Results 111 to 120 of about 847,683 (321)

Experimental Demonstration of OFDM/OQAM Transmission for Visible Light Communications

IEEE Photonics Journal, 2016
We propose a modified orthogonal frequency division multiplexing/offset quadrature amplitude modulation (OFDM/OQAM) scheme for visible light communications (VLC).
Bangjiang Lin, Xuan Tang, Zabih Ghassemlooy, Xi Fang, Chun Lin, Yiwei Li, Shihao Zhang   +6 more
doaj   +1 more source

Visible light communication based motion detection

Optics Express, 2015
In this paper, a unique and novel visible light communication based motion detection is presented. The proposed motion detection is performed based on white light LEDs and an array of photodetectors from existing visible light communication (VLC) links, thus providing VLC with three functionalities of illumination, communication and motion detection ...
Sewaiwar, Atul, Tiwari, Samrat Vikramaditya, Chung, Yeon-Ho   +2 more
openaire   +3 more sources

Smart Closed‐Loop Systems in Personalized Healthcare: Advances and Outlook

Advanced Materials Technologies, EarlyView.
A smart closed‐loop e‐textile integrates multimodal sensing, onboard processing, wireless communication, and wearable power to enable real‐time physiological/biochemical monitoring and feedback‐controlled therapy. ABSTRACT Smart textiles represent a revolutionary frontier in healthcare, seamlessly blending fabric and advanced technologies to create ...
Safoora Khosravi, Sang Won Lee, Mohammad Abrar Uddin, Sina Hassanpoor, Neha Suvindran, Katherine Le, Harun Arkaz, Harishkumar Narayana, Saeid Soltanian, Danial Khorsandi, Negar Hosseinzadeh Kouchehbaghi, Taeil Kim, Yangzhi Zhu   +12 more
wiley   +1 more source

Application of Expurgated PPM to Indoor Visible Light Communications - Part II: Access Networks

, 2013
Providing network access for multiple users in a visible light communication (VLC) system that utilizes white light emitting diodes (LED) as sources requires new networking techniques adapted to the lighting features.
Brandt-Pearce, Maite, Noshad, Mohammad
core   +1 more source

Hydrogel‐Based Functional Materials: Classifications, Properties, and Applications

Advanced Materials Technologies, EarlyView.
Conductive hydrogels have emerged as promising materials for smart wearable devices due to their outstanding flexibility, multifunctionality, and biocompatibility. This review systematically summarizes recent progress in their design strategies, focusing on monomer systems and conductive components, and highlights key multifunctional properties such as
Zeyu Zhang, Zao Cheng, Patrizio Raffa
wiley   +1 more source

User-Centric Blind Interference Alignment Design for Visible Light Communications

IEEE Access, 2019
Visible light communications (VLC) are considered as a key technology for future wireless communications. In order to mitigate the interference, several transmit precoding (TPC) schemes have been proposed for VLC.
Ahmad Adnan-Qidan, Maximo Morales Cespedes, Ana Garcia Armada   +2 more
doaj   +1 more source

A 3.9 km baseline intensity interferometry photon counting experiment

, 2018
In the last years we have operated two very similar ultrafast photon counting photometers (Iqueye and Aqueye+) on different telescopes. The absolute time accuracy in time tagging the detected photon with these instruments is of the order of 500 ps for ...
Barbieri, Cesare, Barbieri, Mauro, Farisato, Giancarlo, Favazza, Paolo, Lessio, Luigi, Naletto, Giampiero, Umbriaco, Gabriele, Verroi, Enrico, Zampieri, Luca   +8 more
core   +1 more source

Vision‐Augmented Wearable Interfaces: Bioinspired Approaches for Realistic AI‐Human‐Machine Interaction

Advanced Materials Technologies, EarlyView.
This review presents recent progress in vision‐augmented wearable interfaces that combine artificial vision, soft wearable sensors, and exoskeletal robots. Inspired by biological visual systems, these technologies enable multimodal perception and intelligent human–machine interaction.
Jihun Lee, Gwuidong Ryu, Kisoo Kim, Feng Xu, Won Gu Lee   +4 more
wiley   +1 more source

LiRF: Light-Based Wireless Communications Supporting Ubiquitous Radio Frequency Signals

IEEE Photonics Journal
As the Internet of Things (IoT) becomes increasingly prevalent, there is a surge in wireless-connected devices. In this context, one technique that has garnered significant attention is visible light communication (VLC) due to its ultra-wide and license ...
Runxin Zhang, Menghan Li, Yuheng Zhang, Jian Xiong, Lu Lu   +4 more
doaj   +1 more source

Adaptive Postdistortion for Nonlinear LEDs in Visible Light Communications

IEEE Photonics Journal, 2014
In a visible light communication (VLC) system, the light-emitting diode (LED) is the major source of nonlinearity. The nonlinear effects in the VLC system are different from the conventional wireless communications system.
H. Qian, S. J. Yao, S. Z. Cai, T. Zhou
doaj   +1 more source