Results 61 to 70 of about 3,930,567 (286)

Analysis on Cache-Enabled Wireless Heterogeneous Networks [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2016
Caching the popular multimedia content is a promising way to unleash the ultimate potential of wireless networks. In this paper, we contribute to proposing and analyzing the cache-based content delivery in a three-tier heterogeneous network (HetNet), where base stations (BSs), relays and device-to-device (D2D) pairs are included.
Chenchen Yang   +3 more
openaire   +3 more sources

A generic framework for energy evaluation on wireless sensor networks

open access: yes, 2016
Due to reliance on batteries, energy consumption has always been of significant concern for sensor node networks. This work presents the design and implementation of a house-build experimental platform, named Energy Management System for Wireless Sensor ...
Vasilakos, Athanasios,, Zhu, Nanhao,
core   +1 more source

2D Hierarchical Black Phosphorus‐Mn2O3 Heterostructured Composites for High‐Performance Flexible Supercapacitors

open access: yesAdvanced Materials Interfaces, EarlyView.
A sonochemical strategy constructs an ex situ 2D hierarchical black phosphorus–Mn2O3 heterostructure, enabling intimate interfacial coupling, enhanced charge transport, and improved electrochemical stability. The optimized BPM‐37.5% electrode delivers 466 F g−1 with 84% retention after 8000 cycles, while the flexible device exhibits high areal energy ...
Sowmiya Selvaraj   +1 more
wiley   +1 more source

Design of a Heterogeneous Cellular Network With a Wireless Backhaul [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2017
The downlink of a two-layered heterogeneous network is studied with macro basestations (MBs), small-cell basestations (SBs) that act as half-duplex analog relays, and mobile terminals (MTs). The first layer is a wireless backhaul layer between MBs and SBs, and the second is the transmission layer between SBs and MTs.
Meghana Bande, Venugopal V. Veeravalli
openaire   +3 more sources

Beyond Passivation: Designing Structurally Tailored Artificial Interphases for High‐Energy Lithium‐Based Anodes

open access: yesAdvanced Materials Interfaces, EarlyView.
This review outlines critical engineering design rules for building artificial protective coatings on next‐generation lithium metal and silicon battery anodes. It highlights how balancing structural flexibility with strict electronic and ionic transport limits prevents early battery failure.
Surin Gupte, Vilas G. Pol
wiley   +1 more source

Common security issues and challenges in wireless sensor networks and IEEE 802.11 wireless mesh networks [PDF]

open access: yes, 2009
Both Wireless Mesh Network (WMN) and Wireless Sensor Network (WSN) are multi-hop wireless networks. WMN is an emerging community based integrated broadband wireless network which ensures high bandwidth ubiquitous internet provision to users, while, WSN ...
Loo, KK, Naeem, T
core   +4 more sources

IEEE Access Special Section Editorial: Emerging Cloud-Based Wireless Communications and Networks

open access: yesIEEE Access, 2015
Cloud-based processing is expected to play a major role in the fifth generation (5G) wireless systems, which allows for a high-quality experience for mobile cellular access.
Wei Wang   +4 more
doaj   +1 more source

On heterogeneous neighbor discovery in wireless sensor networks [PDF]

open access: yes2015 IEEE Conference on Computer Communications (INFOCOM), 2015
Neighbor discovery plays a crucial role in the formation of wireless sensor networks and mobile networks where the power of sensors (or mobile devices) is constrained. Due to the difficulty of clock synchronization, many asynchronous protocols based on wake-up scheduling have been developed over the years in order to enable timely neighbor discovery ...
Lin Chen 0003   +6 more
openaire   +3 more sources

Unified clustering and communication protocol for wireless sensor networks [PDF]

open access: yes, 2008
In this paper we present an energy-efficient cross layer protocol for providing application specific reservations in wireless senor networks called the “Unified Clustering and Communication Protocol ” (UCCP). Our modular cross layered framework satisfies
Aslam, Nauman   +2 more
core  

Wood‐Derived Nanocellulose‐Biocarbon Fresnel‐Zone Plate Lenses for Sub‐THz Frequency Applications

open access: yesAdvanced Materials Technologies, EarlyView.
Wood‐derived nanocellulose and lignin‐based biocarbon were combined to fabricate fully bio‐based Fresnel zone plate (FZP) lenses for sub‐terahertz frequencies. These sustainable FZP lenses exhibit low dielectric loss and high directivity, achieving performance comparable to that of metallic references, and remain functional under environmental stress ...
Riikka Haataja   +9 more
wiley   +1 more source

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