200 Mb/s visible optical wireless transmission based on NRZ–OOK modulation of phosphorescent white LED and a pre-emphasis circuit  被引量:7

200 Mb/s visible optical wireless transmission based on NRZ–OOK modulation of phosphorescent white LED and a pre-emphasis circuit

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作  者:李洪磊 陈雄斌 郭俊清 唐丹颖 黄北举 陈弘达 

机构地区:[1]State Key Laboratory of Integrated Optoelectronics,Institute of Semiconductors,Chinese Academy of Sciences

出  处:《Chinese Optics Letters》2014年第10期16-19,共4页中国光学快报(英文版)

基  金:supported by the National "973" Program of China(Nos.2013CB329205 and 2011CBA00608);the National "863" Program of China(Nos.2013AA013602,2013AA013603,2013AA03A104,and 2013AA031903);the National Natural Science Foundation of China(Nos.61036002 and 61178051)

摘  要:We present a high-speed visible light communication (VLC) link that uses a commercially available phos- phorescent white light-emitting diode (LED). Such devices have few megahertz bandwidth due to the slow response of phosphorescent component, which severely limit the transmission data rate of VLC system. We propose a simple pre-emphasis circuit. With blue-filtering and the pre-emphasis circuit, the bandwidth of VLC system can be enhanced from 3 to 77.6 MHz, which allows non-return-to-zero on-off-keying (NRZ- OOK) data transmission up to 200 Mb/s with the bit error ratio of 5.3 × 10-7 which is below 10-6. The VLC link operates at the room illumination level of -1000 lx at 1.1 m range using a single 1 W white LED.We present a high-speed visible light communication (VLC) link that uses a commercially available phos- phorescent white light-emitting diode (LED). Such devices have few megahertz bandwidth due to the slow response of phosphorescent component, which severely limit the transmission data rate of VLC system. We propose a simple pre-emphasis circuit. With blue-filtering and the pre-emphasis circuit, the bandwidth of VLC system can be enhanced from 3 to 77.6 MHz, which allows non-return-to-zero on-off-keying (NRZ- OOK) data transmission up to 200 Mb/s with the bit error ratio of 5.3 × 10-7 which is below 10-6. The VLC link operates at the room illumination level of -1000 lx at 1.1 m range using a single 1 W white LED.

关 键 词:Bandwidth Data communication systems Detector circuits LIGHT Light emission Light transmission Optical communication PHOSPHORESCENCE Wave transmission 

分 类 号:TN929.1[电子电信—通信与信息系统]

 

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