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Modelling and analysis of M-ary variable pulse position modulation for visible light communications

机译:可见光通信中 M 元可变脉冲位置调制的建模与分析

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摘要

Visible light communication (VLC) is an emerging communication paradigm that supports illumination and data transmission simultaneously. To provide dimming control functionality, a range of dimmable modulation methods have been exploited. Among them, the variable pulse position modulation (VPPM) scheme, which is deployed using the IEEE 802.15.7 VLC standard is very simple and easy to implement. On the other hand, it has a limited data rate because it just uses binary PPM for data transmission. This study proposes the -ary VPPM (-VPPM) scheme to increase the data rate of the VPPM scheme. To evaluate the performance of this scheme, the modelling of the transmitter, optical wireless channel and the receiver for -VPPM are provided. In addition, the error probability according to the dimming ratio and modulation order was analysed mathematically. The simulation results showed that the analytical bounds on the error probability are tight, which provides key insights into the performance trade-off of -VPPM in a dispersive VLC channel environment.
机译:可见光通信(VLC)是新兴的通信范例,可同时支持照明和数据传输。为了提供调光控制功能,已经开发了多种可调光调制方法。其中,使用IEEE 802.15.7 VLC标准部署的可变脉冲位置调制(VPPM)方案非常简单且易于实现。另一方面,它的数据速率有限,因为它仅使用二进制PPM进行数据传输。这项研究提出了-ary VPPM(-VPPM)方案,以提高VPPM方案的数据速率。为了评估该方案的性能,提供了针对-VPPM的发射机,光无线信道和接收机的建模。另外,对根据调光比和调制阶数的错误概率进行了数学分析。仿真结果表明,误差概率的分析边界是紧密的,这为在分散VLC通道环境中-VPPM的性能折衷提供了重要的见识。

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