On the Capacity of Intensity-Modulation Direct-Detection Gaussian Optical Wireless Communication Channels: A Tutorial
On the Capacity of Intensity-Modulation Direct-Detection Gaussian Optical Wireless Communication Channels: A Tutorial
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DOI：
10.1109/comst.2021.3120087
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发表时间：
2020-11
影响因子：
35.6
通讯作者：
Anas Chaaban;Z. Rezki;Mohamed-Slim Alouini
中科院分区：
文献类型：
--
作者：
Anas Chaaban;Z. Rezki;Mohamed-Slim Alouini
采用强度调制和直接检测（IM/DD）的光无线通信（OWC）具有一个信道模型，该模型由于对信道输入的约束而具有独特的特征。本教程的目的是概述与输入无关的高斯噪声作为OWC信道的模型的IM/DD信道的容量的结果。它为读者提供了一个切入点的主题，并强调了在这一领域的一些主要贡献。它首先讨论了信道模型以及IM/DD高斯信道模型是如何产生的，此外还解释了输入约束。然后讨论了单输入单输出信道的容量、容量的计算、容量界和容量的渐近结果。然后，它扩展到多输入多输出设置的讨论，并审查该信道模型的容量界限。最后，它讨论了多用户信道建模为一个广播信道（下行链路）或多址信道（上行链路），其相关的容量界限。
Optical wireless communication (OWC) using intensity-modulation and direct-detection (IM/DD) has a channel model which possesses unique features, due to the constraints imposed on the channel input. The aim of this tutorial is to overview results on the capacity of IM/DD channels with input-independent Gaussian noise as a model of OWC channels. It provides the reader with an entry point to the topic, and highlights some major contributions in this area. It begins with a discussion on channel models and how this IM/DD Gaussian channel model comes about, in addition to an explanation of input constraints. Then, it discusses the capacity of the single-input single-output channel, its computation, and capacity bounds and asymptotic capacity results. Then, it extends the discussion to the multiple-input multiple-output setup, and reviews capacity bounds for this channel model. Finally, it discusses multi-user channels modelled as a broadcast channel (downlink) or a multiple-access channel (uplink), with their associated capacity bounds.