传统基于阵列的光源布局方式在室内难免存在光照度及系统误码率不均匀现象，为提高系统照度均匀性及通信可靠性，需合理对光源进行优化布局。本文以4 m×4 m×3 m的房间为模型，设计了单LED 阵列+灯带的环形光源布局模型。模型中间采用6×6 LED阵列，阵列内部灯珠之间的距离为0.3 m；四周采用环形灯带形式，灯珠个数为316 个，灯珠之间的距离为0.05 m。仿真结果表明，该模式下系统光照度均值为437.08 lx，光照度均匀性为93.9%，同时，系统误码率均值为2.8716×10^-7。因此，本文所设计的环形光源布局模型兼顾了室内光照度分布的均匀性和通信的可靠性，可同时满足室内照明和通信，为室内可见光通信光源布局提供了一种优化方法。

The traditional layout of light source based on array will inevitably lead to uneven illumination and BER in the room. In order to improve the illumination uniformity and reliability of the system, it is necessary to optimize the layout of the light source reasonably. In this paper, a 4m × 4m × 3 m room is used as the model to design a ring light source layout model with a single-LED array and lamp belts. In this model, the distance between the inner lamps of the 6 x 6 LED array is 0.3 m. The number of surrounding lamp beads is 316 and the distance between the lamps is 0.05 m. The simulation results show that the system illumination is about 437.08 lx and the illumination uniformity is 93.9%. At the same time, the system error rate is about 2.8716×10^-7.The annular light source layout model designed in this paper takes into account the uniformity of indoor illumination distribution and the reliability of communication simultaneously, which can meet the indoor lighting and communication at the same time and also can provide an optimization method for the layout of indoor visible light communication.