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A robust and secure time-domain ICI canceller for OFDM based ubiquitous systems in time-varying multipath channels

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Abstract

A robust and secure time-domain cancellation is proposed for inter-carrier interference (ICI) reduction in OFDM systems for ubiquitous environments. To cope with the problem of the conventional time-domain canceller, which does not work in deep fades, simple repetition (de)coding and modulation order increasing techniques are exploited in our proposal. The approximated repetition decoding provides reliable symbols in the regeneration operation, and the increased modulation order maintains the spectral efficiency. Simulation results indicate that the proposed method using 16QAM significantly improves the BER performance compared with the conventional method using QPSK, while the spectral efficiency is maintained. Moreover, the proposed method using 64QAM concurrently improves both the BER performance and the spectral efficiency.

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Authors and Affiliations

  1. School of Electrical and Electronic Engineering, Yonsei University, Seoul, 120-749, South Korea

    Jeong-Wook Seo & Dong-Ku Kim

  2. Department of Computer Science and Communication Engineering, Kyushu University, Fukuoka, 819-0395, Japan

    Sang-Soo Yeo

  3. Department of Computer Engineering, Kyungnam University, Masan, Kyongnam, 631-701, South Korea

    Kyoo Seok Park

  4. Department of Business Administration, Daejin University, Pocheon, Gyeonggi, 487-711, South Korea

    Hang Bae Chang

  5. Department of Computer Science and Communication Engineering, Sunchon National University, Sunchon, Jeollanam, 540-742, South Korea

    Sung-Eon Cho

Authors
  1. Jeong-Wook Seo
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  2. Sang-Soo Yeo
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  3. Kyoo Seok Park
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  4. Hang Bae Chang
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  5. Sung-Eon Cho
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  6. Dong-Ku Kim
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Corresponding author

Correspondence to Dong-Ku Kim.

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Seo, JW., Yeo, SS., Park, K.S. et al. A robust and secure time-domain ICI canceller for OFDM based ubiquitous systems in time-varying multipath channels. J Supercomput 45, 29–43 (2008). https://doi.org/10.1007/s11227-008-0177-1

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  • DOI: https://doi.org/10.1007/s11227-008-0177-1

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