Results 11 to 20 of about 3,939,294 (316)

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

Turbo receivers for interleave-division multiple-access systems [PDF]

open access: yes, 2009
In this paper several turbo receivers for Interleave-Division Multiple-Access (IDMA) systems will be discussed. The multiple access system model is presented first. The optimal, Maximum A Posteriori (MAP) algorithm, is then presented.
Cristea, Bogdan Eugen   +3 more
core   +1 more source

On multiple access random medium access control [PDF]

open access: yes2009 IEEE International Symposium on Information Theory, 2009
In this paper, we develop a new class of medium access control protocol, which allows each user to transmit at different data rates chosen randomly from an appropriately determined set of rates. By using successive interference cancellation, multiple packets can be received simultaneously.
Cui, Tao, Ho, Tracey
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

Spatially Modulated Code-Division Multiple-Access for High-Connectivity Multiple Access [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2019
In order to take the advantages of spatial modulation (SM) and support the multiple-access (MA) communications requiring high connectivity, we integrate the SM with DS-CDMA to propose a SM/DS-CDMA scheme, which is in favor of attaining both antenna diversity and frequency diversity. Associated with the SM/DS-CDMA scheme, a range of linear and nonlinear
Peng Pan 0003, Lie-Liang Yang
openaire   +2 more sources

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

Semi-Grant-Free Orthogonal Multiple Access With Partial-Information for Short Packet Transmissions

open access: yesIEEE Open Journal of the Communications Society, 2023
Traditional multiple access schemes, as well as more recent preamble-based schemes, cannot achieve the extremely low latency, complexity, and collision probability required by the next-generation Internet-of-Things (IoT) networks to operate.
Alberto Rech   +3 more
doaj   +1 more source

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