Results 321 to 330 of about 1,293,379 (340)

Exploring Implicit Pilots for Precise Estimation of LEO Satellite Downlink Doppler Frequency

IEEE Communications Letters, 2020
The performance of low earth orbit (LEO) satellite Doppler positioning is fundamentally dominated by the precision with which the Doppler frequency is estimated, generally using an explicit pilot from the received signal.
Qihui Wei, Xi Chen, Y. Zhan
semanticscholar   +1 more source

Climate experimentation and the limits of top-down control: local variation of climate pilots in China

Journal of Environmental Planning and Management, 2020
The Low-Carbon Pilot (LCP) program in China is an important national initiative aiming to facilitate climate experimentation. Thus far, 87 local governments have become climate pilots and are tasked with developing innovative climate solutions with the ...
K. Lo, He Li, Kang Chen
semanticscholar   +1 more source

Development of the NOTECHS (non-technical skills) system for assessing pilots’ CRM skills

Human Factors and Aerospace Safety, 2018
Crew Resource Management (CRM) courses are designed to teach pilots about non-technical (cognitive and social) skills that are essential for effective and safe flight operations.
R. Flin, Lynne Martin, K.-M. Goeters, H. Hörmann, R. Amalberti, C. Valot, H. Nijhuis   +6 more
semanticscholar   +1 more source

Pilot Decontamination Based on Superimposed Pilots Assisted by Time-Multiplexed Pilots in Massive MIMO Networks

IEEE Transactions on Vehicular Technology, 2020
Pilot contamination has been recognized as one of the main limiting factors in massive multiple-input multiple-output (MIMO) since it damages the acquisition of accurate channel state information (CSI) at base stations.
L. A. Lago, Yan Zhang, Noman Akbar, Zesong Fei, Nan Yang, Zunwen He   +5 more
semanticscholar   +1 more source