Results 61 to 70 of about 2,499,076 (175)

Reconfigurable Intelligent Surface-Aided Cooperative NOMA with p-CSI Fading Channel toward 6G-Based IoT System

Sensors, 2022
Addressing the challenges of internet-based 5G technology, namely increasing density through micro-cell systems, frequency spectrum, and reducing resource costs, is needed to meet the use of IoT-based 6G technology with the goal of high-speed, high ...
Hsing-Chung Chen, Agung Mulyo Widodo, Jerry Chun-Wei Lin, Chien-Erh Weng   +3 more
doaj   +1 more source

Multipacket Hybrid ARQ: Closing Gap to the Ergodic Capacity [PDF]

IEEE Transactions on Communications, 2015
In this work, we consider incremental redundancy (IR) hybrid automatic repeat request (HARQ), where the transmission rounds are carried over independent block-fading channels. We analyze the multipacket HARQ, where the transmitter allows two different packets to share the same channel block; this stands in contrast with the conventional HARQ, where ...
Mohammed Jabi, Aata El Hamss, Leszek Szczecinski, Pablo Piantanida   +3 more
openaire   +2 more sources

Scaling turbulence drives the general circulation

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The NOAA Gulfstream SP4, which deployed the GPS dropsondes over the NE Pacific Ocean as part of the Winter Storms Project during the January–March periods of 2004, 2005 and 2006. Abstract Statistical multifractal analysis of airborne and dropsonde observations is used to show that persistence of velocity after molecular collisions breaks the continuous
Adrian F. Tuck
wiley   +1 more source

Space-Time Water-Filling for Composite MIMO Fading Channels

EURASIP Journal on Wireless Communications and Networking, 2006
We analyze the ergodic capacity and channel outage probability for a composite MIMO channel model, which includes both fast fading and shadowing effects.
Shen Zukang, Heath Jr Robert W, Andrews Jeffrey G, Evans Brian L   +3 more
doaj   +2 more sources

Evaluation and assimilation of Arctic Weather Satellite data in the AROME‐Arctic forecast system

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The Arctic Weather Satellite (AWS), launched in August 2024, is a prototype for the future EPS–Sterna constellation of small satellites carrying an innovative microwave sounder. We present the first assessment of AWS in the regional AROME‐Arctic numerical weather prediction system, covering post‐launch calibration results and the impact of AWS ...
Stéphanie Guedj, Per Dahlgren, Máté Mile   +2 more
wiley   +1 more source

Environment-Aware Coverage Optimization for Space-Ground Integrated Maritime Communications

IEEE Access, 2020
To satisfy the growing demand for broadband maritime communications, space-ground integrated maritime communication networks (MCNs) arise, which are envisioned to take full advantage of both satellites and terrestrial shore-based networks.
Te Wei, Wei Feng, Ning Ge, Jianhua Lu
doaj   +1 more source

Exploring the Landscape of MgO Polymorphs: Stability and the Electronic Band Gap of Promising Candidates

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
In this study, we have investigated possible predicted polymorphs of magnesium oxide (MgO) with respect to their thermodynamic and kinetic stability, as well as their electronic properties, focusing on the possibility of tuning the band gap of the material.
D. Zagorac, J. Zagorac, D. Fischer, T. Škundrić, J. C. Schön   +4 more
wiley   +1 more source

An integrative numerical method for evaluating Ergodic capacity of multi-user NOMA over faded channels with imperfect-CSI and SIC

e-Prime: Advances in Electrical Engineering, Electronics and Energy
With increased demand for the internet and the Internet of Things (IoT), future wireless communication networks are draw more attention to afford the massive connectivity, capacity, and extensive coverage requirements.
Thaherbasha Shaik, Nageena parveen SD, Hareesh Ayanampudi, Ravindra Dhuli   +3 more
doaj   +1 more source

Enhancing generalizability theory with mixed‐effects models for heteroscedasticity in psychological measurement: A theoretical introduction with an application from EEG data

British Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Generalizability theory (G‐theory) defines a statistical framework for assessing measurement reliability by decomposing observed variance into meaningful components attributable to persons, facets, and error. Classic G‐theory assumes homoscedastic residual variances across measurement conditions, an assumption that is often violated in ...
Philippe Rast, Peter E. Clayson
wiley   +1 more source

Ergodic capacity analysis for MIMO two－hop relay system based on decode－and－forward

上海师范大学学报. 自然科学版, 2012
This paper presents an ergodic capacity analysis of MIMO two－hop relaying systems based on the relay protocol of decode－and－forward.Firstly the expression for the probability density function of an unordered eigenvalue of the system is derived.Then a ...
CHEN Birong, ZHANG Jing, DONG Jianping
doaj