Results 31 to 40 of about 24,512,875 (151)
Joint optimization for secure ambient backscatter communication in NOMA-enabled IoT networks
Digital Communications and Networks, 2023 Non-Orthogonal Multiple Access (NOMA) has emerged as a novel air interface technology for massive connectivity in Sixth-Generation (6G) era. The recent integration of NOMA in Backscatter Communication (BC) has triggered significant research interest due ...
Wali Ullah Khan +4 more
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Journal of Telecommunications and Information Technology, 2023 This paper presents a comprehensive study that examines the fundamental concept of the non-orthogonal multiple access (NOMA) scheme and provides its detailed comparison with the orthogonal multiple access (OMA) technique. Furthermore, the paper explores
Yunus Dursun
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Massively Concurrent Non-Orthogonal Multiple Access for 5G Networks and Beyond
IEEE Access, 2019 We propose a new signal spreading-based non-orthogonal multiple access (NOMA) schemes that exploits the frame-theoretic design principles to enable the efficient concurrence of multiple users in both downlink (DL) and uplink (UL).
Razvan-Andrei Stoica +3 more
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Sensors, 2019 In this paper, an Internet-of-Things (IoT) system containing a relay selection is studied as employing an emerging multiple access scheme, namely non-orthogonal multiple access (NOMA).
Dinh-Thuan Do +3 more
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IEEE Access, 2023 The integration of cognitive radio (CR) technology and non-orthogonal multiple access (NOMA) techniques, referred to as CR-based NOMA systems, has been recently configured as a promising solution to meet the requirements of beyond fifth-generation (B5G ...
Haythem Bany Salameh +2 more
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IEEE Access, 2021 Mobile communication systems are always in continuous evolution due to the demands of the end-users using this technology. Therefore, before the possible launch of 5G, some technologies have opened the way to the new mobile communication system. The need
A. F. M. Shahen Shah +4 more
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On Clustering and Channel Disparity in Non-Orthogonal Multiple Access (NOMA)
CoRR, 2019 Non-orthogonal multiple access (NOMA) allows multiple users to share a time-frequency resource block by using different power levels. An important challenge associated with NOMA is the selection of users that share a resource block. This is referred to as clustering, which generally exploits the channel disparity (i.e. distinctness) among the users. We
Konpal Shaukat Ali +3 more
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Dynamic User Grouping-Based NOMA Over Rayleigh Fading Channels
IEEE Access, 2019 With the development of wireless communications and internet of things (IoT), non-orthogonal multiple access (NOMA) has been considered as one of effective schemes to meet the rapidly growing user access requirements.
Yue Yin +4 more
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Impact of Mutual Coupling on Power-Domain Non-Orthogonal Multiple Access (NOMA) [PDF]
IEEE Access, 2020 This paper investigates the impact of mutual coupling (MC) on the achievable sum-rate of power-domain non-orthogonal multiple access (NOMA) system in both uplink (UL) and downlink (DL) transmissions. We assume a single-antenna user NOMA system with directional beamforming in the millimeter wave (mmW) channel.
Nann Win Moe Thet +3 more
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Coordinated Beamforming for Multi-Cell Non-Orthogonal Multiple Access-Based Spatial Modulation
IEEE Access, 2020 This paper proposes coordinated beamforming (CB) that works over non-orthogonal multiple access (NOMA) scheme integrated with spatial modulation (SM), termed as CB NOMA-SM, to improve capacity and user fairness. User capacity, ergodic sum capacity (ESC),
Denny Kusuma Hendraningrat +2 more
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