Results 11 to 20 of about 45,050 (281)

A new blind algorithm for channel estimation in OFDM-based amplify-and-forward two-way relay networks

open access: yesEURASIP Journal on Wireless Communications and Networking, 2018
In this paper, we propose a blind channel estimation algorithm for the amplify-and-forward (AF) two-way relay network (TWRN) which consists of two terminal nodes and one relay node.
Tzu-Chiao Lin, See-May Phoong
doaj   +1 more source

Coarse wavelength division multiplexer on silicon-on-insulator for 100 GbE [PDF]

open access: yes, 2015
A four-channel cascaded MZl based de-multiplexer at O-band with coarse channel spacing of 20 nm and band flatness of 13 nm is demonstrated on silicon-on-insulator.
Absil, P   +4 more
core   +2 more sources

Effects of in-line deflectors on the overall performance of a channel heat exchanger

open access: yesEngineering Applications of Computational Fluid Mechanics, 2021
The turbulent convective thermal transfer in channel heat exchangers (CHEs) is studied numerically via the CFD (Computational Fluid Dynamics) method.
Younes Menni   +3 more
doaj   +1 more source

Stochastic Bioimpedance-Based Channel Model of the Human Body for Galvanic Coupling

open access: yesJournal of Electrical Bioimpedance, 2021
Human body communication (HBC) uses the human body as the channel to transfer data. Extensive work has been done to characterize the human body channel for different HBC techniques and scenarios. However, statistical channel bioimpedance characterisation
Roopnarine Aaron, Rocke Sean A.
doaj   +1 more source

Time-Frequency Based Channel Estimation for High-Mobility OFDM Systems—Part II: Cooperative Relaying Case

open access: yesEURASIP Journal on Advances in Signal Processing, 2010
We consider the estimation of time-varying channels for Cooperative Orthogonal Frequency Division Multiplexing (CO-OFDM) systems. In the next generation mobile wireless communication systems, significant Doppler frequency shifts are expected the channel ...
Erol Önen   +2 more
doaj   +2 more sources

Capacity of DNA Data Embedding Under Substitution Mutations [PDF]

open access: yes, 2011
A number of methods have been proposed over the last decade for encoding information using deoxyribonucleic acid (DNA), giving rise to the emerging area of DNA data embedding.
Balado, Félix
core   +3 more sources

Differential Amplify-and-Forward Relaying in Time-Varying Rayleigh Fading Channels [PDF]

open access: yes, 2013
This paper considers the performance of differential amplify-and-forward (D-AF) relaying over time-varying Rayleigh fading channels. Using the auto-regressive time-series model to characterize the time-varying nature of the wireless channels, new weights
Avendi, M. R., Nguyen, Ha H.
core   +1 more source

Path Loss Model for 3.5 GHz and 5.6 GHz Bands in Cascaded Tunnel Environments

open access: yesSensors, 2022
An important and typical scenario of radio propagation in a railway or subway tunnel environment is the cascaded straight and curved tunnel. In this paper, we propose a joint path loss model for cascaded tunnels at 3.5 GHz and 5.6 GHz frequency bands. By
Jingyuan Qian   +3 more
doaj   +1 more source

Reconfigurable Intelligent Surface Reliable Cooperative Beamforming Based on Cascade/Parallel Hybrid Networking

open access: yesIEEE Access, 2023
Reconfigurable intelligent surface (RIS) is regarded as one of the main enablers in the context of 6G wireless communications. It converts the conventionally uncontrolled wireless channel into a programmed channel.
Mostafa M. Elsherbini   +2 more
doaj   +1 more source

End-to-End Physical Layer Authentication for Dual-Hop Wireless Networks

open access: yesIEEE Access, 2019
End-to-end (E2E) physical layer authentication for multi-hop wireless networks is still not well-explored by now. Like one step forward in this direction, this paper focuses on the E2E physical layer authentication in a dual-hop wireless network with an ...
Pinchang Zhang   +3 more
doaj   +1 more source

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