Results 61 to 70 of about 51,994 (258)
An Iterative Channel Estimation Method for Multi-Cell Massive MIMO Systems
IEEE Access, 2018 For a massive multiple-input multiple-output system in the multi-cell scenarios, it generally suffers from pilot contamination due to the fact that the adjacent cells may use the same pilot sequences.
Zhiqiang Yi, Haiquan Wang, Peng Pan
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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
IEEE Access, 2017 Pilot contamination (PC) is a major impediment of large-scale multi-cell multiple-input multiple-output systems. Hence, we propose an optimal pilot design for time-domain channel estimation, which is capable of completely eliminating PC.
Xinying Guo +4 more
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Magnetic Textiles: A Review of Materials, Fabrication, Properties, and Applications
Advanced Materials Technologies, EarlyView.Magnetic textiles (M‐textiles) are emerging as a programmable materials platform that merges magnetic matter with hierarchical textile structures. This article consolidates magnetic material classes, textile architectures, and fabrication and magnetization strategies, revealing structure–property–function relationships that govern magneto‐mechanical ...
Li Ke +3 more
wiley +1 more source
Pilot Contamination Suppression in Massive MIMO Multi-cell Multi-user TDD Systems
工程科学与技术, 2018 In order to suppress the pilot contamination in Massive MIMO system,a pilot scheduling scheme based on path loss to perform user grouping (PLUG) was proposed.The proposed PLUG scheme divided the users into the center user group and the edge user group ...
Yucheng WU +3 more
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Magnetic Droplet Manipulation on Open Surfaces
Advanced Materials Technologies, EarlyView.Recent advances in the manipulation of magnetic droplets demonstrate various manipulations on open surfaces, including transport, splitting, merging, and force‐controlled motion, enabled by magnetic particles and external fields. ABSTRACT Manipulation of liquids on a smaller scale enables applications in various fields, particularly diagnostics and ...
Robab Jahangir, Vahid Nasirimarekani
wiley +1 more source
Pilot contamination mitigation strategies in massive MIMO systems
IET Communications, 2017 Compared with the traditional multi‐user MIMO (multiple‐input and multiple‐output), massive MIMO aims to serve tens of users with hundreds of antennas on each base station. All users can use the same time–frequency resources through space division multiple access, leading to vast improvement on spectral efficiency.
Zijun Gong +2 more
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From Rigid to Soft Robotic Approaches for Neuroendoscopy
Advanced Robotics Research, EarlyView.Robotic assistance has had minimal impact on deep intraventricular surgeries, where small‐scale, precision, and reduced invasiveness can contribute to improved patient outcomes. Emerging technologies in rigid, soft, and hybrid robotics are reviewed to identify the most promising mechanisms for deep brain navigation in addition to an attempt to identify
Kieran Gilday +3 more
wiley +1 more source
Dynamic pilot allocation scheme in massive MIMO system
Dianxin kexue, 2017 In order to solve the problem of the pilot contamination in multi-cell massive multiple input multiple output (MIMO) system,a dynamic pilot allocation scheme was proposed by analyzing the error of MMSE channel estimation.Users living in the fringe ...
Xin FANG +4 more
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Analysis and Evaluation of Performance Gains and Tradeoffs for Massive MIMO Systems
Applied Sciences, 2016 Massive MIMO technique offers significant performance gains for the future of wireless communications via improving the spectral efficiency, energy efficiency and the channel quality with simple linear processing such as maximum-ratio transmission (MRT ...
Saba Qasim Jabbar, Yu Li
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