Non-orthogonal multiple access (NOMA) is widely recognized for its spectral and energy
efficiency, which allows more users to share the network resources more effectively. This …

Non-orthogonal multiple access (NOMA) is a promising technology in future mobile
communications. In this letter, we study the channel estimation and power allocation …

This letter focuses on joint user activity and data detection in the uplink grant-free non-
orthogonal multiple access systems based on approximate message passing (AMP) and …

In this paper, we study an uplink non-orthogonal multiple access (NOMA) wireless system
with short-packet communications (SPC) in the presence of channel estimation errors and …

In physical layer for non-orthogonal multiple access (NOMA), most existing studies focus on
the non-delay-sensitive metrics such as the spectral efficiency. In order to improve user's …

Non-orthogonal multiple access (NOMA) scheme is an emerging 5G technology to improve
upon the spectral efficiency. It can support more users than the number of available …

Nonorthogonal multiple access (NOMA) is one of the key techniques to improve the spectral
efficiency required for fifth‐generation (5G) mobile networks. A severe interuser interference …

Spectrally efficient multiple access technologies, such as Multi-User Multiple-Input-Multiple-
Output (MU-MIMO) system and Non-Orthogonal Multiple Access (NOMA), are the key …

By exploiting the power domain, non-orthogonal multiple access (NOMA) is capable of
improving system spectrum efficiency and supporting massive concurrent connections …

Non-orthogonal multiple access (NOMA) is regarded as one of the most important
techniques for future 5G systems. In the downlink general NOMA schemes, the received …