On the Implementation of Carrierless Amplitude and Phase Modulation in Visible Light Communication
On the Implementation of Carrierless Amplitude and Phase Modulation in Visible Light Communication
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DOI：
10.1109/access.2018.2876001
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发表时间：
2018-01-01
期刊：
影响因子：
3.9
通讯作者：
Popoola, Wasiu O.
中科院分区：
文献类型：
--
作者：
Akande, Kabiru O.;Haigh, Paul Anthony;Popoola, Wasiu O.
无载波幅度和相位调制（CAP）是一种频谱效率高的方案，已被提出来解决有限的调制带宽的挑战，在可见光通信（VLC）。VLC技术利用现有的照明灯具来提供无线数据通信，这使得它对许多应用具有吸引力。然而，VLC中主要采用的市售白色发光二极管（LED）提供限制可实现的数据速率的低调制带宽。因此，CAP调制被用来提高可实现的数据速率，主要是由于其实现简单和高频谱效率。CAP方案还具有特殊的特征，因为它可以被实现为提供设计灵活性的单频带或多频带方案。本文提出了一个深入的研究，在基于LED的VLC系统的CAP的实施，突出的独特功能，使其特别适合于VLC应用。此外，进行了全面的调查，关于CAP调制收发器的设计参数，它的好处，和技术，以减轻基于CAP的VLC系统的挑战。
Carrierless amplitude and phase modulation (CAP) is one of the spectrally efficient schemes that have been proposed to tackle the limited modulation bandwidth challenge in visible light communication (VLC). The VLC technology leverages existing lighting fixtures to provide wireless data communication, which makes it attractive for many applications. However, the commercially available white light emitting diodes (LEDs) that are predominantly employed in VLC offer low modulation bandwidths that limit the achievable data rate. Thus, CAP modulation is employed to improve achievable data rate, primarily due to its implementation simplicity and high spectral efficiency. The CAP scheme also has a special feature in that it can be implemented as a single band or a multiband scheme which provides design flexibility. This paper presents an in-depth study of the implementation of CAP in LED-based VLC systems, highlighting the unique features that make it specially suited for VLC applications. Furthermore, a comprehensive investigation is carried out regarding the design parameters of the CAP modulation transceiver, its benefits, and techniques to mitigate the challenges of CAP-based VLC systems.