This paper considers the massive connectivity application in which a large number of
devices communicate with a base-station (BS) in a sporadic fashion. Device activity …

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 …

This two-part paper considers an uplink massive device communication scenario in which a
large number of devices are connected to a base station (BS), but user traffic is sporadic so …

This paper considers sparse device activity detection for cellular machine-type
communications with non-orthogonal signatures using the approximate message passing …

This paper considers the massive connectivity problem in an asynchronous grant-free
random access system, where a huge number of devices sporadically transmit data to a …

With the advent of the Internet of things, massive machine-type communications (mMTC)
have become one of the most important requirements for next generation communication …

Machine-to-Machine communication requires new physical layer concepts to meet future
requirements. In previous works it has already been shown that Compressive Sensing (CS) …

In this paper, we study the problem of activity detection (AD) in a massive MIMO setup,
where the Base Station (BS) has M≫ 1 antennas. We consider a block fading channel …

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 …

Grant-free random access is a promising protocol to support massive access in beyond fifth-
generation (B5G) cellular Internet-of-Things (IoT) with sporadic traffic. Specifically, in each …