Results 71 to 80 of about 40,503 (307)

Power Control Method for Energy Efficient Buffer-Aided Relay Systems

Energies, 2019
In this paper, a power control method is proposed for a buffer-aided relay node (RN) to enhance the energy efficiency of the RN system. By virtue of a buffer, the RN can reserve the data at the buffer when the the channel gain between an RN and a ...
Jingon Joung, Han Lim Lee, Jian Zhao, Xin Kang   +3 more
doaj   +1 more source

Relay selection schemes relying on adaptive modulation and imperfect channel knowledge for cooperative networks

, 2012
Cooperative MAC protocols have been shown to increase the attainable network throughput and to reduce the outage probability when perfect Channel State Information (CSI) is available either at the source station or at candidate relays.
Crismani, Alessandro, Alessandro Crismani, Fulvio Babich, Babich, Fulvio, L. Hanzo, Hanzo, Lajos, Lajos Hanzo   +6 more
core   +1 more source

Metasurface‐Enabled Active‐Like Passive Radar

Advanced Science, EarlyView.
A programmable space‐time‐coding metasurface embeds distinct spatiotemporal tags into ambient wireless signals, allowing passive radar to operate in an active‐like manner. By enabling code‐correlated reconstruction under interference, the approach supports robust real‐time UAV tracking in complex environments and points to intelligent, low‐power ...
Mingyi Li, Jiawen Xu, Hanting Zhao, Xu Zhao, Yanjin Chen, Tie Jun Cui, Vincenzo Galdi, Lianlin Li   +7 more
wiley   +1 more source

Tumor‐Infiltrating mregDCs Restrain Anti‐Tumor Immunity in Early Relapse HCC

Advanced Science, EarlyView.
Tumor‐infiltrating mregDCs are regulated by the TNFR2‐non‐canonical NF‐κB axis, which is mediated by TNF‐α secreted by CD161+CD8+ T cells. These mregDCs recruit CD161+CD8+ T cells via the CCL20‐CCR6 axis, forming a positive feedback loop that enhances immunosuppression, promotes early recurrence of HCC, and further confirms TNFR2 as a key therapeutic ...
Zefan Zhang, Lin Ding, Yu Zhong, Haokang Feng, Linglong Huang, Waidong Huang, Chunqing Wang, Arne Östman, Beili Wang, Jian Zhou, Jia Fan, Wei Guo, Liang Wu, Yunfan Sun   +13 more
wiley   +1 more source

Physical Layer Security Performance Analysis of the FD-Based NOMA-VC System

IEEE Access, 2019
In this paper, we consider the secrecy outage probability (SOP) of a cooperative non-orthogonal multiple access (NOMA) vehicular communication (VC) system, where the relay is working in either half-duplex (HD) or full-duplex (FD) mode. We assume that all
Wenwu Xie, Jianwu Liao, Chao Yu, Peng Zhu, Xinzhong Liu   +4 more
doaj   +1 more source

Hybrid AF/DF Cooperative Relaying Technique with Phase Steering for Industrial IoT Networks

Energies, 2021
For the next generation of manufacturing, the industrial internet of things (IoT) has been considered as a key technology that enables smart factories, in which sensors transfer measured data, actuators are controlled, and systems are connected ...
Sangku Lee, Janghyuk Youn, Bang Chul Jung   +2 more
doaj   +1 more source

Near-Capacity Network Coding for Cooperative Multi-User Communications [PDF]

, 2011
In this contribution, we investigate Near-Capacity Multiuser Network-coding (NCMN) based systems using an Irregular Convolutional Code, a Unity-Rate Code and M-ary Phase-Shift Keying.
Joao Luiz Rebelatto, Yonghui Li, Soon Xin Ng, Luiz Rebelatto, Joao, Ng, Soon Xin, Nguyen, Hung, Li, Yonghui, Hung Viet Nguyen, Hanzo, Lajos, Lajos Hanzo   +9 more
core   +1 more source

Beyond Potency: Emerging Determinants and Optimization Strategies Enhancing Therapeutic Efficacy of Adult Stem Cells

Advanced Science, EarlyView.
Adult stem cell therapy requires more than high in vitro potency. This review proposes a systems framework in which cell‐intrinsic programs, instructive microenvironmental cues, and pre‐/post‐delivery engineering are co‐designed under standardized translational rules.
Soo‐Rim Kim, Yun Jae Jung, Hwa‐Yong Lee   +2 more
wiley   +1 more source

Multiple-Symbol Differential Sphere Detection for the Amplify-and-Forward Cooperative Uplink [PDF]

, 2009
It is widely recognized that the differential amplify-and-forward (DAF) transmission scheme is capable of providing a superior performance compared to classic direct transmissions employing differential detection in slow-fading channels and in fact it ...
Wang, Li, Li Wang, Hanzo, Lajos, Lajos Hanzo   +3 more
core   +1 more source

Synergistic Interface Engineering via Buffer Layer and UVO Treatment for High‐Performance PbS Quantum Dot Near‐Infrared Photodiodes

Advanced Science, EarlyView.
A dual‐interface strategy combining a solvent‐orthogonal Poly‐TPD buffer with UV–ozone tuning of PbS‐EDT reconstructs interfacial energetics and defect chemistry in PbS CQD photodiodes. The optimized interface suppresses shunt‐ and trap‐related leakage, reduces noise, and enables high‐detectivity near‐infrared detection with imaging capability ...
Chuan Wei, Jun Han, Ning Feng, Li Yan, Hao Sun, Yuanhong Gao, Meili Xu, Guodan Wei, Hong Meng   +8 more
wiley   +1 more source