J. Semicond. > 2012, Volume 33 > Issue 10 > 105012

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Design and implementation of channel estimation for low-voltage power line communication systems based on OFDM

Zhao Huidong, Hei Yong, Qiao Shushan and Ye Tianchun

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DOI: 10.1088/1674-4926/33/10/105012

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Abstract: An optimized channel estimation algorithm based on a time-spread structure in OFDM low-voltage power line communication (PLC) systems is proposed to achieve a lower bit error rate (BER). This paper optimizes the best maximum multi-path delay of the linear minimum mean square error (LMMSE) algorithm in time-domain spread OFDM systems. Simulation results indicate that the BER of the improved method is lower than that of conventional LMMSE algorithm, especially when the signal-to-noise ratio (SNR) is lower than 0 dB. Both the LMMSE algorithm and the proposed algorithm are implemented and fabricated in CSMC 0.18 μm technology. This paper analyzes and compares the hardware complexity and performance of the two algorithms. Measurements indicate that the proposed channel estimator has better performance than the conventional estimator.

Key words: OFDMPLCchannel estimationtime-domain spreadVLSI

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    Received: 03 December 2014 Revised: 02 May 2012 Online: Published: 01 October 2012

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      Zhao Huidong, Hei Yong, Qiao Shushan, Ye Tianchun. Design and implementation of channel estimation for low-voltage power line communication systems based on OFDM[J]. Journal of Semiconductors, 2012, 33(10): 105012. doi: 10.1088/1674-4926/33/10/105012 ****Zhao H D, Hei Y, Qiao S S, Ye T C. Design and implementation of channel estimation for low-voltage power line communication systems based on OFDM[J]. J. Semicond., 2012, 33(10): 105012. doi: 10.1088/1674-4926/33/10/105012.
      Citation:
      Zhao Huidong, Hei Yong, Qiao Shushan, Ye Tianchun. Design and implementation of channel estimation for low-voltage power line communication systems based on OFDM[J]. Journal of Semiconductors, 2012, 33(10): 105012. doi: 10.1088/1674-4926/33/10/105012 ****
      Zhao H D, Hei Y, Qiao S S, Ye T C. Design and implementation of channel estimation for low-voltage power line communication systems based on OFDM[J]. J. Semicond., 2012, 33(10): 105012. doi: 10.1088/1674-4926/33/10/105012.

      Design and implementation of channel estimation for low-voltage power line communication systems based on OFDM

      DOI: 10.1088/1674-4926/33/10/105012
      • Received Date: 2014-12-03
      • Accepted Date: 2012-04-10
      • Revised Date: 2012-05-02
      • Published Date: 2012-09-10

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