Results 21 to 30 of about 2,630 (183)

Application of ZigZag Decoding in Frameless ALOHA

IEEE Access, 2019
As ZigZag decoding (ZD) can resolve a collision between two packets, the combination of ZD and successive interference cancellation (SIC) is expected to provide a lower packet loss rate (PLR) and higher average throughput than the conventional frameless ...
Shun Ogata, Koji Ishibashi
doaj   +1 more source

Analytical Model of ALOHA and Time- and Frequency-Asynchronous ALOHA with Forward Error Correction for IoT Systems

Sensors, 2022
The blooming of internet of things (IoT) services calls for a paradigm shift in the design of communications systems. Short data packets sporadically transmitted by a multitude of low-cost low-power terminals require a radical change in relevant aspects ...
Federico Clazzer, Marcel Grec
doaj   +1 more source

An Uplink Random Access Scheme Based on ALOHA System Assisted by Gain Division Multiple Access

IEEE Access, 2023
Gain division multiple access (GDMA) is a non-orthogonal multiple access (NOMA) technique for uplink communications. In GDMA, the receiver employs both the magnitudes and phases of channel gains associated to the users to separate users.
Mao-Chao Lin, Yu-Qin Yang, Cheng-Yen Chang, Shih-Kai Lee   +3 more
doaj   +1 more source

The throughput of slotted aloha with diversity [PDF]

2013 51st Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2013
Accepted for publications at 51st Annual Allerton Conference on Communication, Control, and ...
Munari, Andrea, Heindlmaier, Michael, Liva, Gianluigi, Berioli, Matteo   +3 more
openaire   +3 more sources

Secured operating regions of Slotted ALOHA in the presence of interfering signals from other networks and DoS attacking signals

Journal of Advanced Research, 2011
It is expected that many networks will be providing services at a time in near future and those will also produce different interfering signals for the current Slotted ALOHA based systems.
Jahangir H. Sarker, Hussein T. Mouftah
doaj   +1 more source

Packet Flow Based Reinforcement Learning MAC Protocol for Underwater Acoustic Sensor Networks

Sensors, 2021
Medium access control (MAC) is one of the key requirements in underwater acoustic sensor networks (UASNs). For a MAC protocol to provide its basic function of efficient sharing of channel access, the highly dynamic underwater environment demands MAC ...
Ibrahim B. Alhassan, Paul D. Mitchell
doaj   +1 more source

Occupational exposures to solvents and metals are associated with fixed airflow obstruction

Scandinavian Journal of Work, Environment & Health, 2017
OBJECTIVES: This study investigated the associations between occupational exposures to solvents and metals and fixed airflow obstruction (AO) using post-bronchodilator spirometry. METHODS: We included 1335 participants from the 2002–2008 follow-up of the
Sheikh M Alif, Shyamali C Dharmage, Geza Benke, Martine Dennekamp, John A Burgess, Jennifer L Perret, Caroline J Lodge, Stephen Morrison, David P Johns, Graham G Giles, Lyle C Gurrin, Paul S Thomas, John L Hopper, Richard Wood-Baker, Bruce R Thompson, Iain H Feather, Roel Vermeulen, Hans Kromhout, E Haydn Walters, Michael J Abramson, Melanie C Matheson   +20 more
doaj   +1 more source

Analysis of guest satisfaction through the service quality of the Aloha department at Aloft Bali Seminyak

Journal of Applied Sciences in Travel and Hospitality, 2022
This research discusses the assessment of guest satisfaction through the service quality that is provided by the Aloha department at Aloft Bali Seminyak.
Gede Aditya Gunawan, Budi Susanto, I Nyoman Meirejeki, Ida Ayu Ketut Sumawidari   +3 more
doaj   +1 more source

Guided-Aloha for Secondary Access With Spectrum Prediction

IEEE Access
The demand for spectrum access continues to grow exponentially and dynamic spectrum access (DSA) is a candidate to alleviate issues with spectrum scarcity by adapting spectrum resources in real-time.
Sithamparanathan Kandeepan, Madhulika Tripathi, Ke Wang, Don Gossink, Tharaka Samarasinghe, Chamath Divarathne   +5 more
doaj   +1 more source

Performance Evaluation of LoRaWAN for Green Internet of Things

IEEE Access, 2019
LoRa is a long-range, low power and single-hop wireless technology that has been envisioned for Internet of Things (IoT) applications having battery driven nodes.
Zulfiqar Ali, Shagufta Henna, Adnan Akhunzada, Mohsin Raza, Sung Won Kim   +4 more
doaj   +1 more source