Results 71 to 80 of about 2,448 (179)
Channel estimation for massive MIMO TDD systems assuming pilot contamination and flat fading
EURASIP Journal on Wireless Communications and Networking, 2018 Channel estimation is crucial for massive massive multiple-input multiple-output (MIMO) systems to scale up multi-user (MU) MIMO, providing great improvement in spectral and energy efficiency.
Felipe A. P. de Figueiredo +3 more
doaj +1 more source
Key Technical Fields and Future Outlooks of Space Manipulators: A Survey
SmartBot, EarlyView.This paper systematically reviews the technological development of space manipulators, emphasizing the unique challenges posed by space environments. It examines four areas: structural design, modeling, planning, and control, while introducing typical ground test platforms.
Gang Chen +12 more
wiley +1 more source
CAAI Transactions on Intelligence Technology, EarlyView.Abstract Internet of Medical Things (IoMT) has typical advancements in the healthcare sector with rapid potential proof for decentralised communication systems that have been applied for collecting and monitoring COVID‐19 patient data. Machine Learning algorithms typically use the risk score of each patient based on risk factors, which could help ...
Chandramohan Dhasaratha +9 more
wiley +1 more source
Channel Tracking and Transmission Design in 5G Large-Scale MIMO System
IEEE Access, 2019 The 5G wireless channel in the high-speed rail scene has the characteristics of fast time-varying and double selection, that is, frequency selectivity and time selectivity.
Yang Wang +3 more
doaj +1 more source
International Journal of Antennas and Propagation, 2016 The emerging large-scale/massive multi-input multioutput (MIMO) system combined with orthogonal frequency division multiplexing (OFDM) is considered a key technology for its advantage of improving the spectral efficiency.
Qifeng Zou, Xuezhi Tan, Mei Liu, Lin Ma
doaj +1 more source
Hematological Oncology, Volume 44, Issue 5, September 2026.ABSTRACT Diffuse large B‐cell lymphoma (DLBCL) is the most prevalent form of non‐Hodgkin lymphoma, exhibiting significant molecular and clinical heterogeneity. Advances in classification integrating phenotypic, genetic, and transcriptomic features have improved diagnosis and prognosis.
Marina Pérez‐Aguilera +14 more
wiley +1 more source
Reduced-Rank Channel Estimation for Large-Scale MIMO Systems
CoRR, 2016 12 pages, 10 figures, submitted to IEEE Trans.
Ko-Feng Chen, Yen-Cheng Liu, Yu T. Su
openaire +2 more sources
Pilot Design for Sparse Channel Estimation in Large-Scale MIMO-OFDM System
International Journal of Antennas and Propagation, 2016 The pilot design problem in large-scale multi-input-multioutput orthogonal frequency division multiplexing (MIMO-OFDM) system is investigated from the perspective of compressed sensing (CS).
Chao Xu +3 more
doaj +1 more source
International Journal of Satellite Communications and Networking, Volume 44, Issue 5, Page 594-606, September/October 2026.ABSTRACT The integration of low Earth orbit (LEO) satellite constellations with commercial aircraft communication systems presents critical challenges in maintaining continuous connectivity during dynamic flight conditions. Current geostationary satellite systems suffer from high round‐trip latency ( > 500 ms) and inadequate coverage at high latitudes,
Raúl Parada +4 more
wiley +1 more source
Portable Radar for Noncontact Heart Rate Monitoring and Estrus Detection in Dairy Cows
IEEJ Transactions on Electrical and Electronic Engineering, Volume 21, Issue 9, Page 1390-1403, September 2026.This study introduces a portable radar system for real‐time monitoring of respiratory and heart rates in dairy cows. It uses millimeter‐wave Frequency Modulated Continuous Wave (FMCW) radar to perform noncontact physiological sensing, reducing behavioral disturbance. The radar system's design prioritizes portability, cost‐effectiveness, and robustness,
Yingxiu Li +7 more
wiley +1 more source