Mathematical optimization is now widely regarded as an indispensable modeling and
solution tool for the design of wireless communications systems. While optimization has …

Compared to the generations up to 4G, whose main focus was on broadband and coverage
aspects, 5G has expanded the scope of wireless cellular systems toward embracing two …

We consider unsourced random access (uRA) in a cell-free (CF) user-centric wireless
network, where a large number of potential users compete for a random access slot, while …

This paper studies the device activity detection problem in a massive multiple-input multiple-
output (MIMO) system for near-field communications (NFC). In this system, active devices …

Detecting active users in a non-orthogonal multiple access (NOMA) network poses a
significant challenge for 5G/6G applications. Traditional algorithms tackling this task, relying …

This paper revisits the identity detection problem under the current grant-free protocol in
massive machine-type communications (mMTC) by asking the following question: for stable …

Covariance-Based Activity Detection in Cooperative Multi-Cell Massive MIMO: Scaling Law
and Efficient Algorithms Page 1 Covariance-Based Activity Detection in Cooperative Multi-Cell …