Constellation Collaborated OFDM for Visible Light Communication Systems

被引：7

作者：

Zhang, Dong-Fang ^{[1
]}

Zhu, Yi-Jun ^{[1
]}

Zhang, Jian-Kang ^{[2
]}

Zhang, Yan-Yu ^{[1
]}

机构：

[1] Zhengzhou Informat Sci & Technol Inst, Dept Commun Engn, Zhengzhou 450002, Peoples R China

[2] McMaster Univ, Dept Elect & Comp Engn, Hamilton, ON L8S 4K1, Canada

来源：

IEEE COMMUNICATIONS LETTERS | 2014年 / 18卷 / 06期

基金：

美国国家科学基金会;

关键词：

Visible light communication (VLC); modulation bandwidth; low-pass frequency-selective fading channel; constellation collaborated orthogonal frequency division multiplexing (OFDM); uniquely factorable constellation pairs (UFCPs);

D O I：

10.1109/LCOMM.2014.2318318

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

In visible light communication (VLC) systems based on LEDs, the limited modulation bandwidth of LEDs is a major challenge in achieving high-speed data transmission. To attain better performance on the low-pass frequency-selective fading channel, a constellation collaborated orthogonal frequency amplitude multiplexing (OFDM) is proposed in this letter. In this novel OFDM, each two subcarrier frequencies are chosen as a pair. The symbols on the two subcarrier frequencies are respectively chosen from two uniquely factorable constellation pairs (UFCPs), with one random bit acting as a coordinator to control the two symbols. Simulation comparisons demonstrate that the proposed constellation collaborative OFDM systems can attain 0.8-1.5 dB SNR gain over conventional OFDM systems.

引用

页码：1067 / 1070

页数：4

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