Massive machine-type communications (mMTC) is one of the main three focus areas in the
5th generation (5G) of wireless communications technologies to enable connectivity of a …

Abstract The Sixth-Generation (6G) standard for wireless communications is expected to
realize ubiquitous coverage for massive Internet of Things (IoT) networks by 2030. Satellite …

Driven by the need to ensure the connectivity of an unprecedentedly huge number of IoT
devices with no human intervention the issues of massive connectivity have recently …

In multiple measurement vectors (MMV) problems, the sparsity structure, ie, the support of
the measurement vectors, remains constant for multiple instants. For machine type …

In this paper, we introduce a comprehensive grant-free random access scheme for machine-
type communication which is characterized by massive connectivity and low latency. The …

In sparse code multiple access (SCMA)-based grant-free (GF) access, both user's channel
and the selected SCMA codebook (CB) are considered as a transmission signature for multi …

Observing that employing a single codebook (CB) per user transmission block in the
conventional CB-based non-orthogonal multiple access (NOMA) schemes doesn't exploit …

One objective of the 5G communication system and beyond is to support massive machine
type of communication (mMTC) to propel the fast growth of diverse Internet of Things use …

The performance of grant-free random access (GF-RA) is limited by the number of
accessible random access resources (RRs) due to the absence of collision resolution …

Compressed sensing-based multiuser detection (CSMUD) is a promising candidate to
enable grant-free non-orthogonal multiple access for massive machine-type communication …