室内VLC系统中的非成像MIMO信道建模及传输技术研究

Recently, visible light communication (VLC) is growing up with the development of LED lighting technology, which is considered as an important direction of future optical wireless communication. To futher improve the date transmission rate, VLC system based on the non-imaging multiple input multiple output (MIMO) technology is studied in this project, in which the orthogonal frequency division multiplexing (OFDM) modulation is introduced. Firstly, VLC MIMO channel is modeled in theory, with the emphasis on analyzing the differences between VLC MIMO channel and RF wireless communication MIMO channel. Then the MIMO transmission scheme is designed to fit the VLC MIMO channel characteristics well. The research in this project provides the theories and performance references for future indoor high speed VLC, as a result, it has important theoretical significance and potential value of engineering application.

可见光通信（VLC）是近年来随LED照明技术而兴起的一种新兴通信技术，也是未来无线光通信的一个重要方向。为进一步提高VLC系统的数据传输速率，本项目围绕基于非成像多输入多输出（MIMO）技术，结合正交频分复用调制方式的VLC系统展开研究。首先从理论上对VLC MIMO信道进行建模与分析，重点探讨VLC MIMO信道与射频无线通信MIMO信道的差异性，并以此为切入点，构造符合VLC MIMO信道特性的MIMO传输方案。本项目的研究为未来室内VLC的高速通信提供理论支撑和性能参考，故具有重要的理论意义和潜在的工程应用价值。

可见光通信（VLC）是近年来随LED照明技术而兴起的一种新兴通信技术，也是未来无线光通信的一个重要方向。本项目以多输入多输出（MIMO） VLC系统为研究对象，目的在于不断提高系统传输速率，改善传输误码率（BER）性能。从理论对VLC MIMO信道进行建模，并对信道相关性进行分析。研究不同信道相关性下的MIMO传输方案，并提出一种MIMO切换算法。研究不同MIMO模式的自适应传输方案，并提出一种自适应的MIMO切换算法。理论研究成果为未来室内VLC的高速通信提供理论支撑和性能参考，故具有重要的理论意义和潜在的工程应用价值。