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

Authors

Yanrong Zhai, Hangzhou Dianzi University, University of Wollongong
Jun Tong, University of WollongongFollow
Jiangtao Xi, University of WollongongFollow

RIS ID

135170

Publication Details

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.

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.