Results 81 to 90 of about 15,298 (164)

Leveraging on the Impact of Imperfect Channel Estimation for MIMO Relaying Systems

open access: yesIEEE Access, 2019
In this paper, we study a multi-user multiple-input multiple-output (MIMO) dual-hop wireless relaying system, where the decode-and-forward protocol is applied at the intermediate relay node. The well-known MIMO spatial multiplexing technique is employed,
Nikolaos I. Miridakis   +2 more
doaj   +1 more source

Massive MIMO for Full-Duplex Cellular Two-Way Relay Network: A Spectral Efficiency Study

open access: yesIEEE Access, 2017
This paper presents the new analysis of the applications of massive multiple-input-multiple-output (MIMO) in full-duplex (FD) cellular two-way relay networks, and sheds valuable insights on the interactions between massive MIMO, and relay and duplex ...
Zhaoxi Fang   +4 more
doaj   +1 more source

Comparative analysis of intelligent reflecting surfaces and AF/DF relaying for energy efficient wireless communication

open access: yesEURASIP Journal on Wireless Communications and Networking
This paper presents a comparative analysis of intelligent reflecting surface (IRS) technology versus conventional amplify-and-forward (AF) and decode-and-forward (DF) relay schemes in wireless communication.
Kuldeep Yadav   +2 more
doaj   +1 more source

Wireless Energy Harvesting Two-Way Relay Networks with Hardware Impairments

open access: yesSensors, 2017
This paper considers a wireless energy harvesting two-way relay (TWR) network where the relay has energy-harvesting abilities and the effects of practical hardware impairments are taken into consideration.
Chunling Peng, Fangwei Li, Huaping Liu
doaj   +1 more source

Performance of Best Relay Selection Between AF and DF Methods in 5G Beyond Perspective

open access: yesJurnal Jaringan Telekomunikasi
In wireless cooperative communication, relay selection plays a crucial role in enhancing system performance by improving signal reliability and coverage.
nurul hidayati
doaj  

Wireless Powered Relaying Networks Under Imperfect Channel State Information: System Performance and Optimal Policy for Instantaneous Rate [PDF]

open access: yesRadioengineering, 2017
In this investigation, we consider wireless powered relaying systems, where energy is scavenged by a relay via radio frequency (RF) signals. We explore hybrid time switching-based and power splitting-based relaying protocol (HTPSR) and compare ...
D. T. Do   +3 more
doaj  

Outage Probability of Dual-Hop Relay System with Interference and Feedback Delay in Satellite M2M Networks

open access: yesInternational Journal of Distributed Sensor Networks, 2013
The machine-to-machine (M2M) communication enables information exchange between machine devices, which can be carried out without or with minimal human interaction.
Yuan Lin   +4 more
doaj   +1 more source

Optimal relay selection scheme and outage probability analysis in cooperative wireless networks

open access: yesDianxin kexue, 2018
Optimal relay selection can effectively improve the system performance in the communication network with cooperative relays from the view of physical layer security.The optimal relay selection schemes for relay transmission system with multiple single ...
Youhong FENG   +5 more
doaj   +2 more sources

Spatial Interference Alignment in Relay-Assisted Multi-Cell Multi-User Networks

open access: yesInternational Journal of Information and Communication Technology Research, 2016
In this paper, the spatial interference alignment (IA) is investigated in the downlink (DL) of a relay-assisted multi-cell multi-user network. The transmission from the base station (BS) to the mobile station (MS) takes place in two phases with the help ...
Ali Golestani   +2 more
doaj  

Two-Relay Decode-and-Forward for the Degraded Broadcast Channel: Achievable Rate Region With Orthogonal Channel Components

open access: yesIEEE Open Journal of the Communications Society
Relay-aided transmission is a promising approach to extend coverage and increase throughput in wireless networks, yet characterizing the achievable rate region of broadcast channels with multiple decode-and-forward relays over orthogonal links remains an
Mohammad Al Bataineh   +2 more
doaj   +1 more source

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