Results 11 to 20 of about 6,292 (180)

Cognitive Multiuser Energy Harvesting Decode-and-Forward Relaying System With Direct Links

open access: yesIEEE Access, 2018
In this paper, we study an underlay cognitive energy harvesting decode-and-forward (DF) relaying communications system with multiple secondary users (SUs) and a primary destination.
Dongqing Xie   +3 more
semanticscholar   +3 more sources

Energy Efficiency Analysis and Optimization for Decode-and-Forward Relay Transmission System [PDF]

open access: yesJisuanji gongcheng, 2017
This paper studies the Energy Efficiency(EE) of Decode-and-Forward One-Way Relay Transmission(DF-OWRT) and Decode-and-Forward Two-Way Relay Transmission(DF-TWRT) systems under strict delay constraint.It maximizes the EE by jointly optimizing the ...
YANG Jie,CHEN Rui,GUO Lihong,RUI Xiongli
doaj   +1 more source

Hybrid Protocols for Relay-Assisted Non-Orthogonal Multiple Access in Power Line Communications

open access: yesIEEE Open Journal of the Communications Society, 2023
We study the outage probability performance of hybrid protocols in relay-assisted, non-orthogonal multiple access (NOMA)-based power line communication. In particular, we consider two networks with source, relay and destination nodes, namely, cooperative
Roopesh Ramesh   +2 more
doaj   +1 more source

Performance Comparison of Relay-Based Covert Communications: DF, CF and AF. [PDF]

open access: yesSensors (Basel), 2023
In this paper, we investigate the performance of covert communications in different types of a relay system: decode-and-forward (DF), compress-and-forward (CF) and amplify-and-forward (AF).
Moon J.
europepmc   +2 more sources

Joint Channel-Network Coding for the Gaussian Two-Way Two-Relay Network

open access: yesEURASIP Journal on Wireless Communications and Networking, 2010
New aspects arise when generalizing two-way relay network with one relay to two-way relay network with multiple relays. To study the essential features of the two-way multiple-relay network, we focus on the case of two relays in our work. The problem of
Shum KennethW, Hu Ping, Sung ChiWan
doaj   +2 more sources

Covert Communications in a Hybrid DF/AF Relay System. [PDF]

open access: yesSensors (Basel)
In this paper, we study covert communications in a hybrid decode-and-forward (DF)/ amplify-and-forward (AF) relay system. The considered relay in normal operation forwards messages from a source node to a destination node in either DF or AF mode on ...
Moon J.
europepmc   +2 more sources

Cooperative Detection for Primary User in Cognitive Radio Networks

open access: yesEURASIP Journal on Wireless Communications and Networking, 2009
We propose two novel cooperative detection schemes based on the AF (Amplify and Forward) and DF (Decode and Forward) protocols to achieve spatial diversity gains for cognitive radio networks, which are referred to as the AF-CDS, (AF-based Cooperative ...
Zhu Jia, Zou Yulong, Zheng Baoyu
doaj   +2 more sources

Multilevel Coding for the Full-Duplex Decode-Compress-Forward Relay Channel

open access: yesEntropy, 2017
The Decode-Compress-Forward (DCF) is a generalization of Decode-Forward (DF) and Compress-Forward (CF). This paper investigates conditions under which DCF offers gains over DF and CF, addresses the problem of coded modulation for DCF, and evaluates the ...
Ahmed Attia Abotabl, Aria Nosratinia
doaj   +1 more source

Cooperative Transmission and Performance Analysis Based on Superposition Coding [PDF]

open access: yesJisuanji gongcheng, 2020
In the traditional three-node cooperative communication model,relay nodes forward data for free for source nodes,which reduces the spectral efficiency.To address the problem,this paper proposes a cooperative transmission mode based on the Decode-and ...
RUI Xiongli, CAO Xuehong
doaj   +1 more source

Simulasi dan Analisis Transmisi Multihop Mobile WiMAX Dengan Metode Hybrid

open access: yesJurnal Elektronika dan Telekomunikasi, 2016
Makalah ini membahas tentang pengembangan relay station untuk transmisi downlink Mobile WiMAX dengan menggunakan metode hybrid, yaitu metode transmisi yang menggunakan tiga buah transmisi.
Muhamad Asvial, Taufiq Nugroho
doaj   +1 more source

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