Paper Info
Title
Status Update Performance in Uplink Massive MU-MIMO Short-packet Communication Systems
Abstract
Timely status updates are becoming more and more important in some future Internet of Things (IoT) applications, such as unmanned driving and intelligent home. In this paper, we investigate a multiuser multiple-input-multiple-output (MU- MIMO) short-packet communication system under perfect channel state information consisting of the next generation Node B (gNB) with multiple antennas and several users with a single antenna. We use the average age of information (AoI) as the performance parameter and the zero-forcing (ZF) detection to minimize the mutual interference. We analyze the status update process in the finite blocklength system and derive an approximated closed-expression of the average AoI. Monte Carlo simulation and numerical results verify that in the MU-MIMO system status update performance can be improved by increasing the transmit power and arranging multiple antennas, and show that there is an optimal packet blocklength which can lead to the best status update performance.
Year
DOI
Venue
2020
10.1109/WCSP49889.2020.9299796
2020 International Conference on Wireless Communications and Signal Processing (WCSP)
Keywords
DocType
ISSN
Massive MU-MIMO,short-packet communication,status update performance,average age of information
Conference
2325-3746
ISBN
Citations 
PageRank 
978-1-7281-7237-8
0
0.34
References 
Authors
10
3
Name
Order
Citations
PageRank
Zeyuan Zhu100.34
Baoquan Yu2283.19
Yueming Cai3161.97