Results 21 to 30 of about 371,406 (280)

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

Exact Performance Analysis of Amplify-and-Forward Bidirectional Relaying over Nakagami-m Fading Channels with Arbitrary Parameters

open access: yesEnergies, 2019
The exact performance of amplify-and-forward (AF) bidirectional relay systems is studied in generalized and versatile Nakagami-m fading channels, where the parameter m is an arbitrary positive number.
Dong Qin, Yuhao Wang, Tianqing Zhou
doaj   +1 more source

Performance Analysis of Wireless Power Transfer Enabled Dual Hop Relay System Under Generalised Fading Scenarios

open access: yesIEEE Access, 2022
Dual-hop relay communication systems have received extensive research attention due to their property of improving system reliability, spectral and power efficiency.
Daljeet Singh   +4 more
doaj   +1 more source

Linear Precoding Designs for Amplify-and-Forward Multiuser Two-Way Relay Systems [PDF]

open access: yes, 2011
Two-way relaying can improve spectral efficiency in two-user cooperative communications. It also has great potential in multiuser systems. A major problem of designing a multiuser two-way relay system (MU-TWRS) is transceiver or precoding design to ...
Meixia Tao   +3 more
core   +2 more sources

Converging Underwater and FSO Ground Communication Links [PDF]

open access: yes, 2019
We propose a new combined underwater-atmospheric optical communication link for providing a high speed optical connectivity between onshore and sumerge systems.
Castillo-Vazquez, Miguel   +4 more
core   +1 more source

PERFORMANCE ANALYSIS OF COOPERATION SCHEMES IN EAVESDROPPER ASSISTED RELAY CHANNEL [PDF]

open access: yesICTACT Journal on Communication Technology, 2014
The prominence of the wireless communication has been urging the monotonically increasing demand of security and privacy. In wireless systems, the notion of perfect secrecy of information with respect to illegitimate nodes can be ensured via physical ...
Vaibhav Kumar Gupta, Poonam Jindal
doaj  

Simultaneous Wireless Information and Power Transfer for Cooperative Relay Networks With Battery

open access: yesIEEE Access, 2017
In this paper, we investigate simultaneous wireless information and power transfer in a cooperative communication network consisting of one source, one battery-enabled relay, and one destination node. An amplify-and-forward relaying method is considered,
Sumaila Mahama   +2 more
doaj   +1 more source

Mobile User Connectivity in Relay-Assisted Visible Light Communications

open access: yesSensors, 2018
In this paper, we investigate relay-assisted visible light communications (VLC) where a mobile user acts as a relay and forwards data from a transmitter to the end mobile user.
Petr Pešek   +5 more
doaj   +1 more source

Full Duplex AF and DF Relaying Under Channel Estimation Errors for V2V Communications

open access: yesIEEE Access, 2018
In this paper, we investigate the outage performance of full-duplex (FD) and half-duplex (HD) vehicle to vehicle (V2V) networks. We consider two vehicular communication scenarios with the assistance of roadside unit (RSU), i.e., RSU-to-vehicle-to-vehicle
Siye Wang, Dandi Wang, Chao Li, Wenbo Xu
doaj   +1 more source

Energy Efficient Joint Power Optimization for Full-Duplex Relaying

open access: yesIEEE Access, 2019
Full-duplex (FD) relaying is a promising technology for the next generation communication systems. In this paper, we aim to jointly optimize the source and relay transmit powers to maximize the energy efficiency (EE) for both amplify-and-forward (AF) and
Zhenyao He   +3 more
doaj   +1 more source

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