CIF: Small: Collaborative Research: Interference Management for Visible Light Communications via Poisson Model

可见光通信（VLC）正在成为一种可行的替代无线传输技术，可以潜在地缓解频谱稀缺问题。VLC使用诸如发光二极管（LED）的普通光源作为通信介质，并且在用于数据传输的光源之上叠加高频开/关操作。与无线电通信相比，VLC的优势包括带宽更宽几个数量级，监管限制很少，无处不在的光源和更高的传输安全性。物理层VLC设计中的主要挑战之一是由于从常规光源发射的光的漫射而导致的多个源的同时传输所引起的干扰问题。虽然高斯模型的干扰管理（对强背景光噪声状态有效）相对较好地理解，但泊松模型（对低背景光噪声状态有效）的干扰管理大多未被探索。该项目将设计新的干扰管理技术VLC在泊松制度，分析相应的传输速率/吞吐量VLC，并开发信息理论的方法来表征这些传输速率的基本通信限制。预计该研究将在应用和理论上做出实质性贡献。在应用方面，预计该项目将大大提高我们对VLC干扰管理的理解，并为设计高吞吐量和资源高效的VLC网络提供重要的指导方针。在理论层面上，该项目将开发新的随机微积分和信息理论工具，以促进我们对泊松信道的理解。PI也将利用这个项目作为一个很好的平台，吸引和培训来自不同背景的学生。

Visible light communication (VLC) is emerging as a viable alternative wireless transmission technology that could potentially alleviate the spectrum scarcity problem. VLC uses ordinary light sources such as light emitting diodes (LEDs) as the communication medium, and superposes a high frequency on/off operation on top of light sources for data transmissions. Compared to radio communications, the advantages of VLC include several orders broader in bandwidth, very little regulatory restrictions, ubiquitous light sources, and higher level of security for transmissions. One of the main challenges in the design of VLC at the physical layer is the issue of interference caused by simultaneous transmissions of multiple sources due to diffusion of lights emitted from regular light sources. While interference management for the Gaussian model (valid for the strong background light noise regime) is relatively well understood, it is mostly unexplored for the Poisson model (valid for the low background light noise regime). This project will design novel interference management techniques for VLC in the Poisson regime, analyze the corresponding transmission rates/throughputs for VLC, and develop information theoretic methodologies to characterize the fundamental communication limits on these transmission rates. The proposed research is expected to make substantial contributions to both applications and theory. On the application side, this project is anticipated to substantially advance our understanding of interference management for VLC, and provide important guidelines for designing high throughput and resource efficient VLC networks. On the theoretical level, the project will develop new stochastic calculus and information theoretic tools to advance our understanding of Poisson channels. The PIs will also use this project as a great platform to attract and train students from diverse backgrounds.