Paper Info
Title
Two-Step User Selection Algorithm for Multi-User Massive MIMO with Hybrid Beamforming
Abstract
The fifth-generation (5G) mobile communication system will introduce the use of high frequency bands with wide bandwidth and Massive MIMO technology for realizing higher bit rate than 20 Gbps. One of practical ways to realize Massive MIMO in high frequency bands is hybrid beamforming (BF) that combines analog BF with digital precoding. In multi-user Massive MIMO system employing hybrid BF, user selection is an important function because its performance is highly affected by inter-user interference. However, the computational complexity of the user selection in multi-user Massive MIMO is high because a size of MIMO channel matrix is also large. Furthermore, satisfying user fairness by proportional fairness (PF) criteria leads to further increase of the complexity because re-calculation of precoding and postcoding matrices is required for each combination of selected users. To realize user-fair and lowcomplexity user selection algorithm for high SHF wideband multiuser Massive MIMO employing hybrid BF, this paper proposes a two-step user selection algorithm which is a combination of PF based user selection and chordal distance user selection. Results of computer simulations show that the proposed two-step user selection algorithm can achieve higher system performance than the conventional user selection algorithms do with higher user fairness and lower computational complexity.
Year
DOI
Venue
2019
10.1109/WPMC48795.2019.9096171
2019 22nd International Symposium on Wireless Personal Multimedia Communications (WPMC)
Keywords
DocType
ISSN
5G,High-SHF bands,Massive MIMO,Hybrid beamforming,User selection
Conference
1347-6890
ISBN
Citations 
PageRank 
978-1-7281-5420-6
0
0.34
References 
Authors
6
4
Name
Order
Citations
PageRank
Nobuhide Nonaka1104.99
Kazushi Muraoka2358.16
Satoshi Suyama319231.05
Yukihiko Okumura413633.89