Enhancing Performance of Uplink URLLC Systems via Shared Diversity Transmissions and Multiple Antenna Processing

Radoslaw Kotaba, Carles Navarro Manchon, Petar Popovski

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

3 Citations (Scopus)
53 Downloads (Pure)

Abstract

In this work we investigate the reliability aspects of uplink multi-user MIMO communication over a preallocated pool of time-frequency resources shared by a group of ultra-reliable low-latency devices. To achieve sufficient diversity, users perform multiple transmissions of their packets over a shared pool of time-frequency resources in a non-orthogonal manner. The preallocation allows users to employ fast, grant-free type of access, while sharing improves the overall spectral efficiency. The multiple transmit opportunities enhance the robustness of communication through incremental redundancy. On the base station side, we consider the performance of a minimum mean square error (MMSE) receiver, chosen for its relative simplicity.
In addition to a baseline scheme in which devices randomly select the resources without coordination, we consider two other approaches based on preassigned access patterns: i) one in which all resources are utilized evenly and with equal power, and ii) another, where the spectrum is divided into high and low contention portions and users benefit from having few reliable transmissions and few diversity resources. In particular, we focus on evaluating the performance limits of the schemes as the number of antennas at the base station grows.
Original languageEnglish
Title of host publication2019 53rd Asilomar Conference on Signals, Systems, and Computers
EditorsMichael B. Matthews
Number of pages7
Place of PublicationPacific Grove, CA, USA
PublisherIEEE
Publication date30 Mar 2020
Pages1409-1415
Article number9049079
ISBN (Print)978-1-7281-4301-9
ISBN (Electronic)978-1-7281-4300-2
DOIs
Publication statusPublished - 30 Mar 2020
Event2019 53rd Asilomar Conference on Signals, Systems, and Computers - Pacific Grove, United States
Duration: 3 Nov 20196 Nov 2019

Conference

Conference2019 53rd Asilomar Conference on Signals, Systems, and Computers
Country/TerritoryUnited States
CityPacific Grove
Period03/11/201906/11/2019
SeriesAsilomar Conference on Signals, Systems and Computers. Conference Record
ISSN1058-6393

Fingerprint

Dive into the research topics of 'Enhancing Performance of Uplink URLLC Systems via Shared Diversity Transmissions and Multiple Antenna Processing'. Together they form a unique fingerprint.

Cite this