Results 41 to 50 of about 6,925 (205)

Non-Orthogonal Multiple Access for Hybrid VLC-RF Networks with Imperfect Channel State Information [PDF]

, 2020
The present contribution proposes a general framework for the energy efficiency analysis of a hybrid visible light communication (VLC) and Radio Frequency (RF) wireless system, in which both VLC and RF subsystems utilize nonorthogonal multiple access ...
Al-Qutayri, Mahmoud, Elgala, Hany, Hammadi, Ahmed Al, Muhaidat, Sami, Sofotasios, Paschalis C.   +4 more
core   +2 more sources

Theoretical and experimental optimization of DMT-based visible light communication under lighting constraints

EURASIP Journal on Wireless Communications and Networking, 2020
High spectral efficiency is a key element that drives research for future wireless communication systems in order to meet the increasing demand for ubiquitous connectivity despite a limited radio frequency spectrum.
Ahmad Jabban, Sylvain Haese, Maryline Helard   +2 more
doaj   +1 more source

Novel Unipolar Optical Modulation Techniques for Enhancing Visible Light Communication Systems Performance

IEEE Access, 2022
Visible Light Communications (VLC) are receiving increased attention in the wireless communications research community. VLC is secured, power efficient, and operates in the visible light range, thus RF communication bandwidth limitation is overcome.
Sara M. Farid, Mona Z. Saleh, Hesham M. Elbadawy, Salwa H. Elramly   +3 more
doaj   +1 more source

Distributions of Upper PAPR and Lower PAPR of OFDM Signals in Visible Light Communications

, 2014
Orthogonal frequency-division multiplexing (OFDM) in visible light communications (VLC) inherits the disadvantage of high peak-to-average power ratio (PAPR) from OFDM in radio frequency (RF) communications.
Baxley, Robert J., Yu, Zhenhua, Zhou, G. Tong   +2 more
core   +1 more source

Novel fast color-converter for visible light communication using a blend of conjugated polymers [PDF]

, 2015
The authors thank EPSRC for financial support from UP-VLC Project Grant (EP/K00042X/1).Visible Light Communications (VLC) is a promising new technology which could offer higher data transmission rates than existing broadband RF/microwave wireless ...
Chun, H., Faulkner, G., Kanibolotsky, A.L., Manousiadis, P.P., Obrien, D., Rajbhandari, S., Sajjad, M.T., Samuel, I.D.W., Skabara, P.J., Turnbull, G.A., Vithanage, D.A.   +10 more
core   +1 more source

A Software-Defined Multi-Element VLC Architecture

, 2017
In the modern era of radio frequency (RF) spectrum crunch, visible light communication (VLC) is a recent and promising alternative technology that operates at the visible light spectrum.
Eroglu, Yusuf Said, Guvenc, Ismail, Mushfique, Sifat Ibne, Pala, Nezih, Palathingal, Prabath, Yuksel, Murat   +5 more
core   +1 more source

Experimental Demonstration of High-Speed 4 × 4 Imaging Multi-CAP MIMO Visible Light Communications [PDF]

, 2018
In general, visible light communication (VLC) systems, which utilise white light-emitting diodes (LEDs), only offer a bandwidth limited to the lower MHz region.
Bhatnagar, Manav, Burton, Andrew, Chvojka, Petr, Ghassemlooy, Zabih, Haigh, Paul, Hassan, Navid, Werfli, Khald, Zvanovec, Stanislav   +7 more
core   +2 more sources

Optical Non-Orthogonal Multiple Access for Visible Light Communication [PDF]

, 2017
The proliferation of mobile Internet and connected devices, offering a variety of services at different levels of performance, represents a major challenge for the fifth generation wireless networks and beyond.
Hussain, Sajjad, Imran, Muhammad Ali, Marshoud, Hanaa, Muhaidat, Sami, Sharif, Bayan S., Sofotasios, Paschalis C.   +5 more
core   +2 more sources

Improving the Modulation Bandwidth of GaN‐Based Light‐Emitting Diodes for High‐Speed Visible Light Communication: Countermeasures and Challenges

Advanced Photonics Research, 2021
Visible light communication (VLC) has attracted widespread attention for wireless communications. The popularity of GaN‐based light‐emitting diodes (LEDs) has also laid a solid foundation for the application of VLC.
Rongqiao Wan, Liancheng Wang, Jinpeng Huang, Xiaoyan Yi, Hao-Chung Kuo, Jinmin Li   +5 more
doaj   +1 more source

Experimental demonstration of RGB LED-based optical camera communications [PDF]

, 2015
Red, green, and blue (RGB) light-emitting diodes (LEDs) are widely used in everyday illumination, particularly where color-changing lighting is required.
Luo, Pengfei, Zhang, Min, Ghassemlooy, Zabih, Le Minh, Hoa, Tsai, Hsin-Mu, Tang, Xuan, Png, Lih Chieh, Han, Dahai   +7 more
core   +3 more sources