Massive access, also known as massive connectivity or massive machine-type
communication (mMTC), is one of the main use cases of the fifth-generation (5G) and …

This paper considers massive access in massive multiple-input multiple-output (MIMO)
systems and proposes an adaptive active user detection and channel estimation scheme …

This article studies massive access in cell-free massive multi-input multi-output (MIMO)-
based Internet of Things and solves the challenging active user detection (AUD) and …

The upcoming fifth generation (5G) cellular network is required to provide seamless access
for a massive number of Internet of Things (IoT) devices over the limited radio spectrum. In …

For massive machine-type communications, centralized control may incur a prohibitively
high overhead. Grant-free non-orthogonal multiple access (NOMA) provides possible …

In this article, we investigate jointly sparse signal recovery and jointly sparse support
recovery in Multiple Measurement Vector (MMV) models for complex signals, which arise in …

We discuss the problem of designing channel access architectures for enabling fast, low-
latency, grant-free, and uncoordinated uplink for densely packed wireless nodes …

This paper investigatesthe issue of cooperative activity detection for grant-free random
access in the sixth-generation (6G) cell-free wireless networks with sourced and unsourced …

We address the joint device activity detection and channel estimation (JACE) problem in a
massive MIMO connectivity scenario in which a large number of mobile devices are …

Driven by an increasing number of mobile applications, mobile edge computing (MEC) has
been considered as a promising candidate to support the huge amount of data processing …