红外与激光工程, 2018, 47 (8): 0822001, 网络出版: 2018-08-29   

兼顾照明的可见光MIMO通信系统模型

Visible light MIMO communication system model considering lighting
作者单位
西安工业大学 电子信息工程学院, 陕西 西安 710021
摘要
可见光通信要同时兼顾照明和通信的双重作用, 因此需要同时考虑光源布局及通信可靠性问题。为保证国际照明标准, 在总LED灯珠不变的情况下, 首先对光源布局进行了分析并数值计算了在同样功耗条件下3个及4个阵列布局方式的照度分布及均匀性。其次, 为了提高多阵列可见光通信系统有效性及可靠性, 将MIMO技术应用于VLC中, 采用STBC编码数值计算了多阵列布局方式下系统可靠性。结果表明, 在同样功耗条件下, 4个阵列的MIMO系统照度均匀性较3个阵列提高了20.9%, 当误码率为10-4时, 4×1系统较3×1系统的误码性能大约可提高2 dB, 4×2与3×2系统分别较4×1与3×1系统误码性能提高了6 dB与5 dB。
Abstract
Visible light communication has a double function of illumination and communication, so it is needed to consider the light source layout and communication reliability issues. In order to ensure the international lighting standard, in the constant of the total LED lamp beads, firstly, the layout of the light source was analyzed, the illumination distribution and uniformity of the three and four array layouts under the same power consumption were numerically calculated. Secondly, in order to improve the effectiveness and reliability of multi-array visible-light communication system, MIMO technology was applied to VLC, and STBC coding was used to calculate the reliability of multi-array layout. The results show that the uniformity of illumination of the four arrays is 20.9% higher than that of the three arrays under the same power consumption. When the bit error rate is 10-4, the error performance of 4×1 system is improved by about 2 dB compared with the 3×1 system, the error performance of the 4×2 and 3×2 systems are increased by 6 dB and 5 dB compared with the 4×1 and 3×1 systems.

朱彤, 赵黎, 刘智港, 张峰. 兼顾照明的可见光MIMO通信系统模型[J]. 红外与激光工程, 2018, 47(8): 0822001. Zhu Tong, Zhao Li, Liu Zhigang, Zhang Feng. Visible light MIMO communication system model considering lighting[J]. Infrared and Laser Engineering, 2018, 47(8): 0822001.

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