This article is aimed at designing positioning system using visible light communication technology by incorporating three different diversity schemes, namely, transmit diversity (TD), receive diversity (RD), and angle diversity. For the TD, multiple transmitters with single receiver (MISO) is used to obtain the target location using frequency division multiplexing (FDM) and variable phase approach. To deploy RD, the proposed system comprises multiple receivers and single transmitter (SIMO). Only one transmitter's absolute coordinates are required to obtain the location coordinates of optical receivers. FDM and time division multiplexing access schemes have been utilized to transmit the unique signals by light‐emitting diodes (LEDs). To implement angle diversity, orientation of transmitter and receiver is considered for positioning purposes. Under this environment, there is no constraint for the LEDs to be installed on ceiling; they can be at any point within the room or at different heights. The information regarding spherical coordinates (representing the orientation) of LEDs (single or multiple) is used to determine the coordinates or the orientation of receiver having multiple or single photodiodes, respectively. Under multiple orientations, this system is analyzed with both scenarios, that is, MISO and SIMO.

中文翻译：

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基于三边测量的室内可见光通信系统工程技术

本文旨在通过结合三种不同的分集方案（即发射分集（TD），接收分集（RD）和角度分集）来设计使用可见光通信技术的定位系统。对于TD，使用频分复用（FDM）和可变相位方法使用具有单个接收器（MISO）的多个发送器来获取目标位置。为了部署RD，建议的系统包括多个接收器和单个发射器（SIMO）。只需一个发射机的绝对坐标即可获得光接收机的位置坐标。FDM和时分多路复用访问方案已被用于通过发光二极管（LED）传输唯一信号。为了实现角度分集，出于定位目的考虑了发射机和接收机的定向。在这种环境下，将LED安装在天花板上没有任何限制。它们可以位于房间内的任何位置，也可以位于不同的高度。关于LED（单个或多个）的球坐标（代表方向）的信息分别用于确定具有多个或单个光电二极管的接收器的坐标或方向。在多个方向上，将同时使用MISO和SIMO两种方案来分析此系统。