Results 81 to 90 of about 2,569,604 (332)

Regularized WDFDC Receivers for Selective Detect-and-Forward Multi-Relaying Systems

open access: yesIEEE Open Journal of Vehicular Technology, 2020
This article considers regularized Weighted Decision Feedback Differential Coherent (WDFDC) receivers for selective Detect-and-Forward multi-relaying systems, operating over fast fading channels. Non-regularized WDFDC receivers have been employed in such
Junqian Zhang, Harry Leib
doaj   +1 more source

Pattern Formation in Non‐Equilibrium Architected Materials

open access: yesAdvanced Materials Technologies, EarlyView.
This article demonstrates an artificial mechanical system ‐ a robotic metamaterial ‐ as an accessible and versatile platform within which to explore and prescribe the reaction‐diffusion driven pattern formation hitherto associated with comparatively less accessible and versatile non‐equilibrium biological and chemical systems.
Vinod Ramakrishnan, Michael J. Frazier
wiley   +1 more source

Network Coding for Line Networks with Broadcast Channels

open access: yesEntropy, 2012
An achievable rate region for line networks with edge and node capacity constraints and broadcast channels (BCs) is derived. The region is shown to be the capacity region if the BCs are orthogonal, deterministic, physically degraded, or packet erasure ...
Seyed Mohammadsadegh Tabatabaei Yazdi   +1 more
doaj   +1 more source

Programmable Dimensional Lithography with Digital Micromirror Devices for Multifunctional Microarchitectures

open access: yesAdvanced Materials Technologies, EarlyView.
This review explores recent advances in digital micromirror device (DMD)‐based lithography, focusing on its programmable light modulation, multi‐material compatibility, and dimensional patterning strategies. It highlights innovations from optical system design to materials integration and multifunctional applications, positioning DMD lithography as a ...
Yubin Lee   +5 more
wiley   +1 more source

Joint Relay and Eavesdropper Selection Strategy Against Multiple Eavesdroppers over Nakagami- $m$ Fading Channels in Cooperative Decode-and-Forward Relay Networks

open access: yesIEEE Access, 2019
Physical layer security (PLS) in the presence of multiple eavesdroppers over Nakagami-m fading channels for cooperative decode-and-forward (DF) relay network that consists of one source, one destination, and multiple relays is investigated.
Qian Guo, Wei Feng
doaj   +1 more source

Asymptotic Analysis on Spatial Coupling Coding for Two-Way Relay Channels

open access: yes, 2018
Compute-and-forward relaying is effective to increase bandwidth efficiency of wireless two-way relay channels. In a compute-and-forward scheme, a relay tries to decode a linear combination composed of transmitted messages from other terminals or relays ...
Hayashi, Masahito   +3 more
core   +1 more source

Responsive Visible‐Wavelength Metasurfaces from Porous Silicon Based on Fano Guided‐Mode Resonance

open access: yesAdvanced Optical Materials, EarlyView.
The article introduces mesoporous silicon metasurfaces (pSi‐MS) supporting Fano guided‐mode resonances in the visible regime. By combining top‐down lithographic patterning of 2D gratings with bottom‐up electrochemical porosification, the approach realizes a new class of responsive metasurfaces, enabling highly sensitive and portable platforms for small
Tomoshree Dash   +4 more
wiley   +1 more source

Practical Quantize-and-Forward Schemes for the Frequency Division Relay Channel

open access: yesEURASIP Journal on Wireless Communications and Networking, 2007
We consider relay channels in which the source-destination and relay-destination signals are assumed to be orthogonal and thus have to be recombined at the destination.
Klein AG, Djeumou B, Lasaulce S
doaj  

Optimal Contract Design for Cooperative Relay Incentive Mechanism under Moral Hazard

open access: yesJournal of Electrical and Computer Engineering, 2015
Cooperative relay can effectively improve spectrum efficiency by exploiting the spatial diversity in the wireless networks. However, wireless nodes may acquire different network information with various users’ location and mobility, channels’ conditions,
Nan Zhao, Minghu Wu, Wei Xiong, Cong Liu
doaj   +1 more source

Cooperation Diversity for Secrecy Enhancement in Cognitive Relay Wiretap Network Over Correlated Fading Channels

open access: yesIEEE Access, 2018
In this paper, we investigate the secrecy performance of dual-hop randomize-and-forward (RaF) cognitive relay multi-channel wiretap networks over correlated fading channels, in which the eavesdropper can wiretap the information from source and relays ...
Mu Li   +4 more
doaj   +1 more source

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