Results 111 to 120 of about 27,923 (259)

Key technologies of non-orthogonal multiple access for 5G systems

open access: yesDianxin 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
doaj   +2 more sources

Trellis-Coded Non-Orthogonal Multiple Access [PDF]

open access: yes, 2019
In this letter, we propose a trellis-coded non-orthogonal multiple access (NOMA) scheme. The signals for different users are produced by trellis coded modulation (TCM) and then superimposed on different power levels.
Ganji, M, Jafarkhani, H, Zou, X
core   +1 more source

On Downlink NOMA in Heterogeneous Networks With Non-Uniform Small Cell Deployment

open access: yesIEEE 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
doaj   +1 more source

A NOMA-Enhanced Reconfigurable Access Scheme With Device Pairing for M2M Networks

open access: yesIEEE 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
doaj   +1 more source

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