室内可见光MIMO通信码间干扰分析与接收视场角优化
发布时间：2019-01-05 04:31
【摘要】：针对可见光MIMO通信过程中多径时延造成的码间干扰对可见光通信系统性能影响问题,采用光线追踪分析方法建立了室内系统模型及码间干扰模型,讨论了多输入多输出的室内通信环境下,不同LED布局下光学天线视场角大小对系统码间干扰及误码率的影响.研究结果表明:当数据传输速率为100Mbit/s时,存在一种LED布局使整个接收平面能满足基本通信所要求的10~(-6)误码率阈值.在此结构的基础上分析可知,随着视场角的逐渐增大,接收平面的盲区会逐渐消失,但系统码间干扰会随之增加.在接收机视场角为43°时,平均信噪比最大并能达到室内最佳覆盖,此时能有效减小多径效应及码间干扰并提高系统传输性能.
[Abstract]:Aiming at the influence of inter-symbol interference caused by multi-path delay in visible MIMO communication on the performance of visible light communication system, the indoor system model and inter-symbol interference model are established by ray tracing analysis method. The influence of the field of view angle of the optical antenna on the inter-symbol interference (ISI) and bit error rate (BER) of the system under the multi-input and multi-output indoor communication environment with different LED configurations is discussed. The results show that when the data transmission rate is 100Mbit/s, there is a LED layout which enables the whole receiving plane to meet the 10 ~ (-6) bit error rate threshold required by the basic communication. Based on the analysis of the structure, the blind area of the receiving plane will disappear gradually with the increasing of the field of view angle, but the system inter-symbol interference will increase. When the field of view angle of the receiver is 43 掳, the average signal-to-noise ratio (SNR) is maximum and the optimal indoor coverage can be achieved, which can effectively reduce the multipath effect and inter-symbol interference (ISI) and improve the transmission performance of the system.
【作者单位】： 中南民族大学电子信息工程学院智能无线通信湖北省重点实验室;
【基金】：国家自然科学基金资助项目(61002013、11147014) 湖北省自然科学基金资助项目(2014CFA051)
【分类号】：TN919.3;TN929.1
本文编号：2401271
[Abstract]:Aiming at the influence of inter-symbol interference caused by multi-path delay in visible MIMO communication on the performance of visible light communication system, the indoor system model and inter-symbol interference model are established by ray tracing analysis method. The influence of the field of view angle of the optical antenna on the inter-symbol interference (ISI) and bit error rate (BER) of the system under the multi-input and multi-output indoor communication environment with different LED configurations is discussed. The results show that when the data transmission rate is 100Mbit/s, there is a LED layout which enables the whole receiving plane to meet the 10 ~ (-6) bit error rate threshold required by the basic communication. Based on the analysis of the structure, the blind area of the receiving plane will disappear gradually with the increasing of the field of view angle, but the system inter-symbol interference will increase. When the field of view angle of the receiver is 43 掳, the average signal-to-noise ratio (SNR) is maximum and the optimal indoor coverage can be achieved, which can effectively reduce the multipath effect and inter-symbol interference (ISI) and improve the transmission performance of the system.
【作者单位】： 中南民族大学电子信息工程学院智能无线通信湖北省重点实验室;
【基金】：国家自然科学基金资助项目(61002013、11147014) 湖北省自然科学基金资助项目(2014CFA051)
【分类号】：TN919.3;TN929.1
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