当前位置:
X-MOL 学术
›
J. Lightw. Technol.
›
论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Capacity and Optimum Signal Constellations for VLC Systems
Journal of Lightwave Technology ( IF 4.7 ) Pub Date : 2020-04-15 , DOI: 10.1109/jlt.2020.2971273 Linqiong Jia , Feng Shu , Nuo Huang , Ming Chen , Jiangzhou Wang
Journal of Lightwave Technology ( IF 4.7 ) Pub Date : 2020-04-15 , DOI: 10.1109/jlt.2020.2971273 Linqiong Jia , Feng Shu , Nuo Huang , Ming Chen , Jiangzhou Wang
In this article, the capacity of the point-to-point VLC system is investigated by means of a functional analysis subjected to amplitude constraint and average intensity constraint. It is proved that the capacity can be achieved by a unique probability density function (PDF). The necessary and sufficient condition for the capacity-achieving PDF is derived by the functional optimization theorem. Moreover, the capacity-achieving PDF is proved to be discrete and finite. Based on these properties, the capacity-achieving constellation optimization problems under amplitude constraint and average intensity constraint is formulated and an algorithm is proposed to solve the corresponding problem. To apply simple adaptive modulation in practical VLC systems, constellation optimization problem subject to an additional equal probability constraint is formulated and solved by maximizing the mutual information as well.
中文翻译:
VLC 系统的容量和最佳信号星座
在本文中,通过受幅度约束和平均强度约束的功能分析,研究了点对点 VLC 系统的容量。证明容量可以通过唯一的概率密度函数(PDF)来实现。容量实现PDF的充要条件是由函数优化定理推导出来的。此外,容量实现的 PDF 被证明是离散的和有限的。基于这些性质,提出了幅度约束和平均强度约束下的容量实现星座优化问题,并提出了求解相应问题的算法。为了在实际的 VLC 系统中应用简单的自适应调制,
更新日期:2020-04-15
中文翻译:
VLC 系统的容量和最佳信号星座
在本文中,通过受幅度约束和平均强度约束的功能分析,研究了点对点 VLC 系统的容量。证明容量可以通过唯一的概率密度函数(PDF)来实现。容量实现PDF的充要条件是由函数优化定理推导出来的。此外,容量实现的 PDF 被证明是离散的和有限的。基于这些性质,提出了幅度约束和平均强度约束下的容量实现星座优化问题,并提出了求解相应问题的算法。为了在实际的 VLC 系统中应用简单的自适应调制,