基于LED自适应照明优化的可见光通信网多域耦合传输技术研究

项目名称： 基于LED自适应照明优化的可见光通信网多域耦合传输技术研究

项目编号： No.61502210

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 自动化技术、计算机技术

项目作者： 鲍煦

作者单位： 江苏大学

项目金额： 20万元

中文摘要： 可见光通信（VLC）具有成本低、带宽大、安全性高和传输速度快等优点，但多用户覆盖困难以及传输时产生的照明质量劣化现象是阻碍其应用的主要问题。本课题拟对功率域、空间域和频率域进行多域频谱资源耦合，在功率域中设计LED正交掩码同时有机融合可见光多波长成像MIMO和OFDMA技术从而实现颜色恒定的可见光通信网多用户高速传输。具体包括：(1)设计多用户传输协议及LED功率正交掩码以实现在数据传输前对用户的定位，并消除传输过程中产生的亮度闪烁及颜色偏移问题；(2)提出用户体验质量（QoE）与VLC网络控制参量间的映射关系，建立以最大化QoE为目标的子载波和可见光波段分配方法，克服VLC小区间的干扰问题；(3)将最大化可见光传输速率的优化目标等效为最优化QoE，设计能耗及QoE均衡优化的室内照明亮度自适应控制技术以解决可见光高速传输与照明亮度调节间的矛盾。

中文关键词： 可见光通信网；多域耦合；照明优化；可见光多用户传输；亮度自适应控制

英文摘要： The merits of visible light communication (VLC) are low cost, large bandwidth, high security and rapid transmission. However, multiple user coverage and illumination deterioration problem are the main drawbacks when generalizing its applications. This project will manage the power domain, space domain and frequency domain for multi-domain spectrum coupling. The LED power orthogonal mask will be designed in the power domain, while merge the VLC imaging MIMO and the OFDMA technology to achieve the multi-user high-speed transmission in VLC network with constant color. The details of the main research contents are as follows: (1) design the multi-user transmission protocol and the LED power orthogonal mask to achieve the users' location before data transmission, and eliminate the light flickering/chromaticity shift problems during the data transmission; (2) propose the mapping relationship between the user's quality of experience (QoE) and VLC network control parameters, establish the resource allocation algorithm between the subcarriers and the VLC wavelength to maximize the user QoE for overcoming the interferences among the VLC cells; (3) transfer the optimization target of maximizing the VLC transmission rate to optimize the users' QoE, design the lighting brightness adaptive control technology based on optimizing the energy consumption and QoE to solve the contradiction between high speed VLC transmission and the brightness adjustment.

英文关键词： visible light communication network;multi-domain coupling;illumination optimization;VLC multi-user transmission;adaptive brightness control