Results 11 to 20 of about 15,298 (164)
Cooperative Transmission and Performance Analysis Based on Superposition Coding [PDF]
Jisuanji 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
Optimal Power Allocation for Two-Way Decode-and-Forward OFDM Relay Networks [PDF]
, 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
Simulasi dan Analisis Transmisi Multihop Mobile WiMAX Dengan Metode Hybrid
Jurnal 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
NOMA-Based User Cooperation With Incremental Hybrid Forwarding Protocols
IEEE 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
Power Allocation for Cognitive Collaborative Network Based on Adaptive Relay [PDF]
Jisuanji 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 Routing for the Gaussian Multiple-Relay Channel with Decode-and-Forward [PDF]
, 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
How to Solve the Problem of Bad Performance of Cooperative Protocols at Low SNR
EURASIP 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
IEEE 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
IET 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
IEEE Photonics Journal, 2022 The scheme of combining relay and optical code division multiple access (OCDMA) is one of the effective methods to improve the reliability and security of free space optical (FSO) communication system.
Jianhua Ji +4 more
doaj +1 more source