摘要
针对速率为100 Mbit/s、偏置电流为0.15 A的使用开关键控调制的可见光通信系统,通过软件仿真和实验验证相结合的方法,研究了调制度对通信系统性能以及照明效果的影响。结果表明,随着调制度的增大,误码率减小,且距离越短,误码率对调制度的变化越敏感。当速率为100 Mbit/s、距离为12.0 m时,在1 W荧光型发光二极管的可见光通信系统中,调制度最小为0.1就可以满足前向纠错误码率门限要求。如果对通信系统的可靠性要求较高,调制度应在0.1和误码率为0所对应的调制度之间选择,且调制度的大小不会对照明效果产生影响。
Aiming at a visible light communication system under the on-off keying(OOK) modulation with a rate of 100 Mbit/s and a bias current of 0.15 A, the influences of modulation degree on the performance of the communication system and the lighting effect are investigated by software simulation combined with experimental verification. The results show that the bit error rate decreases as modulation degree increases. Further, the smaller the distance is, the more sensitive the bit error rate becomes to the change in modulation degree. As for a 100 Mbit/s visible light communication system containing a 1 W phosphor-coated light-emitting diode at a set distance of 12.0 m, the modulation degree should be at least 0.1 to satisfy the threshold requirement of forward error correction. Furthermore, if the communication system requires a high reliability, the modulation degree should be between 0.1 and the modulation degree corresponding to an error rate of 0, and it should have no effect on illumination effect.
作者
靳永超
陈雄斌
毛旭瑞
闵成彧
潘天豪
陈弘达
Jin Yongchao;Chen Xiongbin;Mao Xurui;Min Chengyu;Pan Tianhao;Chen Hongda(School of Microelectronics , University of Chinese Academy of Sciences , Beijing 100049, China;Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences ,Beijing 100049, China;State Key Laboratory of Integrated Optoelectronics , Institute of Semiconductors , Chinese Academy of Sciences ,Beijing 100083, China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2019年第5期372-376,共5页
Chinese Journal of Lasers
基金
国家重点研发计划(2017YFB0403605)
国家自然科学基金(61875183)
关键词
光通信
可见光通信
调制度
误码率
optical communications
visible light communication
modulation degree
bit error rate
