一种多孔径接收器的设计及其可见光通信系统

为了研究接收元件方向性和接收器对可见光通信的影响,并解决当前接收器信道增益弱的问题,设计一种基于多孔径接收器的多输入多输出室内可见光通信(visible light communication,VLC)系统.通过光发射器与接收器的关系,提出多孔径接收器,改善信道矩阵条件.该接收器包含8个接收元件,每个接收元件由一个裸片...

Design of amultiple bore diameter receiver and its visible communication system

To study the influence of receiver orientation and receiver on visible light communication, a multiple input multiple output bore-based indoor visible light communication (VLC) system is designed. Firstly, according to the relationship between transmitter and receiver, the multiple-bore receiver is presented to improve the condition of the channel matrix, which is comprised of 8 receiving elements, and each receiving element consists of a bare photo-detector and an aperture above it, The aim is to provide a wide field of view and excellent angle diversity by using a miniaturized planar structure. Then, based on the receiver, using asymmetrically clipped optical orthogonal frequency division multiplexing(ACO-OFDM) to message transmission, a complete multiple input multiple output VLC system is proposed, so as to achieve reliable transport of data streams. Four LEDs are adopted in the simulation experiment. The test data show that, compared with the current excellent receiver designs, bit error rate of the proposed design is lower in different locations, and multiple-stream interference is very low, and the channel gain is greater.