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。
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.
出处
《中兴通讯技术》
2014年第6期12-15,共4页
ZTE Technology Journal
基金
国家高技术研究发展("863")计划(2013AA010502)
国家重点基础研究发展("973")计划(2010CB328303)
国家自然科学基金(61172080)
