L
Ling Cheng
Researcher at University of the Witwatersrand
Publications - 137
Citations - 1006
Ling Cheng is an academic researcher from University of the Witwatersrand. The author has contributed to research in topics: Visible light communication & Communication channel. The author has an hindex of 13, co-authored 123 publications receiving 644 citations. Previous affiliations of Ling Cheng include Rand Afrikaans University & University of Johannesburg.
Papers
More filters
Journal ArticleDOI
Structured Light in Turbulence
TL;DR: A review of recent progress in structured light in turbulence, first with a tutorial style summary of the core concepts, before highlighting the present state of the art in the field, and with new experimental studies that reveal which types of structured light are best in turbulence.
Journal ArticleDOI
An Overview of OFDM-Based Visible Light Communication Systems From the Perspective of Energy Efficiency Versus Spectral Efficiency
Yaqi Sun,Fang Yang,Ling Cheng +2 more
TL;DR: The energy efficiency and the spectral efficiency for orthogonal frequency division multiplexing (OFDM)-based visible light communication schemes are studied and should be considered in practice according to the requirements of illumination and transmission.
Journal ArticleDOI
Tackling Africa's digital divide
Martin P. J. Lavery,Mojtaba Mansour Abadi,Ralf Bauer,Gilberto Brambilla,Ling Cheng,Mitchell A. Cox,Angela Dudley,Andrew D. Ellis,Nicolas K. Fontaine,Anthony Kelly,Christoph Marquardt,Selaelo Matlhane,Bienvenu Ndagano,Francesco Petruccione,Radan Slavik,Filippo Romanato,Carmelo Rosales-Guzmán,Filippus S. Roux,Kobus Roux,Jian Wang,Andrew Forbes +20 more
TL;DR: In this article, sustainable photonics technologies such as free-space optical links and solar-powered equipment provide developing countries with new cost-effective opportunities for deploying future-proof telecommunication networks.
Proceedings ArticleDOI
Codes for correcting three or more adjacent deletions or insertions
TL;DR: Codes are presented that can correct the deletion or the insertion of a predetermined number of adjacent bits greater than or equal to three to correct one or two adjacent deletions or insertions.
Journal ArticleDOI
The Resilience of Hermite– and Laguerre–Gaussian Modes in Turbulence
TL;DR: In this article, a carefully chosen subset of Hermite-Gaussian modes is shown to be more resilient to atmospheric turbulence than similar Laguerre-Gauss beams, with a predicted upper bound increase in propagation distance of 167% at a mode-dependent loss of 50%.