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Precoder Design for MIMO Visible Light Communications with Decision-Feedback Receivers

Journal Article


Abstract


  • Decision-feedback equalization is considered for point-to-point multiple-input multiple-output visible light communication systems. Based on the geometric mean decomposition (GMD) and uniform channel decomposition (UCD), two precoders under the signal non-negativity and total average power constraints are designed for such systems. The GMD scheme can decompose the channel into multiple parallel sub-channels with equal gains. The UCD scheme further improves performance through power allocation. Simulation results of bit-error-rate and capacity are presented. It is shown that the proposed schemes can outperform conventional linear designs and the UCD scheme performs better than the GMD scheme.

Publication Date


  • 2019

Citation


  • Y. Zhai, J. Tong & J. Xi, "Precoder Design for MIMO Visible Light Communications with Decision-Feedback Receivers," IEEE Photonics Technology Letters, vol. 31, (7) pp. 521-524, 2019.

Scopus Eid


  • 2-s2.0-85064392160

Number Of Pages


  • 3

Start Page


  • 521

End Page


  • 524

Volume


  • 31

Issue


  • 7

Place Of Publication


  • United States

Abstract


  • Decision-feedback equalization is considered for point-to-point multiple-input multiple-output visible light communication systems. Based on the geometric mean decomposition (GMD) and uniform channel decomposition (UCD), two precoders under the signal non-negativity and total average power constraints are designed for such systems. The GMD scheme can decompose the channel into multiple parallel sub-channels with equal gains. The UCD scheme further improves performance through power allocation. Simulation results of bit-error-rate and capacity are presented. It is shown that the proposed schemes can outperform conventional linear designs and the UCD scheme performs better than the GMD scheme.

Publication Date


  • 2019

Citation


  • Y. Zhai, J. Tong & J. Xi, "Precoder Design for MIMO Visible Light Communications with Decision-Feedback Receivers," IEEE Photonics Technology Letters, vol. 31, (7) pp. 521-524, 2019.

Scopus Eid


  • 2-s2.0-85064392160

Number Of Pages


  • 3

Start Page


  • 521

End Page


  • 524

Volume


  • 31

Issue


  • 7

Place Of Publication


  • United States