Nonorthogonal multiple access (NOMA) is classified into grant-based (GB) random access
(RA) and grant-free (GF) RA in 5G systems. GF NOMA RA allows user equipments (UE) to …

Recently, Reduced Capability (RedCap) New Radio (NR) User Equipment (UE), which has
smaller cost, lower complexity, and longer battery life than normal NR UE, was introduced by …

Narrowband Internet of Things (NB-IoT) is one of the most promising technologies for
enabling reliable communication among low-power, and low cost devices present in …

Efficient uplink access is a keystone for the successful deployment of machine-type
communication (MTC) that enables the promising Internet of Things (IoT). In this article, we …

Being able to accommodate multiple simultaneous transmissions on a single channel, non-
orthogonal multiple access (NOMA) appears as an attractive solution to support massive …

Non-orthogonal multiple-access (NOMA) has recently been proposed to improve throughput
and spectrum-efficiency of 5G cellular networks and beyond. It is also a key enabler for ultra …

To fulfill the stringent requirements brought by human-type communication (HTC) along with
massive machine-type communication (MTC), device-to-device (D2D) and non-orthogonal …

Massive machine-type communications (mMTC) is one of the three generic services for the
fifth-generation (5G) wireless communications system. To utilize fully the high rate …

Power-domain Non-Orthogonal Multiple Access (NOMA) and Ultra-Dense Network (UDN)
are promising candidates to cope with the massive access challenge of Machine-Type …

The level of deployment of 5G networks is increasing every day, making this cellular
technology become ubiquitous soon. Therefore, characterizing the channel quality and …