Non-orthogonal multiple access (NOMA) is regarded as a promising technology in achieving
high capacity and massive connectivity. In this paper, the reliable transmission scheme of …

In this work, we present a joint channel estimation, activity detection and data decoding
scheme for massive machine-type communications. By including the channel and the a …

Grant-free non-coherent index-modulation (NC-IM) has been recently considered as an
efficient massive access scheme for enabling cost-and energy-limited Internet-of-Things …

In this paper, we design a novel two-phase unsourced random access (URA) scheme in
massive multiple input multiple output (MIMO). In the first phase, we collect a sequence of …

Over-the-air computation (OAC) is a promising technique to achieve fast model aggregation
across multiple devices in federated edge learning (FEEL). In addition to the analog …

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

Code-domain non-orthogonal multiple access (NOMA) is a promising technology to achieve
ubiquitous massive connections for 5G and beyond. In application scenarios with high …

This letter presents novel Expectation Propagation (EP) algorithms for Single User (SU) and
Multiple Users (MU) Multiple-Input Multiple-Output (MIMO) detection that address the …

The sixth-generation (6G) network is considered a promising enabler of the Internet of
Things (IoT), with potential applications spanning from terrestrial to non-terrestrial terminals …

Unsourced random access (URA) is a particular form of grant-free uncoordinated multiple
access wherein the users' identities are not associated to specific waveforms at the physical …