考虑节点安全的可见光通信系统设计

Design of visible light communication system considering node security

传统无线通信技术存在抗干扰能力低、误码率高的问题,提出考虑节点安全的可见光通信系统设计。通过脉冲带宽调整方法设计系统的发射部分和接收部分,得到系统需要设定固定的取值,在此基础上,采用改进VLC编码技术分析LED照明光源布局和阵列电路,利用光源布局方式为系统制动指定的驱动电路,实现考虑节点安全的可见光通信系统设计。实验结果表明,在不同信噪比与LED功率的实验环境下,改进的VCL编码方法平均误码率分别为0. 12%与0. 25%;而传输速率平均为3. 05 bit/s。能够提升系统整体的抗干扰能力,能够有效提高通信速率同时降低误码率。

Compared with the traditional wireless communication technology,the new wireless communication technology is more in line with the needs of the development of the network. It has dual functions of lighting and com- munication,and has been widely concerned for its advantages such as not using radio spectrum,no electromagnetic interference and so on. Considering the security problem of the nodes,by means of adjusting the pulse bandwidth,the STM32 is set as the core circuit breaker,the VLC coding technology is improved in the system,and the layout of the LED lighting source and the array circuit are designed to meet the basic communication needs of the system and ensure the safety of the nodes. The light source layout is used to specify the driving circuit for the braking of the system to en- sure the wide coverage of the light and complete the whole system. The experimental results show that the designed system can improve the overall anti-jamming ability of the system,and can effectively improve the communication rate and reduce the bit error rate ( BER).