Multiple Access Scheme Based on Block Encoding Time Division Multiplexing in an Indoor Positioning System Using Visible Light

被引：46
作者：
Hou, Yinan [1 ]
Xiao, Shilin [1 ]
Zheng, Haifeng [1 ,2 ]
Hu, Weisheng [1 ,3 ]
机构：
[1] Shanghai Jiao Tong Univ, State Key Lab Adv Opt Commun Syst & Networks, Shanghai 200240, Peoples R China
[2] Fuzhou Univ, Coll Phys & Informat Engn, Fuzhou 350116, Peoples R China
[3] Liaocheng Univ, Key Lab Opt Commun Sci & Technol, Liaocheng 252000, Shangdong, Peoples R China
来源：
JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING | 2015年 / 7卷 / 05期
关键词：
Free-space optical communication; Indoor positioning; Multiplexing; Optical communications; Visible light communication (VLC);
D O I：
10.1364/JOCN.7.000489
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
In view of the application of a visible light positioning system in a public indoor environment with numerous light emitting diodes (LEDs), a long delay is one of the main factors that limits the performance of the positioning system with a moving device. To solve this problem, a multiple access scheme based on block encoding time division multiplexing (TDM) is proposed in this paper. In our scheme, nine LEDs compose one block to reduce the system delay. Meanwhile, in order to reduce intercell interference, an extended binary coded decimal code is used to encode signals transmitted by LEDs. The feasibility and performance of the scheme is demonstrated by simulations. The results show that the proposed TDM scheme provides a better performance than the conventional TDM and is more applicable to the accurate positioning of a moving device.
引用
收藏
页码：489 / 495
页数：7
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