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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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