基于分组统计可调光编码的LED通信系统研究
首发时间:2015-01-12
摘要:随着LED灯室内可见光通信技术的不断发展,室内可见光通信的各个环节都被广泛关注并进行了深入的研究,由于LED灯在可见光通信系统中即作为一种照明设备同时又为系统的信号源,因此本文针对LED灯光在各种亮度环境下都可以正常通信的问题,提出一种基于分组统计的信道编码方案,主要是通过概率思想来改变原数据流中高低电位的比例来实现调光,并对各种亮度情况下的系统误码率进行分析,结果显示在基于分组统计编码的思想下进行调光可以让LED灯在不同亮度环境下都可以保持很好的通信性能。并在此条件下将NRZ-OOK,RZ-OOK,PWM调光的性能进行仿真对比。
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Research of group statistics dimmable encoding technology for LED communication
Abstract:With the development of LED indoor visible light communication , all aspects of indoor visible light communication have been widespread concern and conducted in-depth research, the LED lights in the visible light communication system that is used as a lighting system at the same time as the signal source.Therefore this paper, LEDs are normal communication problems in a variety of light conditions, proposed a group statistical channel coding scheme, mainly to change the ratio of the original data stream level probabilistic thinking through the potential to achieve dimming, BER and various brightness cases to analyze. The results display in the idea of group statistical coding dimming allows LED lights in different light conditions can maintain good communication performance. And NRZ-OOK, RZ-OOK, PWM dimming performance simulation are compared with group statistics dimmable code.
Keywords: Packet statistics visible light communication code dimming LED
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No.4626799102847814****
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