Results 71 to 80 of about 6,711 (206)

Slotted Aloha with Priorities and Random Power [PDF]

open access: yes, 2005
We study distributed choice of retransmission probabilities in slotted Aloha under power differentiation. We consider random transmission powers and further study the role of priorities (through power control) given either to new arriving packets or to backlogged ones.
Eitan Altman   +3 more
openaire   +1 more source

BeGuard: An LSTM–Fused Defense Model Against Deepfakes in Competitive Activities–Related Social Networks

open access: yesInternational Journal of Intelligent Systems, Volume 2025, Issue 1, 2025.
We propose a novel defense mechanism for protecting users from deepfakes by analyzing their behaviors in competitive activities and their social interactions. The model dynamically embeds user behaviors based on their participation in competitive activities, capturing these activities’ temporal dynamics through long short–term memory networks.
Yujie Li   +5 more
wiley   +1 more source

Internet of Things in Healthcare Research: Trends, Innovations, Security Considerations, Challenges and Future Strategy

open access: yesInternational Journal of Intelligent Systems, Volume 2025, Issue 1, 2025.
The Internet of Things (IoT) has become a transformative force across various sectors, including healthcare, offering new opportunities for automation and enhanced service delivery. The evolving architecture of the IoT presents significant challenges in establishing a comprehensive cyber‐physical framework. This paper reviews recent advancements in IoT‐
Attiq Ur Rehman   +11 more
wiley   +1 more source

Slotted ALOHA Overlay on LoRaWAN: a Distributed Synchronization Approach

open access: yes, 2018
LoRaWAN is one of the most promising standards for IoT applications. Nevertheless, the high density of end-devices expected for each gateway, the absence of an effective synchronization scheme between gateway and end-devices, challenge the scalability of
Benini, Luca   +2 more
core   +1 more source

Throughput analysis of ALOHA with cooperative diversity [PDF]

open access: yes, 2008
Cooperative transmissions emulate multi-antenna systems and can improve the quality of signal reception. In this paper, we propose and analyze a cross layer random access scheme, C-ALOHA, that enables cooperative transmissions in the context of ALOHA ...
Ercetin, Ozgur   +5 more
core   +1 more source

Advancements in Machine Learning‐Enhanced Green Wireless Sensor Networks: A Comprehensive Survey on Energy Efficiency, Network Performance, and Future Directions

open access: yesJournal of Sensors, Volume 2025, Issue 1, 2025.
Wireless sensor networks (WSNs) are a collection of sensor nodes that collect data from the environment using wireless technology. WSNs have many applications in various domains, such as public utilities, industrial monitoring and control, and defense and military activities.
Kofi Sarpong Adu-Manu   +3 more
wiley   +1 more source

Slotted ALOHA for Wireless Powered Communication Networks

open access: yesIEEE Access, 2018
Centralized controls in wireless-powered communication networks (WPCNs) induce considerable overhead for channel estimation and high complexity for optimization, as the number of wireless devices (WDs) increases.
Hyun-Ho Choi, Wonjae Shin
doaj   +1 more source

Outage and Local Throughput and Capacity of Random Wireless Networks

open access: yes, 2008
Outage probabilities and single-hop throughput are two important performance metrics that have been evaluated for certain specific types of wireless networks.
Haenggi, Martin
core   +1 more source

Energy efficiency considerations in software‐defined wireless body area networks

open access: yesEngineering Reports, Volume 6, Issue 3, March 2024.
Integrating software‐defined networking into wireless body area network presents several challenges in terms of safe data exchange, architectural framework, and resource efficiency. Because energy expenses account for a considerable portion of network expenditures, energy efficiency has to turn out to be a crucial design criterion for modern networking
Fahad Masood   +4 more
wiley   +1 more source

Coded Slotted ALOHA: A Graph-Based Method for Uncoordinated Multiple Access [PDF]

open access: yes, 2015
In this paper, a random access scheme is introduced which relies on the combination of packet erasure correcting codes and successive interference cancellation (SIC). The scheme is named coded slotted ALOHA.
Chiani, Marco   +2 more
core   +1 more source

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