Results 31 to 40 of about 8,747,987 (147)

Indoor gigabit optical wireless communications: challenges and possibilities [PDF]

, 2010
Indoor Gigabit optical wireless communication systems have the potential to offer multiple high-speed data services that can be delivered to homes via an optical fibre cable in the near future. In this paper we will discuss the challenges involved in the
Ghassemlooy, Zabih, Dominic O'Brien, Grahame Faulkner, O'Brien, Dominic, Faulkner, Grahame, Zabih Ghassemlooy, Le Minh, Hoa, Hoa Le Minh   +7 more
core   +1 more source

Mine emergency communication system

Gong-kuang zidonghua, 2019
Feasibility of using existing mine communication system as emergency communication system was analyzed. Leakage communication system, inductive communication system, multi-base station mobile communication system, broadcast communication system and ...
Mine emergency communication system
doaj   +1 more source

Dual-Hop Underwater Optical Wireless Communication System With Simultaneous Lightwave Information and Power Transfer

IEEE Photonics Journal, 2021
The most significant challenge of underwater optical wireless communication (UOWC) system is to overcome its limited coverage. To expand the achievable communication range, we investigate the performance of the dual-hop UOWC system with simultaneous ...
Kuan Ye, Cong Zou, Fang Yang
doaj   +1 more source

Wavelet—Artificial Neural Network Receiver for Indoor Optical Wireless Communications [PDF]

, 2011
The multipath induced intersymbol interference (ISI) and fluorescent light interference (FLI) are the two most important system impairments that affect the performance of indoor optical wireless communication (OWC) systems.
Ghassemlooy, Zabih, M. Angelova, Z. Ghassemlooy, Angelova, Maia, Rajbhandari, Sujan, S. Rajbhandari   +5 more
core   +1 more source

Optimisation of transmission bandwidth for indoor cellular OWC system using a dynamic handover decision-making algorithm [PDF]

, 2012
In this paper, we propose a novel cellular optical wireless communications (COWC) system with four diffused cells. A dynamic handover scheme is proposed to make the link more flexible by the way of adaptive channel allocation in different environments ...
Rajbhandari, S, Z. Ghassemlooy, Wu, Dehao, Lim, Wansu, D. Wu, W. Lim, S. Rajbhandari, Wu, D, Minh, H. Le, Ghassemlooy, Zabih, H. Le Minh, Ghassemlooy, Z, Rajbhandari, Sujan, Lim, L., Le Minh, Hoa   +14 more
core   +1 more source

Photonics-Aided 20 m Wireless Transmission of 56-GBaud OFDM Signals at 138 GHz in the D-Band for 6G Applications

Sensors
To meet the demand for high-capacity indoor wireless access in future 6G systems, we propose and experimentally demonstrate a photonics-aided D-band wireless transmission scheme operating at 138 GHz.
Hanyu Zhang, Zhongxiao Pei, Qinyi Zhang, Yifan Chen, Jianjun Yu   +4 more
doaj   +1 more source

Multi-channel Optical Wireless Communication under the Effect of Low Electric Field

Al-Mustansiriyah Journal of Science, 2022
In this study, the multiple-input multiple-output (MIMO) technique is proposed to mitigate the influence of an external electric field on the free space optical (FSO) communication.
Noor Wisam Sabri, Firas S. Mohammed
doaj   +1 more source

Energy pattern aided simultaneous wireless information and power transfer [PDF]

, 2015
In echoing Varshney's seminal concept of jointly transmitting information and energy, we propose the concept of an energy pattern aided Simultaneous Wireless Information and Power Transfer (SWIPT) system, where in addition to power transfer, information ...
Yang, Lie-Liang, Zhang, Rong, Hanzo, Lajos   +2 more
core   +1 more source

Multi-user indoor optical wireless communication system channel control using a genetic algorithm [PDF]

, 2011
A genetic algorithm controlled multispot transmitter is demonstrated that is capable of optimising the received power distribution for randomly aligned single element receivers in multiple fully diffuse optical wireless communications systems with ...
M.S. Leeson, R.J. Green, E.L. Hines, Leeson, Mark S., Hines, Evor, Higgins, Matthew D., Green, Roger, M.D. Higgins   +7 more
core   +1 more source

Receiver alignment dependence of a GA controlled optical wireless transmitter [PDF]

, 2009
A genetic algorithm controlled multispot transmitter is demonstrated to be capable of optimizing the received power distribution for single element receivers in fully diffuse mobile indoor optical wireless systems.
Leeson, Mark S., Higgins, Matthew D., Green, Roger   +2 more
core   +1 more source