Dimming control scheme based on hybrid LACO-SCFDM for visible light communications  

作　　者：Siqiao Li Tiantian Zhang Yaojun Qiao Ji Zhou 李思桥;张甜甜;乔耀军;周骥(Beijing Key Laboratory of Space-Ground Interconnection and Convergence,School of Information and Communication Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China;Institute of Electronic and Information Industry,China Center for Information Industry Development,Beijing 100876,China;Department of Electronic Engineering,College of Information Science and Technology,Jinan University,Guangzhou 510632,China)

机构地区：[1]Beijing Key Laboratory of Space-Ground Interconnection and Convergence,School of Information and Communication Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China [2]Institute of Electronic and Information Industry,China Center for Information Industry Development,Beijing 100876,China [3]Department of Electronic Engineering,College of Information Science and Technology,Jinan University,Guangzhou 510632,China

出　　处：《Chinese Optics Letters》2021年第4期1-6,共6页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No. 61771062);the Fund of the StateKeyLaboratoryofIPOC(BUPT),China (No. IPOC2018ZT08)。

摘　　要：This paper proposes a hybrid layered asymmetrically clipped optical(HLACO) single-carrier frequency-division multiplexing(SCFDM) scheme for dimmable visible light communication. It designs a signal structure that combines layered asymmetrically clipped optical(LACO)-SCFDM and negative LACO-SCFDM in proportion for improving the inherent weaknesses of orthogonal frequency-division multiplexing(OFDM)-based dimmable schemes and further enhancing the system performance. Compared to the HLACO-OFDM-based dimming scheme, it obtains a lower bit error ratio and enables efficient communication over broader dimming range. Its spectral efficiency realizes 2.875 bit·s^(-1)·Hz^(-1) within the dimming range of 30%–70%, and the attainable average spectral efficiency gains exceed at least 19.21% compared to other traditional dimmable schemes.

关 键 词：dimming control single-carrier frequency-division multiplexing visible light communication spectral efficiency COMPLEXITY 

分 类 号：TN929.1[电子电信—通信与信息系统]