Results 51 to 60 of about 225,472 (170)
International Journal of Distributed Sensor Networks, 2022 This article investigates the impacts of relay selection schemes on cooperative underlay cognitive radio non-orthogonal multiple access networks, where the partial relay selection scheme, the max–min relay selection scheme and the two-stage relay ...
Dongmei Yang +4 more
doaj +1 more source
Secure full-duplex small-cell networks in a spectrum sharing environment
IEEE Access, 2016 In this paper, we propose three relay selection schemes for full-duplex heterogeneous networks in the presence of multiple cognitive radio eavesdroppers. In this setup, the cognitive small-cell nodes (secondary network) can share the spectrum licensed to
Nam-Phong Nguyen +4 more
doaj +1 more source
Opportunistic Relay Selection with Limited Feedback
, 2007 It has been shown that a decentralized relay selection protocol based on opportunistic feedback from the relays yields good throughput performance in dense wireless networks.
Heath, Jr., Robert W. +2 more
core +3 more sources
Cooperative Beamforming With Predictive Relay Selection for Urban mmWave Communications
IEEE Access, 2019 While millimeter wave (mmWave) communications promise high data rates, their sensitivity to blockage and severe signal attenuation present challenges in their deployment in urban settings.
Anastasios Dimas +2 more
doaj +1 more source
Performance Analysis of Relay Subset Selection for Amplify-and-Forward Cognitive Relay Networks
The Scientific World Journal, 2014 Cooperative communication is regarded as a key technology in wireless networks, including cognitive radio networks (CRNs), which increases the diversity order of the signal to combat the unfavorable effects of the fading channels, by allowing distributed
Kiran Sultan +3 more
doaj +1 more source
Optimal Relay Selection Scheme Based on Hybrid Decode-Amplify-and-Forward [PDF]
Jisuanji 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
Generalized Instantly Decodable Network Coding for Relay-Assisted Networks
, 2013 In this paper, we investigate the problem of minimizing the frame completion delay for Instantly Decodable Network Coding (IDNC) in relay-assisted wireless multicast networks.
Elmahdy, Adel M. +2 more
core +1 more source
Performance Evaluation of Generalized Buffer-State-Based Relay Selection in NOMA-Aided Downlink
IEEE Access, 2019 In this paper, we propose a novel buffer-state-based (BSB) non-orthogonal multiple access (NOMA)-aided downlink scheme for a two-hop cooperative network supporting multiple relay and destination nodes.
Jun Kochi, Ryota Nakai, Shinya Sugiura
doaj +1 more source
Joint source‐pair and relay selection for relay‐assisted network [PDF]
IET Communications, 2020 This study investigates the opportunistic joint source‐pair and relay selection policy for cooperative networks. The investigation considers multi‐user pair and multiple bi‐directional amplify‐and‐forward based relays in the system model. The strategy selects an appropriate user‐pair and relay among N
openaire +1 more source
Opportunistic Relay Selection with Cooperative Macro Diversity
EURASIP Journal on Wireless Communications and Networking, 2010 We apply a fully opportunistic relay selection scheme to study cooperative diversity in a semianalytical manner. In our framework, idle Mobile Stations (MSs) are capable of being used as Relay Stations (RSs) and no relaying is required if the direct path
Chia-Hao Yu +2 more
doaj +2 more sources