Results 41 to 50 of about 5,070,983 (261)
A Random Access Protocol for Pilot Allocation in Crowded Massive MIMO Systems [PDF]
IEEE Transactions on Wireless Communications, 2016 The massive multiple-input multiple-output (MIMO) technology has great potential to manage the rapid growth of wireless data traffic. Massive MIMO achieves tremendous spectral efficiency by spatial multiplexing many tens of user equipments (UEs).
Emil Björnson +4 more
semanticscholar +1 more source
Energies, 2017 With the incremental introduction of solar photovoltaic (PV) generators into existing power systems, and their fast-growing share in the gross electricity generation, system voltage stability has become a critical issue.
Yu Li, Masato Ishikawa
doaj +1 more source
IEEE Access, 2021 The recent demand for connections to a huge number of users with very high data rates have motivated research communities to investigate communications into the higher frequency bands, such as millimeter waves and TeraHertz (THz) bands.
Mohannad Alzard +3 more
doaj +1 more source
Optimal Power Allocation for Artificial Noise Under Imperfect CSI Against Spatially Random Eavesdroppers [PDF]
IEEE Transactions on Vehicular Technology, 2016 In this paper, we study the secure multiantenna transmission with artificial noise (AN) under imperfect channel state information (CSI) in the presence of spatially randomly distributed eavesdroppers.
Tongxing Zheng, Huiming Wang
semanticscholar +1 more source
فصلنامه دانشگاه علوم پزشکی جهرم, 2021 Introduction: Clinical trials are a common type of medical research that has grown in number over the past decade. Intervention studies or trials are the most authoritative type of epidemiological studies and provide the strongest evidence of causation ...
razieh zahedi +2 more
doaj
Study designs: Part 5 – interventional studies (II)
Perspectives in Clinical Research, 2019 In the fifth piece of this series on research study designs, we continue the discussion on interventional studies (clinical trials), in which the investigator decides whether or not a particular participant receives the exposure (or intervention).
Rakesh Aggarwal, Priya Ranganathan
doaj +1 more source
The Optimality of Blocking Designs in Equally and Unequally Allocated Randomized Experiments with General Response [PDF]
arXiv, 2022 We consider the performance of the difference-in-means estimator in a two-arm randomized experiment under common experimental endpoints such as continuous (regression), incidence, proportion and survival. We examine performance under both equal and unequal allocation to treatment groups and we consider both the Neyman randomization model and the ...
arxiv
Psychotherapy, 2016 To explore the effectiveness of a mentalization-based therapeutic intervention specifically developed for parents in entrenched conflict over their children.
Leezah Hertzmann +5 more
semanticscholar +1 more source
Sensors, 2022 To efficiently utilize nonexclusive underwater acoustic frequencies, we propose an Underwater Cooperative Spectrum Sharing (UCSS) protocol for a centralized underwater cognitive acoustic network that mainly consists of two parts.
Changho Yun
doaj +1 more source
The Plant Genome, 2022 Genomic selection (GS) is a predictive methodology that trains statistical machine‐learning models with a reference population that is used to perform genome‐enabled predictions of new lines.
Osval Antonio Montesinos‐Lopez +5 more
doaj +1 more source