Results 51 to 60 of about 224,400 (269)

Dual Relay Selection for Cooperative NOMA With Distributed Space Time Coding

IEEE Access, 2018
We consider a two-user multi-relay cooperative non-orthogonal multiple access (NOMA) network with distributed space-time coding. Two dual-relay selection strategies are proposed for cooperative NOMA, namely, two-stage dual relay selection with fixed ...
Jing Zhao, Zhiguo Ding, Pingzhi Fan, Zheng Yang, George K. Karagiannidis   +4 more
doaj   +1 more source

Opportunistic relay selection in multicast relay networks using compressive sensing [PDF]

2014 IEEE Global Communications Conference, 2014
Relay selection is a simple technique that achieves spatial diversity in cooperative relay networks. However, for relay selection algorithms to make a selection decision, channel state information (CSI) from all cooperating relays is usually required at a central node. This requirement poses two important challenges.
Elkhalil, Khalil, Eltayeb, Mohammed E, Shibli, Hussain, Bahrami, Hamid Reza, Al-Naffouri, Tareq Y   +4 more
openaire   +1 more source

Mesoporous Silica Nanoparticles in Biomedicine: Advances and Prospects

Advanced Materials, EarlyView.
Mesoporous silica nanoparticles offer unique properties like high surface area, tunable pores, and functionalization. They excel in drug delivery, tissue engineering, and stimuli‐responsive therapies, enabling targeted and controlled treatments. With roles in cancer therapy and diagnostics, their clinical translation requires addressing challenges in ...
Miguel Manzano, María Vallet‐Regí
wiley   +1 more source

Buffer-Aided Successive Relay Selection Scheme for Energy Harvesting IoT Networks

IEEE Access, 2019
In this paper, we analyze the impact of buffer-aided full-duplex successive relay selection schemes with energy harvesting capability of relay nodes in amplifying and forward (AF) and decode and forward (DF) relaying environments for the Internet of ...
Ghulam Shabbir, Jamil Ahmad, Waseem Raza, Yasar Amin, Adeel Akram, Jonathan Loo, Hannu Tenhunen   +6 more
doaj   +1 more source

Energy-Aware Wireless Relay Selection in Load-Coupled OFDMA Cellular Networks

, 2017
We investigate transmission energy minimization via optimizing wireless relay selection in orthogonal-frequency-division multiple access (OFDMA) networks. We take into account the impact of the load of cells on transmission energy.
Pappas, Nikolaos, Värbrand, Peter, You, Lei, Yuan, Di   +3 more
core   +2 more sources

Functional Metal Complexes for Solar–Light‐Driven Energy Conversion

Advanced Materials, EarlyView.
This review provides an exhaustive summary of the recent advancements of functional metal complexes in solar‐to‐electrical, ‐chemical, and ‐thermal energy conversion, comprising material categories, design strategies, underlying principles of operation, and identified improvement of performances.
Yanyan Qin, Dou Luo, Miao Zhang, Wai‐Yeung Wong   +3 more
wiley   +1 more source

Analysis of relay selection schemes in underlay cognitive radio non-orthogonal multiple access networks

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, Cheng Li, Baoquan Ren, Hongjun Li, Kefeng Guo   +4 more
doaj   +1 more source

Improving Link Reliability through Network Coding in Cooperative Cellular Networks [PDF]

, 2012
The paper proposes a XOR-based network coded cooperation protocol for the uplink transmission of relay assisted cellular networks and an algorithm for selection and assignment of the relay nodes. The performances of the cooperation protocol are expressed
Bota, V., Hosu, A., Kiss, Zs. I., Polgar, Zs. A., Stef, M. P.   +4 more
core   +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., Lo, Caleb K., Vishwanath, Sriram   +2 more
core   +3 more sources

Pattern Formation in Non‐Equilibrium Architected Materials

Advanced Materials Technologies, EarlyView.
This article demonstrates an artificial mechanical system ‐ a robotic metamaterial ‐ as an accessible and versatile platform within which to explore and prescribe the reaction‐diffusion driven pattern formation hitherto associated with comparatively less accessible and versatile non‐equilibrium biological and chemical systems.
Vinod Ramakrishnan, Michael J. Frazier
wiley   +1 more source