Results 31 to 40 of about 473,739 (299)

Non-contact Human Motion Recognition Method Based on Channel State Information [PDF]

open access: yesJisuanji gongcheng, 2021
The performance of traditional sensors and cameras in motion recognition are affected by the environmental factors and limited by the risk of violating user privacy.Taking the Peking Opera actions as the research object, this paper proposes a non-contact
HAO Zhanjun, ZHANG Daiyang, DANG Xiaochao, DUAN Yu
doaj   +1 more source

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

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

Multiple antenna channels with partial channel state information at the transmitter [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2004
We investigate transmission strategies for flat-fading multiple antenna channels with t transmit and r receive antennas, and with channel state information (CSI) partially known to the transmitter. We start with an assumption that the first n eigenvectors of H/sup /spl dagger//H, where 0/spl les/n/spl les/min(t,r) and H is the channel matrix in /spl ...
June Chul Roh, Bhaskar D. Rao
openaire   +1 more source

Channel estimation and tracking for closed loop EO-STBC with differentially encoding feedback [PDF]

open access: yes, 2011
Extended orthogonal space time block coding (EO-STBC) can achieve high transmit diversity over a multiple-input multiple-output (MIMO) channel. To do so, it requires channel state information on the transmitter side, which needs to be estimated and fed ...
Weiss, Stephan   +3 more
core   +1 more source

Opportunistic scheduling with limited channel state information: A rate distortion approach [PDF]

open access: yes, 2014
We consider an opportunistic communication system in which a transmitter selects one of multiple channels over which to schedule a transmission, based on partial knowledge of the network state. We characterize a fundamental limit on the rate that channel
Matthew Johnston   +5 more
core   +1 more source

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

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

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

Supporting Survivor‐Centered Care Through Digital Health Integration

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Survivors of childhood cancer face barriers to receiving guideline‐based, long‐term follow‐up care. Two digital tools, Passport for Care (PFC) and Cancer SurvivorLink (SurvivorLink), address complementary gaps by enabling tailored survivorship care plan (SCP) generation, updating, storage, and sharing.
Jordan G. Marchak   +15 more
wiley   +1 more source

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