Results 61 to 70 of about 498,835 (335)

Three design aspects of multicarrier interleave division multiple access [PDF]

open access: yes, 2008
This paper presents a novel generalized transceiver architecture, i.e., Multicarrier Interleave-Division-Multiplexing-aided Interleave Division Multiple Access (MC-IDM-IDMA). A parallel interference cancellation (PIC)-aided iterative multiuser detection (
Zhang, Rong, Hanzo, Lajos
core   +1 more source

Non-Orthogonal Multiple Access Assisted Multi-Region Geocast

open access: yesIEEE Access, 2018
This paper proposes a novel location-based multi-group multicast framework, which is termed non-orthogonal multiple access (NOMA)-assisted multi-region geocast.
Yi Zhang   +3 more
doaj   +1 more source

Cooperative Non-Orthogonal Multiple Access with Energy Harvesting

open access: yesInformation, 2017
In this paper, we analyze the outage probability of an amplify-and-forward (AF) cooperative non-orthogonal multiple access (NOMA) model in multi-relay multiuser networks.
Weidong Guo, Yunfeng Wang
doaj   +1 more source

Cooperative Non-Orthogonal Multiple Access for Future Wireless Communications [PDF]

open access: yesEAI Endorsed Transactions on Industrial Networks and Intelligent Systems, 2018
There is a huge demand for increased connectivity and reliability of devices in the fifth generation and beyond of wireless communications so as to ensure massive connectivity and high spectral efficiency.
Sunyoung Lee
doaj   +1 more source

NON-ORTHOGONAL MULTIPLE ACCESS SCHEMES SURVEY: AN OVERVIEW OF NON-ORTHOGONAL MULTIPLE ACCESS TECHNIQUES

open access: yesJournal of Engineering and Sustainable Development, 2023
Non-Orthogonal Multiple Access (NOMA) is a promising technology that can significantly improve the performance of wireless communication systems, especially in applications with a high number of users and limited spectral resources. NOMA enables simultaneous transmission and reception of multiple signals at the same time and frequency resources.
Sarab k. mahmood   +2 more
openaire   +1 more source

A Thorough Review of Prospective Technologies for 5G/Beyond 5G Wireless Networks

open access: yesEngineered Science
Recently, wireless communication systems have relied on the orthogonal multiple access (OMA) principle to distribute radio resources to users through orthogonal access.
Kiran Kumar Godugu   +4 more
doaj   +1 more source

A Unified Framework for Non-Orthogonal Multiple Access [PDF]

open access: yesIEEE Transactions on Communications, 2018
This paper proposes a unified framework of non-orthogonal multiple access (NOMA) networks. Stochastic geometry is employed to model the locations of spatially NOMA users. The proposed unified NOMA framework is capable of being applied to both code-domain NOMA (CD-NOMA) and power-domain NOMA (PD-NOMA).
Xinwei Yue   +4 more
openaire   +2 more sources

A novel uplink multiple access scheme based on TDS-FDMA

open access: yes, 2011
This contribution proposes a novel time-domain synchronous frequency division multiple access (TDS-FDMA) scheme to support multi-user uplink application.
Dai, Linglong   +5 more
core   +1 more source

Joint Tomlinson-Harashima precoding and optimum transmit power allocation for SC-FDMA [PDF]

open access: yes, 2010
Single-Carrier Frequency Division Multiple Access (SC-FDMA) has been selected as the uplink transmission scheme in the 3GPP Long Term Evolution standard.
Nix, AR   +3 more
core   +1 more source

Optimizing sum rates in IoT networks: A novel IRS-NOMA cooperative system

open access: yesICT Express
Intelligent Reflecting Surfaces (IRS) offer a promising solution for enhancing sum rates in wireless networks by dynamically adjusting signal reflections to optimize propagation paths.
Mukkara Prasanna Kumar   +6 more
doaj   +1 more source

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