一种基于CSMA/CA的VLC系统多用户接入方法研究

发布时间:2023-01-10 作者:尚韬,江涛,张颖 阅读量:

[摘要] 针对可见光的通信距离较短和带宽有限的特点,提出了一种多终端组网的可见光网络模型,对于室内可见光通信(VLC)系统多用户接入碰撞问题,我们分析了这种网络模型的特点,提出了一种基于载波侦听多路访问/冲突避免(CSMA/CA)的多用户接入方法,给出了多用户接入时碰撞概率和系统吞吐量的表达式,并进行了相应的仿真。仿真结果表明模型和接入方法合理有效。

[关键词] 室内可见光通信;多用户接入;载波侦听多路访问/冲突避免

[Abstract] Visible light is only used to communicate over a short distance, and the bandwidth is limited. In this paper, we propose a network model based on multi-terminal networking. To address the multi-user access collision problem, we analyze the network model and propose a multi-user access method based on CSMA/CA. We give the mathematical formulas for collision probability and system throughput and run corresponding simulations. The results show that multi-user access based on CSMA/CA is a reasonable and effective method.

[Keywords] indoor VLC; multi-users access; CSMA/CA