Asymmetrical Hybrid Optical OFDM for Visible Light Communications With Dimming Control

被引：98
作者：
Wang, Qi [1 ]
Wang, Zhaocheng [1 ]
Dai, Linglong [1 ]
机构：
[1] Tsinghua Univ, Dept Elect Engn, Tsinghua Natl Lab Informat Sci & Technol, Beijing 100084, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2015年 / 27卷 / 09期
关键词：
Orthogonal frequency division multiplexing (OFDM); visible light communication (VLC); dimming control; light emitting diode (LED); SCHEME; TRANSMISSION;
D O I：
10.1109/LPT.2015.2404972
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This letter proposes an asymmetrical hybrid optical orthogonal frequency division multiplexing (AHO-OFDM) scheme for dimmable visible light communication systems. In the proposed scheme, either asymmetrically clipped optical OFDM (ACO-OFDM) or pulse-amplitude-modulated discrete multitone (PAM-DMT) signal is inverted and then both the signals are combined for transmission, where pulsewidth modulation is no longer required for dimming control. The power of ACO-OFDM and PAM-DMT signals is adjusted so that the amplitude of the combined AHO-OFDM signal is asymmetrical, which could utilize all the available subcarriers as well as the entire dynamic range of light-emitting diodes with various dimming levels. Simulation results show that the proposed scheme could achieve a wide dimming range with a small throughput fluctuation.
引用
收藏
页码：974 / 977
页数：4
相关论文
共 18 条
[1]   Power efficient optical OFDM [J].
Armstrong, J ;
Lowery, AJ .
ELECTRONICS LETTERS, 2006, 42 (06) :370-372
[2]   OFDM for Optical Communications [J].
Armstrong, Jean .
JOURNAL OF LIGHTWAVE TECHNOLOGY, 2009, 27 (1-4) :189-204
[3]   A Gigabit/s Indoor Wireless Transmission Using MIMO-OFDM Visible-Light Communications [J].
Azhar, Ahmad Helmi ;
Tuan-Anh Tran ;
O'Brien, Dominic .
IEEE PHOTONICS TECHNOLOGY LETTERS, 2013, 25 (02) :171-174
[4]   Energy-Efficient Brightness Control and Data Transmission for Visible Light Communication [J].
Din, Irfanud ;
Kim, Hoon .
IEEE PHOTONICS TECHNOLOGY LETTERS, 2014, 26 (08) :781-784
[5]   Comparison of ACO-OFDM, DCO-OFDM and ADO-OFDM in IM/DD Systems [J].
Dissanayake, Sarangi Devasmitha ;
Armstrong, Jean .
JOURNAL OF LIGHTWAVE TECHNOLOGY, 2013, 31 (07) :1063-1072
[6]   Visible Light Communication: Opportunities, Challenges and the Path to Market [J].
Jovicic, Aleksandar ;
Li, Junyi ;
Richardson, Tom .
IEEE COMMUNICATIONS MAGAZINE, 2013, 51 (12) :26-32
[7]   A Coding Scheme for Visible Light Communication With Wide Dimming Range [J].
Kim, Jinwoo ;
Park, Hyuncheol .
IEEE PHOTONICS TECHNOLOGY LETTERS, 2014, 26 (05) :465-468
[8]   Modulations for Visible Light Communications With Dimming Control [J].
Lee, Kwonhyung ;
Park, Hyuncheol .
IEEE PHOTONICS TECHNOLOGY LETTERS, 2011, 23 (16) :1136-1138
[9]   PAM-DMT for Intensity-Modulated and Direct-Detection Optical Communication Systems [J].
Lee, Sian C. Jeffrey ;
Randel, Sebastian ;
Breyer, Florian ;
Koonen, Antonius M. J. .
IEEE PHOTONICS TECHNOLOGY LETTERS, 2009, 21 (23) :1749-1751
[10]  
Li X, 2007, IEEE ICC, P2128
12