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- Title
Overview of Sparse Graph for Multiple Access in Future Mobile Networks.
- Authors
Jing Lei; Baoguo Li; Erbao Li; Zhenghui Gong
- Abstract
Multiple access via sparse graph, such as low density signature (LDS) and sparse code multiple access (SCMA), is a promising technique for future wireless communications. This survey presents an overview of the developments in this burgeoning field, including transmitter structures, extrinsic information transform (EXIT) chart analysis and comparisons with existing multiple access techniques. Such technique enables multiple access under overloaded conditions to achieve a satisfactory performance. Message passing algorithm is utilized for multi-user detection in the receiver, and structures of the sparse graph are illustrated in detail. Outlooks and challenges of this technique are also presented.
- Subjects
SPARSE graphs; TELECOMMUNICATION systems; WIRELESS communications; DATA transmission systems; ALGORITHMS
- Publication
Frequenz, 2017, Vol 71, Issue 11/12, p601
- ISSN
0016-1136
- Publication type
Article
- DOI
10.1515/freq-2016-0019