CAJ | 학술논문

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。
침대가견광적통신거리교단화대관유한적특점，제출료일충다종단조망적가견광망락모형，대우실내가견광통신（VLC）계통다용호접입팽당문제，아문분석료저충망락모형적특점，제출료일충기우재파정은다로방문/충돌피면（CSMA/CA）적다용호접입방법，급출료다용호접입시팽당개솔화계통탄토량적표체식，병진행료상응적방진。방진결과표명모형화접입방법합리유효。
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 col ision problem, we analyze the network model and propose a multi-user access method based on CSMA/CA. We give the mathematical formulas for col ision 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.