Results 21 to 30 of about 32,324,543 (245)

Behavior Recognition Method Based on Channel State Information in Through-the-Wall [PDF]

open access: yesJisuanji gongcheng, 2021
The passive behavior recognition method provided by Wi-Fi CSI has been applied in many scenarios, but the existing systems hardly consider the scene where the signal passes through the wall, or the sharp decline in recognition accuracy after the signal ...
MENG Qianxia, YU Jiang, CHANG Jun, PU Yu, CHEN Cheng
doaj   +1 more source

Information for state government [PDF]

open access: yes, 2005
This brochure from the State Library gives contact information for the library and describes the services for and collections of interest to state ...
South Carolina State Library
core   +1 more source

Channel Charting: Locating Users Within the Radio Environment Using Channel State Information

open access: yesIEEE Access, 2018
We propose channel charting (CC), a novel framework in which a multi-antenna network element learns a chart of the radio geometry in its surrounding area.
Christoph Studer   +4 more
doaj   +1 more source

Channel Prediction Aided Coded Modulation Assisted Eigen-Beamforming

open access: yes, 2007
Eigen-beamforming is capable of providing attractive performance gains in the context of Multiple-Input Multiple-Output (MIMO) systems, provided that accurate Channel State Information (CSI) is available.
Ng, S.X., Liu, W., Yang, L-L., Hanzo, L.
core   +2 more sources

Fast compression of OFDM channel state information with constant frequency sinusoidal approximation

open access: yesEURASIP Journal on Wireless Communications and Networking, 2019
We propose CSIApx, a very fast and lightweight method to compress the channel state information (CSI) of Wi-Fi networks. CSIApx approximates the CSI vector as the linear combination of a small number of base sinusoids on constant frequencies and uses the
Avishek Mukherjee, Zhenghao Zhang
doaj   +1 more source

Human Complex Motion Recognition Method Based on Channel State Information [PDF]

open access: yesJisuanji gongcheng, 2020
Most of the existing human motion recognition methods have drawbacks such as low recognition accuracy,high cost,and limited identification ability,in that only simple motions can be identified.Therefore,this paper proposes a human complex motion ...
HAO Zhanjun, DUAN Yu, DANG Xiaochao, CAO Yuan
doaj   +1 more source

MIMO Multiple Access Channels with Partial Channel State Information [PDF]

open access: yes, 2010
The increasing demand for wireless communication systems has been the starting point for many research activities and discussions about the best way to make a cleaver usage of the available spectrum and the available power, in order to satisfy the ...
Aubry, Augusto
core   +1 more source

Non‐orthogonal multiple access without channel state information for similar channel conditions

open access: yesElectronics Letters, 2019
A downlink non‐orthogonal multiple access with QPSK input constellations based on virtual channel optimisation is presented to address the similar channel conditions scenario.
Wenlong Xia   +3 more
doaj   +1 more source

Indoor sensing technology based on channel state information

open access: yesDianxin kexue, 2019
The wide spread wireless network has brought about tremendous development of mobile internet business services and has become one of the infrastructures of modern society.The basic principles and implementation methods of wireless sensing technology were
Zhefu WU   +4 more
doaj   +2 more sources

Channel State Discrimination Method Based on Multi-Structure Color Difference Histogram

open access: yesIEEE Access, 2020
The determination of channel characteristics has always been a research hotspot of wireless communication systems. It directly affects the correctness of channel state analysis.
Yifan Chen, Zheng Dou, Yun Lin
doaj   +1 more source

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