In this letter, a non-orthogonal multiple access (NOMA) scheme is employed for irregular
repetition slotted ALOHA (IRSA). Specifically, packet replicas are transmitted with discrete …

In this paper, the problem of using uncoordinated multiple access (UMA) to serve a massive
amount of heterogeneous users is investigated. Leveraging the heterogeneity, we propose a …

In this paper, we consider an asynchronous random access scheme called irregular
repetition ALOHA (IRA) as a generalization of contention resolution ALOHA (CRA) with …

In this paper, we review the key figures of merit to assess the performance of advanced
random access (RA) schemes exploiting physical layer coding, repetitions, and collision …

We analyze the performance of Coded Slotted ALOHA (CSA) protocols in scenarios where
users are equipped with limited batteries that are recharged through Energy Harvesting …

Contention resolution diversity slotted ALOHA (CRDSA) is a promising solution to meet the
challenge of designing efficient random access in future wireless networks. In this paper, we …

In this paper, we study a joint user pairing and power allocation problem in the 5th
generation (5G) satellite random access (RA) networks, where some user equipments (UEs) …

We address the problem of uncoordinated massive random-access in the Gaussian multiple
access channel (MAC). The performance of low-complexity T-fold irregular repetition slotted …

There is an urgent demand for massive machine-type terminals to have access into time-
division multiple access (TDMA)-based satellite networks by means of random multiple …

This paper addresses a fundamental limitation of previous random access protocols, their
lack of latency performance guarantees. We consider K IoT transmitters competing for uplink …