Results 21 to 30 of about 8,202,004 (293)

Queue-Sharing Multiple Access [PDF]

open access: yesProceedings of the 23rd International ACM Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems, 2020
Queue-Sharing Multiple Access (QSMA) is introduced and analyzed. The new channel-access method consists of establishing and maintaining a distributed transmission queue among nodes sharing a common channel and results in a sequence of queue cycles, with each cycle having one or multiple queue turns with collision-free transmissions from nodes that have
Garcia-Luna-Aceves, J.J.   +1 more
openaire   +2 more sources

Few-Mode Based Beam Shaping for Multi-User Indoor Optical Wireless Communications With Time-Slot Coding

open access: yesIEEE Photonics Journal, 2022
We propose a novel indoor optical wireless communications (OWC) system using few-mode based beam shaping integrating time-slot coding (TSC) scheme to serve multiple users simultaneously.
Jianghao Li   +2 more
doaj   +1 more source

Multi-Carrier Waveforms and Multiple Access Strategies in Wireless Networks: Performance, Applications, and Challenges

open access: yesIEEE Access, 2022
Current generation mobile communications require high-quality services. Adopting multiple access (MA) and multi-carrier waveforms potentially enhances the quality of services offered to end-users.
Tewelgn Kebede   +4 more
doaj   +1 more source

Cooperative Non-Orthogonal Multiple Access for Beyond 5G Networks

open access: yesIEEE Open Journal of the Communications Society, 2021
In the beyond 5G networks, extraordinary demands for data rates and capacity are to be met. A possible candidate to address these challenges is Non-Orthogonal Multiple Access (NOMA) technique, which leads to higher diversity gains and massive ...
Abbas Ahmed   +3 more
doaj   +1 more source

A Novel Downlink IM-NOMA Scheme

open access: yesIEEE Open Journal of the Communications Society, 2021
In the next generations of communication systems, resources' scarcity devolves to a more critical point as a consequence of the expected massive number of users to be served. Furthermore, the users' contradicting requirements on quality of service forces
Abdullateef Almohamad   +3 more
doaj   +1 more source

Byzantine Multiple Access

open access: yesCoRR, 2019
Part II is an extended version of the paper titled "Multiple Access Channels with Adversarial Users" to be presented at IEEE International Symposium on Information Theory ...
Neha Sangwan   +3 more
openaire   +2 more sources

Outage Performance Analysis of RSMA-Aided Semi-Grant-Free Transmission Systems

open access: yesIEEE Open Journal of the Communications Society, 2023
In this paper, we analyze the outage performance of a rate-splitting multiple access (RSMA)-aided semi-grant-free (SGF) transmission system, in which a grant-based user (GBU) and multiple grant-free users (GFUs) access the base station by sharing the ...
Fengcheng Xiao   +4 more
doaj   +1 more source

On Separation for Multiple Access Channels [PDF]

open access: yes, 2007
We examine the issue of separation for multiple access channels. We demonstrate that source-channel separation holds for noisy multiple access channels, when the channel operates over a common finite field.
Effros, Michelle   +3 more
core   +1 more source

Optimization of multiple access in the energy harvesting wireless sensor network with delivery deadline constraint

open access: yes物联网学报, 2022
With the wide application of the energy harvesting wireless sensor network (WSN) in many real-time communication scenarios, such as environmental monitoring, industrial automation and battlefield surveillance, the multiple access of such WSN needs to ...
Aoqin YANG   +5 more
doaj  

Performance Comparison of Massive MIMO System with Orthogonal and Nonorthogonal Multiple Access for Uplink in 5G Systems

open access: yesApplied Sciences, 2020
In the attempt to respond to market demands, new techniques for wireless communication systems have been proposed to ensure, to all active users that are sharing the same network cell, an increased quality of service, regardless of any environmental ...
Madalina-Georgiana Berceanu   +2 more
doaj   +1 more source

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