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

页码：974 / 977

页数：4

共 18 条

[11] On the Capacity of Intensity-Modulated Direct-Detection Systems and the Information Rate of ACO-OFDM for Indoor Optical Wireless Applications [J].

Li, Xia ;

Vucic, Jelena ;

Jungnickel, Volker ;

Armstrong, Jean .

IEEE TRANSACTIONS ON COMMUNICATIONS, 2012, 60 (03) :799-809

[12] Combining Illumination Dimming Based on Pulse-Width Modulation With Visible-Light Communications Based on Discrete Multitone [J].

Ntogari, G. ;

Kamalakis, T. ;

Walewski, J. W. ;

Sphicopoulos, T. .

JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING, 2011, 3 (01) :56-65

[13] Hybrid Asymmetrically Clipped OFDM-Based IM/DD Optical Wireless System [J].

Ranjha, Bilal ;

Kavehrad, Mohsen .

JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING, 2014, 6 (04) :387-396

[14] An Illumination Perspective on Visible Light Communications [J].

Tsiatmas, Anagnostis ;

Baggen, Constant P. M. J. ;

Willems, Frans M. J. ;

Linnartz, Jean-Paul M. G. ;

Bergmans, Jan W. M. .

IEEE COMMUNICATIONS MAGAZINE, 2014, 52 (07) :64-71

[15] Enhancing the decoding performance of optical wireless communication systems using receiver-side predistortion [J].

Wang, Qi ;

Wang, Zhaocheng ;

Chen, Sheng ;

Hanzo, Lajos .

OPTICS EXPRESS, 2013, 21 (25) :30295-30305

[16] Iterative Receiver for Hybrid Asymmetrically Clipped Optical OFDM [J].

Wang, Qi ;

Wang, Zhaocheng ;

Dai, Linglong .

JOURNAL OF LIGHTWAVE TECHNOLOGY, 2014, 32 (22) :3869-3875

[17] An adaptive scaling and biasing scheme for OFDM-based visible light communication systems [J].

Wang, Zhaocheng ;

Wang, Qi ;

Chen, Sheng ;

Hanzo, Lajos .

OPTICS EXPRESS, 2014, 22 (10) :12707-12715

[18] Performance of dimming control scheme in visible light communication system [J].

Wang, Zixiong ;

Zhong, Wen-De ;

Yu, Changyuan ;

Chen, Jian ;

Francois, Chin Po Shin ;

Chen, Wei .

OPTICS EXPRESS, 2012, 20 (17) :18861-18868

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