4 citations · 7 across the 5 of their papers we have counts for
6 papers
Random Pilot and Data Access in Massive MIMO for Machine-type Communications
Elisabeth de Carvalho, Emil Björnson, Jesper H. Sørensen +2
A massive MIMO system, represented by a base station with hundreds of antennas, is capable of spatially multiplexing many devices and thus naturally suited to serve dense crowds of…
Coded Pilot Access: A Random Access Solution for Massive MIMO Systems
Jesper H. Sørensen, Elisabeth de Carvalho, Čedomir Stefanović +1
We present a novel access protocol for crowd scenarios in massive MIMO (Multiple-input multiple-output) systems. Crowd scenarios are characterized by a large number of users with i…
Massive MIMO for Crowd Scenarios: A Solution Based on Random Access
Jesper H. Sørensen, Elisabeth de Carvalho, Petar Popovski
This paper presents a new approach to intra-cell pilot contamination in crowded massive MIMO scenarios. The approach relies on two essential properties of a massive MIMO system, na…
Pilot Decontamination Through Pilot Sequence Hopping in Massive MIMO Systems
Jesper H. Sørensen, Elisabeth de Carvalho
This work concerns wireless cellular networks applying massive multiple-input multiple-output (MIMO) technology. In such a system, the base station in a given cell is equipped with…
Coded Splitting Tree Protocols
Jesper H. Sørensen, Cedomir Stefanović, Petar Popovski
This paper presents a novel approach to multiple access control called coded splitting tree protocol. The approach builds on the known tree splitting protocols, code structure and…
On the Role of Feedback in LT Codes
Jesper H. Sørensen, Petar Popovski, Jan Østergaard
This paper concerns application of feedback in LT codes. The considered type of feedback is acknowledgments, where information on which symbols have been decoded is given to the tr…