This article considers the massive MIMO unsourced random access problem on a quasi-
static Rayleigh fading channel. Given a fixed message length and a prescribed number of …

This paper seeks to answer a simple but fundamental question: what role can non-
orthogonal multiple access (NOMA) play in massive multi-in multi-out (MIMO)? It is well …

In recent times, the rapid growth in mobile subscriptions and the associated demand for high
data rates fuels the need for a robust wireless network design to meet the required capacity …

Grant-free random access (RA) with massive MIMO is a promising RA technique that
provides significant benefits in increasing the channel reuse efficiency with low signaling …

Cell-free Massive MIMO systems consist of a large number of geographically distributed
access points (APs) that serve users by coherent joint transmission. Downlink power …

In this paper, we investigate the selection problem of access points (APs) in cell-free
massive multiple-input multiple-output (MIMO) systems, where APs equipped with a large …

Massive multiple-input multiple-output (MIMO) and nonorthogonal multiple access (NOMA)-
based technologies are considered as essential parts in the 5G systems to fulfill the …

Rate-splitting multiple access (RSMA) is promising to be developed as a key enabling
technology for 6G. This paper investigates the resource allocation problem in a downlink …

To enhance the spectral efficiency of non-orthogonal multiple access (NOMA) in massive
multiple input multiple output systems, we propose a user pairing and pair scheduling …

Massive machine-type communication (MTC) is expected to play a key role in supporting
Internet of Things (IoT) applications such as smart cities, smart factories, and connected …