Whereas the increasing popularity of both commercial light-emitting diode (LED) lighting and mobile devices certainly creates opportunity for real-life deployment of visible light communication (VLC) systems, reaching the high throughput promised by lab experiments still faces major obstacles. In particular, lacking the sophisticated hardware and software support under experimental conditions, real-life systems are challenged in many aspects, especially low signal-to-noise ratio, low operation frequency, uncontrollable LED nonlinearity, and illumination requirements. Nonetheless, deployments tapping commercial infrastructure are critical to gain market penetration for VLC-enabled wireless applications, so boosting the performance of these real-life systems becomes imperative. In this article, we consider the multiple LED chips and/or light sources nature of indoor commercial lighting infrastructure, and propose a spatial modulation that composes the cooperative light emissions (transmissions) from multiple LEDs. In addition to gaining a higher spectral efficiency, this scheme utilizes the multiple-LED nature of commercial lighting to overcome LED nonlinearity with a novel yet simplified hardware construction. We present two typical designs adopting this special modulation under different infrastructural constraints, and provide an introduction on its potential contribution to the standardization of VLC. Finally, we discuss potential extensions to further improve performance.

中文翻译：

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通过光发射组合实现 Piggyback-VLC 的实际部署

尽管商用发光二极管 (LED) 照明和移动设备的日益普及无疑为可见光通信 (VLC) 系统的实际部署创造了机会，但实现实验室实验所承诺的高吞吐量仍面临重大障碍。特别是缺乏实验条件下成熟的硬件和软件支持，现实生活中的系统在许多方面都面临挑战，尤其是低信噪比、低工作频率、不可控的 LED 非线性和照明要求。尽管如此，利用商业基础设施的部署对于获得支持 VLC 的无线应用的市场渗透率至关重要，因此提高这些实际系统的性能变得势在必行。在本文中，我们考虑了室内商业照明基础设施的多个 LED 芯片和/或光源的性质，并提出了一种空间调制，由多个 LED 的协作光发射（传输）组成。除了获得更高的光谱效率外，该方案还利用商业照明的多 LED 特性，通过新颖但简化的硬件结构来克服 LED 非线性。我们介绍了在不同基础设施约束下采用这种特殊调制的两种典型设计，并介绍了其对 VLC 标准化的潜在贡献。最后，我们讨论了进一步提高性能的潜在扩展。并提出了一种空间调制，由多个 LED 的协作光发射（传输）组成。除了获得更高的光谱效率外，该方案还利用商业照明的多 LED 特性，通过新颖但简化的硬件结构来克服 LED 非线性。我们介绍了在不同基础设施约束下采用这种特殊调制的两种典型设计，并介绍了其对 VLC 标准化的潜在贡献。最后，我们讨论了进一步提高性能的潜在扩展。并提出了一种空间调制，由多个 LED 的协作光发射（传输）组成。除了获得更高的光谱效率外，该方案还利用商业照明的多 LED 特性，通过新颖但简化的硬件结构来克服 LED 非线性。我们介绍了在不同基础设施约束下采用这种特殊调制的两种典型设计，并介绍了其对 VLC 标准化的潜在贡献。最后，我们讨论了进一步提高性能的潜在扩展。我们介绍了在不同基础设施约束下采用这种特殊调制的两种典型设计，并介绍了其对 VLC 标准化的潜在贡献。最后，我们讨论了进一步提高性能的潜在扩展。我们介绍了在不同基础设施约束下采用这种特殊调制的两种典型设计，并介绍了其对 VLC 标准化的潜在贡献。最后，我们讨论了进一步提高性能的潜在扩展。