Results 31 to 40 of about 566,417 (282)

Ultrasensitive bionic photonic-electronic skin with wide red-shift mechanochromic response

Light: Advanced Manufacturing
Mimicking animal skin is an effective strategy for enhancing the performance of artificial skin. Inspired by a chameleon’s iridophore and a spider’s slit organ, a novel photonic-electronic skin (PE-skin) with excellent optical/electrical dual-sensing ...
Tianqi Wang, Lei Chen, Haogeng Liu, Haoran Zhu, Zijie Zeng, Yixin Lu, Ping Zhang, Yaofei Chen, Yue Huang, Gui-Shi Liu, Yunhan Luo, Zhe Chen   +11 more
doaj   +1 more source

Indoor visible light communications: performance evaluation and optimization

EURASIP Journal on Wireless Communications and Networking, 2018
For indoor visible light communication (VLC), much work has been done when the noise is independent of the input signal. However, less effort is made when the VLC system suffers from the input-dependent noise.
Sheng-Hong Lin, Cheng Liu, Xu Bao, Jin-Yuan Wang   +3 more
doaj   +1 more source

Relay-Aided Secure Broadcasting for Visible Light Communications

, 2019
A visible light communication broadcast channel is considered, in which a transmitter luminaire communicates with two legitimate receivers in the presence of an external eavesdropper.
Arafa, Ahmed, Panayirci, Erdal, Poor, H. Vincent   +2 more
core   +1 more source

Experimental demonstration of SCMA for visible light communications [PDF]

, 2018
We propose an experimental demonstration of sparse code multiple access (SCMA) based visible light communications (VLC) system, in which the multi-dimensional codewords selected from a predefined codebook set are used to encode the transmitted data and a
Ghassemlooy, Zabih, Lin, Bangjiang, Lin, Chun, Tang, Xuan, Zhou, Zhenlei   +4 more
core   +1 more source

Laser visible light communications [PDF]

2012 IEEE Photonics Society Summer Topical Meeting Series, 2012
Visible Light Communications (VLC) via lighting must overcome the slow white LED. We propose the addition of a fast red laser to improve datarate, coverage, and light quality.
Tarik Borogovac, Thomas D.C. Little
openaire   +1 more source

Phase-Aligned Physical-Layer Network Coding in Visible Light Communications

IEEE Photonics Journal, 2019
Deploying relay nodes in visible light communication (VLC) relieves the requirement of line-of-sight transmission and thus extends the service coverage of VLC systems.
Xun Guan, Qing Yang, Taotao Wang, Calvin Chun-Kit Chan   +3 more
doaj   +1 more source

Optical Power Domain NOMA for Visible Light Communications [PDF]

, 2019
We propose an optical power domain non-orthogonal multiple access (OPD-NOMA) scheme for visible light communications. OPD-NOMA superposes user messages in the optical power domain based on a light-emitting diode (LED) array.
Ghassemlooy, Zabih, Lin, Bangjiang, Tang, Xuan   +2 more
core   +1 more source

Information Theoretic Limits of Improved ACO-OFDM Receivers in Optical Intensity Channels With Time Dispersion

IEEE Open Journal of the Communications Society
From an information-theoretic perspective, we investigate performance of asymmetrically clipped optical OFDM (ACO-OFDM) in intensity modulated optical wireless systems.
Xiaozhen Liu, Jing Zhou, Wenyi Zhang
doaj   +1 more source

DC-Bias for Optical OFDM in Visible Light Communications

IEEE Access, 2019
The requirement of a DC-bias is known to make DC-biased optical orthogonal frequency division multiplexing (DCO-OFDM) less energy efficient. This can be improved by asymmetrically clipped optical OFDM (ACO-OFDM), pulse amplitude modulated OFDM (PAM-OFDM)
Xiong Deng, Shokoufeh Mardanikorani, Guofu Zhou, Jean-Paul M. G. Linnartz   +3 more
doaj   +1 more source

A Multi-CAP Visible-Light Communications System With 4.85-b/s/Hz Spectral Efficiency [PDF]

, 2015
In this paper, we experimentally demonstrate a multiband carrierless amplitude and phase modulation format for the first time in VLC. We split a conventional carrierless amplitude and phase modulated signal into m subcarriers in order to protect from the
Bentley, Edward, Burton, Andrew, Chvojka, Petr, Haigh, Paul, Le Minh, Hoa, Papakonstantinou, Ioannis, Popoola, Wasiu Oyewole, Werfli, Khald, Zvanovec, Stanislav   +8 more
core   +3 more sources