Results 11 to 20 of about 15,151 (141)

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

NOMA-Based User Cooperation With Incremental Hybrid Forwarding Protocols

open access: yesIEEE Open Journal of the Communications Society, 2021
In this paper, we investigate the performance of a non-orthogonal multiple access (NOMA) wireless system, in which signal transmission of a far user is assisted by a near user.
Suyue Li   +5 more
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

Power Allocation for Cognitive Collaborative Network Based on Adaptive Relay [PDF]

open access: yesJisuanji gongcheng, 2017
In relayed transmission systems,power allocation algorithm based on Decode and Forward(DF) increases error in case of incorrect decoding of the information symbols,and the one based on Amplify Forward(AF) amplifies the noise.In order to solve the problem,
LUO Ji
doaj   +1 more source

Optimal Power Allocation for Two-Way Decode-and-Forward OFDM Relay Networks [PDF]

open access: yes, 2012
This paper presents a novel two-way decode-and-forward (DF) relay strategy for Orthogonal Frequency Division Multiplexing (OFDM) relay networks. This DF relay strategy employs multi-subcarrier joint channel coding to leverage frequency selective fading ...
Fei He   +7 more
core   +1 more source

Outage performance of decode‐and‐forward (DF)‐based multiuser spectrum sharing relay system with direct link in the presence of primary users’ power

open access: yesIET Communications, 2018
This study investigates outage probability (OP) of a generalised decode‐and‐forward‐based multiuser spectrum sharing relay system. In practice, the secondary users are exposed to the primary transmitters ’ signals which can measurably affect the OP in the secondary system.
Omid Moghimi Kandelusy   +1 more
openaire   +1 more source

How to Solve the Problem of Bad Performance of Cooperative Protocols at Low SNR

open access: yesEURASIP Journal on Advances in Signal Processing, 2007
We propose some new adaptive amplify-and-forward (AF) and decode-and-forward (DF) protocols using a selection. The new selection criterion is a function of the instantaneous capacities of all possible transmission schemes (with or without cooperation ...
Jean-Claude Belfiore   +2 more
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

Optimal Routing for the Gaussian Multiple-Relay Channel with Decode-and-Forward [PDF]

open access: yes, 2007
In this paper, we study a routing problem on the Gaussian multiple relay channel, in which nodes employ a decode-and-forward coding strategy. We are interested in routes for the information flow through the relays that achieve the highest DF rate.
Motani, Mehul, Ong, Lawrence
core   +2 more sources

Optimal Relay Selection Scheme Based on Hybrid Decode-Amplify-and-Forward [PDF]

open access: yesJisuanji gongcheng, 2017
In order to extend the network life on the base of lower Symbol Error Rate(SER),a relay selection scheme based on Hybrid Decode-Amplify-and-Forward(HDAF) relaying method is proposed.Joint optimization function about receiving Signal to Noise Ratio(SNR ...
SUN Wensheng,LI Leyuan
doaj   +1 more source

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