Results 61 to 70 of about 224,382 (271)

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, Chinmoy Kundu, Hien Quoc Ngo, Trung Q. Duong, Berk Canberk   +4 more
doaj   +1 more source

A Buffer-aided Successive Opportunistic Relay Selection Scheme with Power Adaptation and Inter-Relay Interference Cancellation for Cooperative Diversity Systems

, 2014
In this paper we consider a simple cooperative network consisting of a source, a destination and a cluster of decode-and-forward half-duplex relays. At each time-slot, the source and (possibly) one of the relays transmit a packet to another relay and the
Charalambous, Themistoklis, Johansson, Mikael, Krikidis, Ioannis, Nomikos, Nikolaos, Skoutas, Dimitrios, Vouyioukas, Demosthenes   +5 more
core   +1 more source

Opportunistic DF-AF selection relaying with optimal relay selection in Nakagami-m fading environments [PDF]

2012 1st IEEE International Conference on Communications in China (ICCC), 2012
Proc.
Zhang, Tian, Chen, Wei, Cao, Zhigang
openaire   +2 more sources

Holographic Whole‐Object Photopolymerization Preserving Director Alignment in Liquid Crystalline Actuators

Advanced Materials, EarlyView.
Holographic microlithography enables the fabrication of fully connected 3D liquid crystalline structures in a single exposure. The process maintains precise control over the director orientation within the entire object, preventing local director distortions typically observed in sequential printing.
Lovish Gulati, Junhee Lee, Reza Norouzikudiani, Jianfeng Li, Carlos Sánchez Somolinos, Antonio DeSimone, Kai Melde, Alexander Song, Peer Fischer   +8 more
wiley   +1 more source

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, Dionysios S. Kalogerias, Athina P. Petropulu   +2 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

Serotonergic System‐Targeted Nucleic Acid Hydrogel Coordinates Excitability Restoration and Circuit Reconstruction for Spinal Cord Injury Therapy

Advanced Materials, EarlyView.
The study reports a DNA/RNA heteroduplex hydrogel (SeroPTEN‐CG) that undergoes DNase‐mediated hydrogel‐to‐nanogel transition for spinal cord injury therapy by targeting the serotonergic system, combining 5‐hydroxytryptamine (5‐HT)‐mediated excitability restoration to reactivate dormant interneurons with phosphatase and tensin homolog (PTEN)‐targeted ...
Chunlin Li, Xiaoqing Zhao, Kai Jiang, Haixia Kang, Shuo Liu, Linlin Jiang, Baoshuai Bai, Haonan Cui, Ziyang Zhang, Menglei Dong, Ruizhi Zhang, Chenbo Zou, Shenghui Shang, Chi Zhang, Xiangchuang Fan, Lijuan Zhu, Huiquan Duan, Chuan Zhang, Shiqing Feng, Hengxing Zhou   +19 more
wiley   +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, Ijaz Mansoor Qureshi, Aqdas Naveed Malik, Muhammad Zubair   +3 more
doaj   +1 more source

Adaptive Mode Selection and Power Allocation in Bidirectional Buffer-aided Relay Networks

, 2013
In this paper, we consider the problem of sum rate maximization in a bidirectional relay network with fading. Hereby, user 1 and user 2 communicate with each other only through a relay, i.e., a direct link between user 1 and user 2 is not present.
Ikhlef, Aissa, Jamali, Vahid, Schober, Robert, Zlatanov, Nikola   +3 more
core   +1 more source

Advancements in TLP Bonding for Power Electronics Die‐Attach Applications

Advanced Materials Technologies, EarlyView.
Transient Liquid Phase (TLP) bonding is gaining traction as a lead‐free die‐attach technology in power electronics packaging. This review examines the state of TLP bonding, its key elements, reliability aspects, and practical limitations. This review also highlights emerging trends, such as nanostructured interfaces, that may improve scalability of TLP
Fatin Battal, Davey Boss, René H. Poelma, Elias Vlieg, John J. Schermer   +4 more
wiley   +1 more source