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

• 作者: Siqiao Li Tiantian Zhang Yaojun Qiao Ji Zhou
• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2021,（4）
• 所属期刊栏目: Fiber Optics and Optical Communications
• 页码范围: 1-6
• 页数: 6页
• 语种: 英文
• DOI: 10.3788/COL202119.040601

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 asymmet-rically 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 perfor-mance.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.