基于多进制检测的可见光多层成像通信系统  

Multi-layer optical camera communication system based on M-ary detection

作　　者：李湘东 刘洛琨[1] LI Xiangdong;LIU Luokun(Institute of Information System Engineering,Information Engineering University,Zhengzhou Henan 450001,China)

机构地区：[1]信息工程大学信息系统工程学院,河南郑州450001

出　　处：《太赫兹科学与电子信息学报》2017年第4期607-612,共6页Journal of Terahertz Science and Electronic Information Technology

基　　金：国家863计划资助项目(2013AA013603)

摘　　要：为适应多用户需求,提出了一种基于多进制检测的可见光多层成像通信系统。依不同优先权将发送信息加载在分集程度不同的各层发送单元上。优先权越高,分集程度越高,信息的鲁棒性相对较高但传输速率较低;相反的,优先权越低,复用程度越高,信息的传输速率相对较高但鲁棒性较低。结合系统模型,利用基于最大似然检测的多进制检测算法实现了信息提取。最后,通过仿真实验验证了系统的可行性。在保证系统检测性能和算法复杂度相对较低的同时,实现了多层成像通信系统的稳定传输。A multi-layer Optical Camera Communication(OCC)system based on M-ary detection is proposed to adapt to the needs of multiuser.According to different priorities,the message is loaded on each layer which has diverse degrees of diversity.The higher-priority data is transmitted in higher diversity mode with higher robustness but lower data rate,whereas the lower-priority data is sent using higher multiplexing scheme with higher data rate but lower robustness.Combined with the OCC system model,the message can be detected by using an M-ary detection algorithm based on Maximum Likelihood(ML)detection.Finally,computer simulations verify the system feasibility.With reliable and lowcomplexity detection,the multi-layer OCC transmission system can be achieved stably.

关 键 词：光成像通信 信息叠加 多进制检测 最大似然检测 

分 类 号：TN929.1[电子电信—通信与信息系统]