This study addresses the challenge of high-power collision rates in grant-free nonorthogonal
random access (GF-NORA) for ultramassive machine-type communication (umMTC) in …

This article proposes a stochastic geometry-based analytical framework for the throughput of
the grant-free power-domain nonorthogonal multiple access (GF-NOMA) with user-specific …

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 …

In slotted random access systems, when multiple users transmit packets simultaneously,
owing to the successive interference cancellation (SIC) technique, the access point (AP) is …

The use of non-orthogonal multiple access (NOMA)-assisted ALOHA can effectively improve
the throughput of random access. In this letter, we study the throughput of NOMA-ALOHA for …

This paper proposes an analytical model for the throughput of the grant-free power-domain
non-orthogonal multiple access (called GF-NOMA) in the massive machine-type …

This article proposes a scalable framework to analyse the throughput of the grant-free power-
domain nonorthogonal multiple access (GF-NOMA) and presents the achievable …

The paradigm of the upcoming 5G and beyond is the machine type communications (MTC),
where a large number of devices automatically operate wireless communications. Due to …

To improve the throughput per channel in multichannel nonorthogonal multiple access
(NOMA) random access (RA) system, users (re) transmit their packet to one of the channels …

Traditional multiple access schemes, as well as more recent preamble-based schemes,
cannot achieve the extremely low latency, complexity, and collision probability required by …