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Carrier-less amplitude and phase modulated visible light communication system based on a constellation-shaping scheme

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Abstract

In this Letter, we propose a novel constellation-shaping carrier-less amplitude and phase (CAP) modulation scheme to alleviate the systematic nonlinearity in visible light communication (VLC) systems. A simple geometric transformation shaping method is employed to convert the normal square lattice constellation into multiple circular constellations. The feasibility and performance are investigated and experimentally demonstrated by a 1.25 Gb/s CAP-modulated VLC system. The results indicate that the circular constellation has better resistance to systematic nonlinearity compared with a rectangular constellation. The dynamic range of input signal peak-to-peak values promotes 20% at a low bias voltage nonlinear area and 50% at a high bias voltage nonlinear area. To the best of our knowledge, this is the first time constellation-shaping CAP has ever been reported in indoor high data rate VLC systems.

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DOI:10.3788/col201715.030602

所属栏目:Fiber optics and optical communication

收稿日期:2016-07-03

录用日期:2016-12-23

网络出版日期:2017-01-22

作者单位    点击查看

Zhixin Wang:State Key Lab of ASIC, Department of Communication Science and Engineering, Fudan University, Shanghai 200433, China
Mengjie Zhang:State Key Lab of ASIC, Department of Communication Science and Engineering, Fudan University, Shanghai 200433, China
Siyuan Chen:State Key Lab of ASIC, Department of Communication Science and Engineering, Fudan University, Shanghai 200433, China
and Nan Chi:State Key Lab of ASIC, Department of Communication Science and Engineering, Fudan University, Shanghai 200433, China

联系人作者:联系作者(nanchi@fudan.edu.cn)

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引用该论文

Zhixin Wang, Mengjie Zhang, Siyuan Chen, and Nan Chi, "Carrier-less amplitude and phase modulated visible light communication system based on a constellation-shaping scheme," Chinese Optics Letters 15(3), 030602 (2017)

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