Title
Unveiling the Importance of SIC in NOMA Systems—Part 1: State of the Art and Recent Findings
Abstract
The key idea of non-orthogonal multiple access (NOMA) is to serve multiple users simultaneously at the same time and frequency, which can result in excessive multiple-access interference. As a crucial component of NOMA systems, successive interference cancelation (SIC) is key to combating this multiple-access interference, and is the focus of this letter, where an overview of SIC decoding order selection schemes is provided. In particular, selecting the SIC decoding order based on the users' channel state information (CSI) and the users' quality of service (QoS), respectively, is discussed. The limitations of these two approaches are illustrated, and then a recently proposed scheme, termed hybrid SIC, which dynamically adapts the SIC decoding order is presented and shown to achieve a surprising performance improvement that cannot be realized by the conventional SIC decoding order selection schemes individually.
Year
DOI
Venue
2020
10.1109/LCOMM.2020.3012604
IEEE Communications Letters
Keywords
DocType
Volume
Non-orthogonal multiple access (NOMA),hybrid successive interference cancellation (SIC),outage probability error floors
Journal
24
Issue
ISSN
Citations 
11
1089-7798
15
PageRank 
References 
Authors
0.61
0
3
Name
Order
Citations
PageRank
Zhiguo Ding17031399.47
Robert Schober28448488.41
H. V. Poor3254111951.66