Results 21 to 30 of about 55,562 (312)

Kernel PCA feature extraction and the SVM classification algorithm for multiple-status, through-wall, human being detection

open access: yesEURASIP Journal on Wireless Communications and Networking, 2017
Ultra-wideband (UWB) radar with strong anti-jamming performance and high-range resolution can be used to separate multiple human targets in a complex environment.
Wei Wang, Min Zhang, Dan Wang, Yu Jiang
doaj   +1 more source

Wireless Power Transmission

open access: yesIOP Conference Series: Materials Science and Engineering, 2019
Abstract In recent days, Wireless Power Transfer (WPT) and harvesting energy received lots of attentions due to the necessity of having a flexible, suitable and secure source of energy. With the explosion of wireless technologies including wireless sensor network (WSN) like internet of things, such intelligent systems had highlighted ...
V. Bhavya Keerthi   +2 more
openaire   +1 more source

Recent developments in indoor optical wireless systems [PDF]

open access: yes, 2008
An overview of the developments in optical wireless systems viewed from the traditional communications viewpoint of transmitter, channel and receiver is presented.
Leeson, Mark S.   +3 more
core   +1 more source

2 x 80 Gbit/s DWDM Bidirectional Wavelength Reuse Optical Wireless Transmission [PDF]

open access: yes, 2013
We demonstrate a practical 2×80 Gbit/s dense wavelength division multiplexing (DWDM) bidirectional short-range optical wireless link. The measured power penalties for the bidirectional transmission are less than 0.8 and 0.2 dB compared to the back-to ...
Ghassemlooy, Zabih   +5 more
core   +1 more source

Wireless Transmission of Solar Power

open access: yesInternational Journal for Research in Applied Science and Engineering Technology, 2021
The Solar Power Satellite (SPS) is an energy system that collects solar energy in the upper atmosphere and transfers it to the ground. It has been seen as one of the best ways to alleviate the problem of future electricity needs. In the times to come, wireless power transmission will be used as it requires less maintenance and numerous other benefits ...
openaire   +1 more source

A Feedback-Based Transmission for Wireless Networks with Energy and Secrecy Constraints [PDF]

open access: yes, 2011
This paper investigates new transmission techniques for clustered feedback-based wireless networks that are characterized by energy and secrecy constraints.
McLaughlin, Stephen; id_orcid   +11 more
core   +1 more source

On the downlink throughput capacity of hybrid wireless networks with massive MIMO

open access: yesEURASIP Journal on Wireless Communications and Networking, 2018
In this paper, the entire network model is a hybrid wireless network model in which each base station is connected to each other via a wired link. On this basis, we place a large number of antennas (massive MIMO) at each base station to serve a single ...
Baoju Zhang, Yipeng Tian, Wei Wang
doaj   +1 more source

Assessment of proactive transmission power control for wireless sensor networks [PDF]

open access: yes, 2014
In order to prolong lifetime of Wireless Sensor Networks (WSN), Transmission Power Control (TPC) techniques are employed. The existing TPC schemes adjust the transmission power mostly reacting to changes at link quality between communicating nodes ...
Liotta, Antonio   +6 more
core   +1 more source

Nonuniform antenna array design by parallelizing three-parent crossover genetic algorithm

open access: yesEURASIP Journal on Wireless Communications and Networking, 2017
Antenna plays a very important role in wireless communication. Array elements laid out nonuniformly could achieve better frequency reliability and lower sidelobe level than uniform spaced elements.
Xin Zhang, Qinglian Zhang, Xiu Zhang
doaj   +1 more source

Electronic tuning of misaligned coils in wireless power transfer systems [PDF]

open access: yes, 2014
The misalignment and displacement of inductively coupled coils in a wireless power transfer system (WPT) can degrade the power efficiency and limit the amount of power that can be transferred.
Whidborne, James F.   +2 more
core   +1 more source

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