Appropriate modulation scheme for visible light communication systems considering illumination

被引：25
|
作者：
Ma, Xiaoxue [1 ]
Lee, Kyujin [1 ]
Lee, Kyesan [1 ]
机构：
[1] Kyung Hee Univ, Dept Elect & Radio Engn, Yongin, South Korea
来源：
ELECTRONICS LETTERS | 2012年 / 48卷 / 18期
关键词：
D O I：
10.1049/el.2012.2195
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：
Visible light communication (VLC) systems use light emitting diode (LED) technology for illumination and data transmission at the same time. The main concerns of VLC systems are illumination and BER performance. In optical systems, the modulation scheme affects the illumination and BER. Therefore, it is necessary to analyse the performance of the modulation schemes applied in the VLC system. To analyse the bandwidth requirement, power efficiency, brightness and flickering problem, four different modulation schemes, were compared: OOK, pulse position modulation (PPM), overlapping PPM (OPPM), and inverted PPM (I-PPM). It is shown that OPPM achieves better performance with flexible illumination. Moreover, trellis-coded modulation (TCM) is applied to improve the BER performance. Simulation results show that OPPM is a powerful candidate modulation scheme for VLC systems.
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页码：1137 / U168
页数：2
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