Results 71 to 80 of about 2,052 (205)

Hybrid ARQ Scheme with Autonomous Retransmission for Multicasting in Wireless Sensor Networks

open access: yesSensors, 2017
A new hybrid automatic repeat request (HARQ) scheme for multicast service for wireless sensor networks is proposed in this study. In the proposed algorithm, the HARQ operation is combined with an autonomous retransmission method that ensure a data packet
Young-Ho Jung, Jihoon Choi
doaj   +1 more source

Decoupling Interday and Intraday Volatility Dynamics With Price Durations

open access: yesJournal of Time Series Analysis, Volume 46, Issue 6, Page 1224-1250, November 2025.
ABSTRACT This article introduces a novel framework for volatility estimation based on price durations with an adaptive price change threshold. This innovation allows us to disentangle daily and intraday volatility dynamics from price durations, which greatly simplifies the parametric modelling of price durations and hence leads to more accurate ...
Yifan Li   +3 more
wiley   +1 more source

Backlog and Delay Reasoning in HARQ Systems [PDF]

open access: yes, 2016
systems have been favored in particular state-of-the-art commu-nications systems since they provide the practicality of error detections and corrections aligned with repeat-requests when needed at receivers.
Markus Fidler, Sami Akin
core  

Throughput and Energy Efficiency of a Cooperative Hybrid ARQ Protocol for Underwater Acoustic Sensor Networks

open access: yesSensors, 2013
Due to its efficiency, reliability and better channel and resource utilization, cooperative transmission technologies have been attractive options in underwater as well as terrestrial sensor networks.
Arindam Ghosh, Ho-Shin Cho, Jae-Won Lee
doaj   +1 more source

Temperature Monitoring of Mass Concrete Structure Using Wireless Sensing System

open access: yesStructural Control and Health Monitoring, Volume 2025, Issue 1, 2025.
Rapid temperature changes during the early stages of mass concrete construction can cause thermal cracking, which negatively impacts structural integrity and longevity. Reliable temperature monitoring is essential for effective crack control. Traditional methods, such as manual inspections and wired structural health monitoring systems, are often ...
Tengyi Wang   +4 more
wiley   +1 more source

Dynamic and efficient device collaborations in 5G‐advanced and 6G networks

open access: yesIET Communications, Volume 18, Issue 19, Page 1437-1450, December 2024.
Collaborative transmission, comprising multiple devices owned by a single user, is progressively evolving into an essential strategy to meet the stringent demands of burgeoning collaborative scenarios in 5G‐advanced and 6G networks. This paper proposes three novel use cases for device collaboration, namely data duplication, data splitting and wireless ...
Xianghui Han   +5 more
wiley   +1 more source

Performance of Cognitive Stop-and-Wait Hybrid Automatic Repeat Request in the Face of Imperfect Sensing

open access: yesIEEE Access, 2016
The cognitive radio (CR) paradigm has the potential of improving the exploitation of the electromagnetic spectrum by detecting instantaneously unoccupied spectrum slots allocated to primary users (PUs).
Ateeq Ur Rehman   +3 more
doaj   +1 more source

Dual‐mode codeword position index based SCMA with transmit diversity

open access: yesIET Communications, Volume 18, Issue 17, Page 1002-1017, October 2024.
This article provides a dual‐mode codeword position index based sparse code multiple access with transmit diversity scheme in which index bits are repeatedly transmitted to obtain a transmit diversity gain. According to simulation results and system analysis, the proposed scheme achieves a higher reliability with a slight loss of spectral efficiency ...
Yanbing Yang, Jing Lei, Ke Lai
wiley   +1 more source

Throughput and Delay Analysis of HARQ with Code Combining over Double Rayleigh Fading Channels [PDF]

open access: yes, 2018
This paper proposes the use of hybrid automatic repeat request (HARQ) with code combining (HARQ-CC) to offer reliable communications over double Rayleigh channels.
Balasingham, Ilangko   +4 more
core   +4 more sources

Vascular access-specific health-related quality of life impacts among hemodialysis patients: qualitative development of the hemodialysis access-related quality of life (HARQ) instrument

open access: yesBMC Nephrology, 2020
Background End stage kidney disease and hemodialysis dependence are associated with impairments in health-related quality of life (HRQOL), which may be related to vascular access (VA).
Robert J. Nordyke   +8 more
doaj   +1 more source

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