文献类型：期刊文献

英文题名：Performance-enhanced indoor MIMO-OFDM visible light communications using individual/joint CAZAC precoding techniques

作者：Chen, Mengru[1];Lu, Huimin[1];Chen, Danyang[1];Jin, Jianli[1];Chen, Ming[2];Wang, Jianping[1]

第一作者：Chen, Mengru

通讯作者：Lu, HM[1]

机构：[1]Univ Sci & Technol Beijing, Sch Comp & Commun Engn, Beijing 100083, Peoples R China;[2]Beijing Union Univ, Smart City Coll, Beijing 100101, Peoples R China

第一机构：Univ Sci & Technol Beijing, Sch Comp & Commun Engn, Beijing 100083, Peoples R China

通讯机构：[1]corresponding author), Univ Sci & Technol Beijing, Sch Comp & Commun Engn, Beijing 100083, Peoples R China.

年份：2020

卷号：59

期号：34

起止页码：10746-10753

外文期刊名：APPLIED OPTICS

收录：;EI(收录号：20205109635311);Scopus(收录号：2-s2.0-85097607753);WOS:【SCI-EXPANDED(收录号:WOS:000595631500015)】；

基金：Key Laboratory of All Optical Network and Advanced Telecommunication Network, Ministry of Education (Beijing Jiaotong University) (AON2019003); National Natural Science Foundation of China (61671055).

语种：英文

外文关键词：Bit error rate - Gain control - Light - MIMO systems - Orthogonal frequency division multiplexing - Signal to noise ratio

摘要：In this paper, efficient individual and joint constant amplitude zero auto-correlation (CAZAC) precoding schemes are proposed to improve the performance of an indoor multiple-input multiple-output-orthogonal frequency division multiplexing (MIMO-OFDM)-based visible light communication (VLC) system. By considering the proposed precoding scheme, a 3 x 3 MIMO-OFDM VLC system with symmetrical and asymmetrical structure is set up, whose peak-to-average-power ratio (PAPR) of transmitted signal, signal-to-noise ratio (SNR), and bit error rate performance are investigated. It is shown that both individual and joint CAZAC precoding schemes can reduce the PAPR of the transmitted signal and make the SNR uniform over data subcarriers, resulting in significant performance improvement compared to the system without precoding. It is demonstrated that there are similar performance improvements for the MIMO-OFDM VLC system using the individual CAZAC preceding and joint CAZAC precoding in a symmetric scenario. At the expense of higher implementation complexity, the joint CAZAC precoding has more performance benefits than the individual CAZAC precoding for the VLC system with asymmetrical MIMO. (C) 2020 Optical Society of America