Results 61 to 70 of about 224,400 (269)
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 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
Advanced Materials Technologies, EarlyView.Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu +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 +2 more
doaj +1 more source
Chemically Doped Conductive Polymers for Wearable Health Monitoring
Advanced Materials Technologies, EarlyView.Among conductive polymers, poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), polyaniline (PANI), and polypyrrole (PPy) are the most studied and applied. Chemical doping significantly boosts intrinsic conductivity and mechanical robustness.
Mengdi Zuo +5 more
wiley +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
, 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 +5 more
core +1 more source
Smart Closed‐Loop Systems in Personalized Healthcare: Advances and Outlook
Advanced Materials Technologies, EarlyView.A smart closed‐loop e‐textile integrates multimodal sensing, onboard processing, wireless communication, and wearable power to enable real‐time physiological/biochemical monitoring and feedback‐controlled therapy. ABSTRACT Smart textiles represent a revolutionary frontier in healthcare, seamlessly blending fabric and advanced technologies to create ...
Safoora Khosravi +12 more
wiley +1 more source
Advanced Optical Materials, EarlyView.Possibilities for ablation‐free microforming of borosilicate glass using ultrashort laser pulses are presented. Depending on the laser parameters and scanning strategy, surface structures with profile heights of up to 20 µm could be produced. The work provides a comprehensive experimental and analytical characterization of the microforming process ...
Marina Skiba +5 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 +3 more
doaj +1 more source