indoor and Mobile Radio Communications, PIMRC 2010, Istanbul, 10/9/26. https://doi.org/10.1109/PIMRC.2010.5671866
    Zhou Z, Sato T. Training sequence reduction for A blind single antenna interference cancellation algorithm in MQAM-OFDM systems. In IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC. 2010. p. 36-40. 5671866 https://doi.org/10.1109/PIMRC.2010.5671866
    Zhou, Zhenyu ; Sato, Takuro. / Training sequence reduction for A blind single antenna interference cancellation algorithm in MQAM-OFDM systems. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC. 2010. pp. 36-40
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