Paper Info
Title
Satellite-Assisted Cell-Free Massive Mimo Systems With Multi-Group Multicast
Abstract
In this paper, we use satellite-assisted and multi-group multicast mechanisms to relieve ground traffic pressure and improve data transmission efficiency of cell-free massive MIMO systems. We propose to estimate channel state information (CSI) by common pilot scheme. Given the estimated CSI, we derive the closed-form expressions of achievable rate with maximum ratio transmission (MRT) and zero-forcing (ZF) precoding. The correctness of the closed-form expressions is verified through simulations. The results show that with the help of satellite and multicast, the average system spectrum efficiency (SE) can be significantly improved.
Year
DOI
Venue
2021
10.3390/s21186222
SENSORS
Keywords
DocType
Volume
satellite-assisted, cell-free massive MIMO, multi-group multicast
Journal
21
Issue
ISSN
Citations 
18
1424-8220
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Jiamin Li13915.79
Lingling Chen200.34
Pengcheng Zhu348753.11
Dongming Wang457159.66
xiaohu you52529272.49