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Oblique projection-based interference suppression for MIMO power line communication

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Abstract

In this paper, it is proved that in multi-conductor power line communication (PLC), spatial multiplexing can be achieved not only in different transmission modes but also in a same transmission mode, which means that spatial multiplexing technique can suppress the interference from any transmission modes. With this conclusion, a co-channel interference (CCI) suppression method based on oblique projection is proposed for multi-conductor PLC. In this method, the oblique projection operator which maps the received signal to the signal space along the interference space is estimated based on second-order statistics of the received data, and then the CCI can be suppressed by the oblique projection operator. The simulation results reveal the validity of the proposed method.

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Funding

This work was supported by the National Natural Science Foundation of China (Nos. 61771091, 61871066), National High Technology Research and Development Program (863 Program) of China (No. 2015AA016306), Natural Science Foundation of Liaoning Province of China (No. 20170540159), and Fundamental Research Funds for the Central Universities of China (No. DUT17LAB04).

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Authors and Affiliations

  1. School of Information and Communication Engineering, Dalian University of Technology, Dalian, 116023, China

    Xiaoyu Hu, Zhe Chen & Fuliang Yin

  2. Department of Computer Science, University of Southern Indiana, Evansville, IN, 47712, USA

    Gongjun Yan & Gary Black

Authors
  1. Xiaoyu Hu
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  2. Zhe Chen
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  3. Fuliang Yin
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  4. Gongjun Yan
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  5. Gary Black
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Correspondence to Fuliang Yin.

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Hu, X., Chen, Z., Yin, F. et al. Oblique projection-based interference suppression for MIMO power line communication. Ann. Telecommun. 74, 211–221 (2019). https://doi.org/10.1007/s12243-018-0667-y

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  • DOI: https://doi.org/10.1007/s12243-018-0667-y

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