Results 11 to 20 of about 65,470 (256)

RSS-Based Localization of Multiple Directional Sources With Unknown Transmit Powers and Orientations

open access: yesIEEE Access, 2019
Received-signal-strength (RSS)-based localization has received widespread attention recently. Due to the simple acquisition of the RSS measurements, the adequate inexpensive sensors in sensor networks are capable of providing the information needed for ...
Peiliang Zuo   +4 more
doaj   +1 more source

Transmission Scheme with Limited Channel State Information Feedback for 3D MIMO System

open access: yesInternational Journal of Antennas and Propagation, 2015
Three-dimensional (3D) multiple-input multiple-output (MIMO) system can exploit the spatial degree of freedom in vertical dimension and can significantly improve system performance compared with 2D transmission scheme.
Xing Li   +4 more
doaj   +1 more source

Moving Object Detection With Deep CNNs

open access: yesIEEE Access, 2020
In large field of view for open country, the real-time detection and identification of moving objects with high accuracy is a very challenging work due to the excessive amount of data.
Haidi Zhu   +5 more
doaj   +1 more source

Joint Optimization of Cache Placement and Bandwidth Allocation in Heterogeneous Networks

open access: yesIEEE Access, 2018
Content caching at edge of the network has been considered as an effective way to reduce latency and alleviate burden on backhaul. In this paper, cache placement and bandwidth allocation strategies are jointly investigated in a multi-user system of a ...
Weiqi Sun   +3 more
doaj   +1 more source

Absorbance properties of gold coated fiber Bragg grating sensor for aqueous ethanol [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2014
Optical Fiber Bragg Grating (FBG) is commonly deployed as a wavelength selective filter in telecommunication as well as to detect physical changes such as pressure, temperature and strain in sensing applications.
Arasu P. T.   +7 more
doaj   +1 more source

Mobility-Aware Coded Probabilistic Caching Scheme for MEC-Enabled Small Cell Networks

open access: yesIEEE Access, 2017
Caching on the edge has been recognized as an effective solution to tackle the backhaul constraint of network densification. However, most related works ignored user mobility in wireless networks, which is unreasonable under the background of network ...
Xinwei Liu   +3 more
doaj   +1 more source

Cell Outage Detection and Compensation in Two-Tier Heterogeneous Networks

open access: yesInternational Journal of Antennas and Propagation, 2014
Heterogeneous networks (HetNets) can increase network capacity through complementing the macro-base-station with low-power nodes, in response to the ongoing exponential growth in data traffic demand. While, unprecedented challenges exist in the planning,
Wenqian Xue   +4 more
doaj   +1 more source

Resource Allocation for Cognitive Satellite Communications Downlink

open access: yesIEEE Access, 2018
Cognitive satellite communications (SatCom) is considered to be able to alleviate the bottleneck of spectrum resource shortage due to traditional spectrum allocation.
Peiliang Zuo   +3 more
doaj   +1 more source

Power minimization for GSIC-based uplink cell-free massive MIMO-NOMA systems

open access: yesEURASIP Journal on Advances in Signal Processing, 2022
Non-orthogonal multiple access (NOMA) and multiple-input multiple-output (MIMO) are considered promising techniques to satisfy the demands for high spectrum efficiency and massive connectivity in future wireless communication.
Tao Cui   +3 more
doaj   +1 more source

New Gradient-Weighted Adaptive Gradient Methods With Dynamic Constraints

open access: yesIEEE Access, 2020
Existing adaptive gradient descent optimization algorithms such as adaptive gradient (Adagrad), adaptive moment estimation (Adam), and root mean square prop (RMSprop), increase the convergence speed by dynamically adjusting the learning rate. However, in
Dong Liang, Fanfan Ma, Wenyan Li
doaj   +1 more source

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