TY - JOUR
T1 - A joint precoding scheme for indoor downlink multi-user MIMO VLC systems
AU - Zhao, Qiong
AU - Fan, Yangyu
AU - Kang, Bochao
N1 - Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017/11/15
Y1 - 2017/11/15
N2 - In this study, we aim to improve the system performance and reduce the implementation complexity of precoding scheme for visible light communication (VLC) systems. By incorporating the power-method algorithm and the block diagonalization (BD) algorithm, we propose a joint precoding scheme for indoor downlink multi-user multi-input-multi-output (MU-MIMO) VLC systems. In this scheme, we apply the BD algorithm to eliminate the co-channel interference (CCI) among users firstly. Secondly, the power-method algorithm is used to search the precoding weight for each user based on the optimal criterion of signal to interference plus noise ratio (SINR) maximization. Finally, the optical power restrictions of VLC systems are taken into account to constrain the precoding weight matrix. Comprehensive computer simulations in two scenarios indicate that the proposed scheme always has better bit error rate (BER) performance and lower computation complexity than that of the traditional scheme.
AB - In this study, we aim to improve the system performance and reduce the implementation complexity of precoding scheme for visible light communication (VLC) systems. By incorporating the power-method algorithm and the block diagonalization (BD) algorithm, we propose a joint precoding scheme for indoor downlink multi-user multi-input-multi-output (MU-MIMO) VLC systems. In this scheme, we apply the BD algorithm to eliminate the co-channel interference (CCI) among users firstly. Secondly, the power-method algorithm is used to search the precoding weight for each user based on the optimal criterion of signal to interference plus noise ratio (SINR) maximization. Finally, the optical power restrictions of VLC systems are taken into account to constrain the precoding weight matrix. Comprehensive computer simulations in two scenarios indicate that the proposed scheme always has better bit error rate (BER) performance and lower computation complexity than that of the traditional scheme.
KW - Block diagonalization (BD)
KW - Multi-user multi-input multi-output (MU-MIMO)
KW - Power-method
KW - Precoding
KW - Visible light communication (VLC)
UR - http://www.scopus.com/inward/record.url?scp=85026769765&partnerID=8YFLogxK
U2 - 10.1016/j.optcom.2017.07.059
DO - 10.1016/j.optcom.2017.07.059
M3 - 文章
AN - SCOPUS:85026769765
SN - 0030-4018
VL - 403
SP - 341
EP - 346
JO - Optics Communications
JF - Optics Communications
ER -