Results 1 to 10 of about 326,204 (277)

Joint user grouping and power control using whale optimization algorithm for NOMA uplink systems [PDF]

open access: yesPeerJ Computer Science, 2022
The non-orthogonal multiple access (NOMA) scheme has proven to be a potential candidate to enhance spectral potency and massive connectivity for 5G wireless networks.
Bilal ur Rehman   +7 more
doaj   +2 more sources

Uplink power control scheme for spectral efficiency maximization in NOMA systems

open access: yesAlexandria Engineering Journal, 2023
Non-orthogonal multiple access (NOMA) has recently gained much research attention as a possible multiple access solution for fifth-generation (5G) wireless communication. The NOMA can further enhance spectral performance compared with orthogonal multiple
Bilal Ur Rehman   +7 more
doaj   +1 more source

Power Allocation and User Grouping for NOMA Downlink Systems

open access: yesApplied Sciences, 2023
Non-orthogonal multiple access (NOMA) technology allows multiple users to use the same time-frequency resource to send signals, which can improve spectral efficiency and throughput.
Jun Li   +4 more
doaj   +1 more source

Distributed debugging and tumult [PDF]

open access: yes, 1990
A description is given of Tumult (Twente university multicomputer) and its operating system, along with considerations about parallel debugging, examples of parallel debuggers, and the proposed debugger for Tumult.
Jansen, P.G., Scholten, J.
core   +11 more sources

Resource Allocation for Joint Communication and Localization Systems With MU-MIMO

open access: yesIEEE Access, 2022
Joint communication and localization is an attractive technique to simultaneously provide data transmission and localization services, and efficient resource allocation could bring a high data rate and high localization accuracy in limited resources ...
Yachuan Bao   +4 more
doaj   +1 more source

Group Hug: Platform Competition With User-Groups [PDF]

open access: yesSSRN Electronic Journal, 2018
We consider platform competition for small users and a user group. One platform enjoys a quality advantage and the other benefits from favorable beliefs. We study whether the group mitigates the users’ coordination problem—i.e., joining a low-quality platform because they believe that other users would do the same.
Sarit Markovich, Yaron Yehezkel
openaire   +1 more source

Time-shifted Pilot-based Scheduling with Adaptive Optimization for Pilot Contamination Reduction in Massive MIMO

open access: yesJournal of Telecommunications and Information Technology, 2020
Massive multiple-input multiple-output (MIMO) is considered to be an emerging technique in wireless communication systems, as it offers the ability to boost channel capacity and spectral efficiency.
Ambala Pradeep Kumar   +1 more
doaj   +1 more source

Overlapping User Grouping in IoT Oriented Massive MIMO Systems

open access: yesIEEE Access, 2017
This paper considers network capacity and user coverage improvement in Internet of Things (IoT)-oriented massive MIMO systems. In the literature, user grouping approaches have been used in massive MIMO to improve the network capacity, where users are ...
Run Tian   +3 more
doaj   +1 more source

Context-based user grouping for multi-casting in heterogeneous radio networks [PDF]

open access: yesAdvances in Radio Science, 2011
Along with the rise of sophisticated smartphones and smart spaces, the availability of both static and dynamic context information has steadily been increasing in recent years.
C. Mannweiler   +3 more
doaj   +1 more source

Beam interference suppression in multi-cell millimeter wave communications

open access: yesDigital Communications and Networks, 2019
Due to the increase in the number of users, beam switching is used for suppressing interference, which leads to higher computational complexity in multi-cell millimeter wave communications.
Zufan Zhang, Honghui Yu
doaj   +1 more source

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