Results 21 to 30 of about 5,636,137 (307)
Adaptive Estimation of Hazard Rate with Censored Data [PDF]
Communications in Statistics - Theory and Methods, 2008 In this article, we study hazard projection estimators under right-censoring of the observations. We consider projection spaces generated by trigonometric or piecewise polynomials. First, we derive bounds on the MISE of the estimators. These bounds imply that the estimator reaches the standard optimal rate associated with the regularity of the hazard ...
Comte, Fabienne, Brunel, Elodie
openaire +1 more source
Adaptive MIMO-VLC System for High Data Rate Communications [PDF]
2020 IEEE Globecom Workshops (GC Wkshps, 2020 In this paper, we describe a high-speed indoor MIMO-VLC system that adapts the number of MIMO channels and data rate according to channel conditions at user locations. A transmitter coordination algorithm and a data rate adaptive modulation technique have been investigated. At each user location across the room, the number of MIMO transmission channels
Dong, F, Singh, R, O'Brien, D
openaire +1 more source
Observer‐based controllers with data dropout rate adaptation [PDF]
International Journal of Robust and Nonlinear Control, 2017 SummaryIn this work, we address the observer‐based control problem for networked control systems with an unknown time‐varying packet arrival rate (PAR) and under root mean square‐norm bounded disturbances. We assume packetized transmissions of both measurement and control input through a communication network with successful delivery acknowledgement ...
Daniel Dolz +2 more
openaire +2 more sources
A Novel Approach to Improve the Adaptive-Data-Rate Scheme for IoT LoRaWAN
Electronics, 2022 The long-range wide-area network (LoRaWAN) uses the adaptive-data-rate (ADR) algorithm to control the data rate and transmission power. The LoRaWAN ADR algorithm adjusts the spreading factor (SF) to allocate the appropriate transmission rate and ...
Y. Al-Gumaei +5 more
semanticscholar +1 more source
A Spreading Factor Congestion Status-Aware Adaptive Data Rate Algorithm
Journal of Sensor and Actuator Networks, 2021 LoRaWAN has established itself as one of the leading MAC layer protocols in the field of LPWAN. Although the technology itself is quite mature, its resource allocation mechanism, the Adaptive Data Rate (ADR) algorithm is still quite new, unspecified and ...
Charles Lehong +3 more
doaj +1 more source
Adaptive forecasting of exchange rates with panel data [PDF]
International Journal of Forecasting, 2010 This article investigates the statistical and economic implications of adaptive forecasting of exchange rates with panel data and alternative predictors. The candidate exchange rate predictors are drawn from (i) macroeconomic 'fundamentals', (ii) return/volatility of asset markets and (iii) cyclical and confidence indices.
Leonardo Morales-Arias, Alexander Dross
openaire +4 more sources
Analysis of Bidirectional ADR-Enabled Class B LoRaWAN Networks in Industrial Scenarios
Applied Sciences, 2020 Low-power wide-area network (LPWAN) technologies are becoming a widespread solution for wireless deployments in many applications, such as smart cities or Industry 4.0.
David Todoli-Ferrandis +3 more
doaj +1 more source
Mobility-Aware Resource Assignment to IoT Applications in Long-Range Wide Area Networks
IEEE Access, 2020 The long-range wide area network (LoRaWAN) has recently emerged as one of the most potential technologies for the mobile Internet of Things (IoT) applications.
Arshad Farhad +4 more
doaj +1 more source
Design of Software-Defined Radio-Based Adaptable Packet Communication System for Small Satellites
Aerospace, 2021 Software-defined radio (SDR) devices have made a massive contribution to communication systems by reducing the cost and development time for radio frequency (RF) designs.
Yasir M. O. ABBAS, Kenichi Asami
doaj +1 more source
Adaptive evolution is substantially impeded by Hill–Robertson interference in Drosophila [PDF]
, 2015 Hill–Robertson interference (HRi) is expected to reduce the efficiency of natural selection when two or more linked selected sites do not segregate freely, but no attempt has been done so far to quantify the overall impact of HRi on the rate of adaptive ...
Adam Eyre-Walker +18 more
core +2 more sources