Results 41 to 50 of about 13,079,526 (282)

Power Allocation in Cell-Free Massive MIMO: A Deep Learning Method

IEEE Access, 2020
Massive multiple-input multiple-output (MIMO) is a key technology in 5G. It enables multiple users to be served in the same time-frequency block through precoding or beamforming techniques, thus increasing capacity, reliability and energy efficiency.
Yu Zhao, I. Niemegeers, S. H. D. de Groot   +2 more
semanticscholar   +1 more source

Three-dimensional evolution of hydrological drought and its linkage to meteorological drought in the Ganjiang River Basin, China

Journal of Hydrology: Regional Studies
Study region: Ganjiang River Basin (GRB), China. Study focus: This study investigated the spatiotemporal evolution of hydrological drought (HD) and its relationship with meteorological drought (MD) across the GRB within a three-dimensional spatiotemporal
Weilin Liu, Jingrong Zhang, Zhanxiong Zhou, Pengcheng Zhong, Degao Sun, Lina Liu   +5 more
doaj   +1 more source

Distributed beamforming and power allocation for cooperative networks. [PDF]

, 2008
Cooperative diversity systems rely on using relay nodes to relay copies of transmitted information to the destination such that each copy experiences different channel fading, hence increasing the diversity of the system.
Ding, Zhiguo, Chin, Woon Hau, Leung, K. K.   +2 more
core   +2 more sources

Low-Complexity Power Allocation in NOMA Systems With Imperfect SIC for Maximizing Weighted Sum-Rate

IEEE Access, 2019
In this paper, we investigate the power allocation for maximizing weighted sum rate (WSR) in downlink multiple carriers non-orthogonal multiple access (MC-NOMA) systems with imperfect successive interference cancellation (SIC).
Xiaoming Wang, Ruilu Chen, Youyun Xu, Qingmin Meng   +3 more
doaj   +1 more source

Impact of Initial Treatment Setting on Survival in Relapsed Pediatric and AYA Bone Sarcomas: A Secondary Analysis of a Prospective Clinical Trial

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Outcomes in relapsed or refractory pediatric and AYA bone sarcomas remain poor, and the impact of early referral to specialized sarcoma centers on survival is unclear. Early centralization of care may improve local and systemic treatment quality, but evidence in this population is limited.
Justyna Antoniuk‐Majchrzak, Katarzyna Bilska, Tomasz Koziński, Jadwiga Węcławek‐Tompol, Dorota Sega‐Pondel, Radosław Chaber, Wanda Badowska, Katarzyna Rosłan, Hanna Koseła‐Paterczyk, Anna Raciborska   +9 more
wiley   +1 more source

Land use change patterns and landscape ecological risk assessment in the process of watershed ecological compensation

Frontiers in Environmental Science
As China’s pioneering cross-provincial ecological compensation zone, the upper Xin’an River Basin harbors immense ecological value. However, the long-term effects of its compensation policies on land use dynamics and associated landscape ecological risks
Haitao Chen, Haitao Chen, Jiaxue Ren, Wenjing Ren, Wenjing Ren, Hui Luan, Hui Luan, Liancong Luo, Liancong Luo   +8 more
doaj   +1 more source

Effectiveness of Resistance Intradialytic Exercise Compared to Aerobic Intradialytic Exercise for Patients With Chronic Kidney Disease: A Randomized Controlled Clinical Trial

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Patients with chronic kidney disease undergoing hemodialysis commonly experience reduced physical function, fatigue, poor sleep quality, and impaired health‐related quality of life. Intradialytic exercise has been proposed as a non‐pharmacological strategy to improve these outcomes.
Klebson da Silva Almeida, Gisela Cristiane Miyamoto, Daniel da Costa Torres, Ian Setubal Reis Chaves, Jonas do Carmo Paschoalin, Braúlio Lima Nascimento, Luciana Dias Chiavegato   +6 more
wiley   +1 more source

Comparative Evaluation of Hemodiafiltration, Hemoperfusion, and Standard Hemodialysis on Efficacy, Inflammatory Control, Dialysis Adequacy, and Safety in End‐Stage Renal Disease: A Prospective Observational Study

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo, Weisi Dai, Jie Mao, Mei Ye, Xingshan Lu, Xiaocui Zhang   +5 more
wiley   +1 more source

Hydrological drought dynamic using copula functions and drought center migration in the Ganjiang river basin

Scientific Reports
Understanding the spatiotemporal evolution of hydrological drought is essential for effective drought management. This study investigated hydrological drought in Ganjiang River Basin (GRB), China from 1959 to 2019 using observed and SWAT-simulated runoff
Weilin Liu, Jingrong Zhang, Zhanxiong Zhou, Shengnan Zhu, Lina Liu, Jianzhu Li   +5 more
doaj   +1 more source

CNN-Based End-to-End CPU-AP-UE Power Allocation for Spectral Efficiency Enhancement in Cell-Free Massive MIMO Networks

Mathematics
Cell-free massive multiple-input multiple-output (MIMO) networks eliminate cell boundaries and enhance uniform quality of service by enabling cooperative transmission among access points (APs). In conventional cellular networks, user equipment located at
Yoon-Ju Choi, Ji-Hee Yu, Seung-Hwan Seo, Seong-Gyun Choi, Hye-Yoon Jeong, Ja-Eun Kim, Myung-Sun Baek, Young-Hwan You, Hyoung-Kyu Song   +8 more
doaj   +1 more source