Results 111 to 120 of about 26,640 (235)
Key technologies of non-orthogonal multiple access for 5G systems
Dianxin kexue, 2019 With the unprecedented increase of mobile data traffic brought by the wide proliferation of smart phones and tablet computers, the non-orthogonal multiple access (NOMA) has attained great attention due to its overloading capability in the case of limited
Yuanyuan DONG +5 more
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On Downlink NOMA in Heterogeneous Networks With Non-Uniform Small Cell Deployment
IEEE Access, 2018 Compared to orthogonal multiple access (OMA), non-orthogonal multiple access (NOMA) can achieve higher spectral efficiency by exploiting the power domain multiplexing.
Tao Han +6 more
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A NOMA-Enhanced Reconfigurable Access Scheme With Device Pairing for M2M Networks
IEEE Access, 2019 This paper aims to address the distinct requirements of machine-to-machine networks, particularly heterogeneity and massive transmissions. To this end, a reconfigurable medium access control with the ability to choose a proper access scheme with the ...
Atoosa Dalili Shoaei +2 more
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Non-orthogonal multiple access (NOMA) for cellular wireless communications
, 2017 This thesis begins with an overview of the basic concept of NOMA by identifying the key working principle of NOMA systems and their respective power allocation requirements in both of downlink and uplink transmissions. Then, for cell-throughput maximization in both of downlink and uplink NOMA transmissions, the joint problem of user clustering and ...
openaire +2 more sources
Comprehensive Study and Comparison on 5G NOMA Schemes
IEEE Access, 2018 Compared to the traditional orthogonal multiple access, non-orthogonal multiple access (NOMA) technology can achieve higher spectrum efficiency and support more massive connectivity. In this paper, we conduct comprehensive study and comparison on current
Zhanji Wu +3 more
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Low Complexity WMMSE Power Allocation In NOMA-FD Systems
, 2019 In this paper we study the problem of power and channel allocation with the objective of maximizing the system sum-rate for multicarrier non-orthogonal multiple access (NOMA) full duplex (FD) systems.
Abrardo, Andrea +3 more
core
Relay-Aided Uplink NOMA Under Non-Orthogonal CCI and Imperfect SIC in 6G Networks
IEEE Open Journal of Vehicular TechnologySixth generation (6G) networks must guarantee radio-resource availability for coexisting users and machines. Here, non-orthogonal multiple access (NOMA) can address resource limitations by serving multiple devices on the same spectral and temporal ...
Volkan Ozduran +4 more
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Performance analysis of partial NOMA-based layered D2D communications
EURASIP Journal on Wireless Communications and NetworkingConventionally, non-orthogonal multiple access (NOMA) has traditionally been implemented separately from orthogonal multiple access (OMA), aiming to improve the capacity of multi-user systems. However, a recent study has ventured beyond this conventional
Jinjuan Ju, Qiang Sun
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MathematicsNowadays, efficient spectrum usage is one of the most important design principles to take into account in wireless communications due to the exponential growth of mobile devices.
Luis Alberto Vásquez-Toledo +8 more
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